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Gerald A Weiss, MD

Anatomic Pathology & Clinical Pathology · San Jose

NPI 1023003423

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
1
1 carrier
Office
1

Offices

1 location

Plans that list them

1 plan · 1 carrier

A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Weiss’s office at (408) 866-4060 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.

Plans whose provider directory lists this clinician
DualConnect (HMO D-SNP)Santa Clara Family Health PlanListedSep 1, 2026

California Medical Board record

Licence G37092 · Current

Licensed to practise in California · since 1978 · expires 2027-11-30 · University of Alberta Faculty of Medicine.

No disciplinary actions, convictions, malpractice judgments or citations in this record.

Original Medicare doctor bills

$550

Medicare paid this office $550 for 19 people.

This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.

Largest Original Medicare bills
Blood smear interpretation by physician with written report15$254$17

Who their Medicare patients are

19 Original Medicare patients in 2024. Average age 80 · Health risk score 3.60. Sicker patients than 9 in 10 peers; the typical pathology clinician is at 1.55.

Conditions among them: High blood pressure 75% · Diabetes 75% · Chronic kidney disease 58%.

The office billed $3,102, Medicare allowed $771 and paid $550; for 27 services of 6 kinds.

Original Medicare patients only. A risk score of 1.0 is the average Medicare patient; higher means sicker. Any count under 11 is hidden.

Year by year

Original Medicare by year
20241927803.60$3,102$550
2023389805772.54$140,133$34,396
20225351,169762.45$210,555$55,765
20215131,130762.89$194,914$46,637
20206051,464752.69$271,965$67,228
20196991,656752.69$297,013$68,571
20186611,802752.97$338,100$71,588
20177982,089752.86$381,253$79,831
20167532,036752.68$382,820$88,229
20156211,696753.00$293,854$54,118
20144301,108742.20$213,279$44,948
2013328863742.10$166,471$38,494

Original Medicare only. A service billed for fewer than 11 people in a year is hidden, so the lines can add up to less than the year's total.

See the services billed each year

2023: 11 services

Original Medicare services billed in 2023
Pathology examination of tissue using a microscope, intermediate complexity66$8,470$71
Blood smear interpretation by physician with written report212$6,242$21
Microscopic genetic analysis of tumor, manual16$3,602$124
Pathology examination of tissue using a microscope, intermediate complexity48$2,106$33
Special stained specimen slides to examine tissue, initial procedure16$1,716$101
Cell examination of specimen, concentration technique53$1,471$20
Special stained specimen slides to identify organisms including interpretation and report11$1,444$120
Cell examination of specimen, selective cellular enhancement technique12$832$69
Special stained specimen slides to examine tissue, initial procedure17$603$32
Coagulation function screening test with interpretation and report17$593$33
Preparation of tissue for examination by removing any calcium present11$124$11

2022: 14 services

Original Medicare services billed in 2022
Pathology examination of tissue using a microscope, intermediate complexity107$12,800$70
Blood smear interpretation by physician with written report265$9,452$22
Microscopic genetic analysis of tumor, manual36$6,963$127
Pathology examination of tissue using a microscope, intermediate complexity63$3,254$35
Special stained specimen slides to examine tissue, initial procedure20$2,429$106
Cell examination of specimen, selective cellular enhancement technique29$2,129$69
Special stained specimen slides to identify organisms including interpretation and report13$1,681$112
Cell examination of specimen, concentration technique53$1,292$21
Special stained specimen slides to examine tissue, initial procedure26$866$32
Special stained specimen slides to examine tissue, each additional procedure12$856$26
Coagulation function screening test with interpretation and report15$543$34
Special stained specimen slides to identify organisms including interpretation and report14$459$24
Preparation of tissue for examination by removing any calcium present16$206$11
Pathology examination of tissue using a microscope, moderately low complexity16$189$11

2021: 12 services

Original Medicare services billed in 2021
Pathology examination of tissue using a microscope, intermediate complexity71$10,518$71
Blood smear interpretation by physician with written report302$9,689$23
Pathology examination of tissue using a microscope, intermediate complexity69$3,830$36
Special stained specimen slides to examine tissue, initial procedure21$3,664$111
Microscopic genetic analysis of tumor, manual14$2,089$131
Special stained specimen slides to identify organisms including interpretation and report13$2,025$119
Cell examination of specimen, concentration technique63$1,938$22
Special stained specimen slides to examine tissue, each additional procedure13$1,903$27
Coagulation function screening test with interpretation and report25$1,294$34
Special stained specimen slides to examine tissue, initial procedure31$1,138$33
Special stained specimen slides to identify organisms including interpretation and report16$584$25
Pathology examination of tissue using a microscope, moderately low complexity12$151$11

2020: 13 services

Original Medicare services billed in 2020
Pathology examination of tissue using a microscope, intermediate complexity120$16,898$70
Blood smear interpretation by physician with written report268$9,159$23
Special stained specimen slides to examine tissue, initial procedure66$7,766$109
Pathology examination of tissue using a microscope, intermediate complexity78$4,365$36
Special stained specimen slides to examine tissue, each additional procedure30$4,229$27
Cell examination of specimen, selective cellular enhancement technique39$2,879$69
Coagulation function screening test with interpretation and report70$2,720$34
Special stained specimen slides to identify organisms including interpretation and report15$1,992$111
Cell examination of specimen, concentration technique65$1,805$21
Special stained specimen slides to examine tissue, initial procedure47$1,752$34
Pathology examination of tissue using a microscope, moderately high complexity17$1,650$75
Special stained specimen slides to identify organisms including interpretation and report18$616$26
Pathology examination of tissue using a microscope, moderately low complexity13$141$11

2019: 17 services

Original Medicare services billed in 2019
Pathology examination of tissue using a microscope, intermediate complexity120$15,029$66
Blood smear interpretation by physician with written report334$10,714$22
Pathology examination of tissue using a microscope, intermediate complexity115$6,487$36
Special stained specimen slides to examine tissue, initial procedure44$5,735$106
Special stained specimen slides to examine tissue, each additional procedure12$4,185$87
Special stained specimen slides to identify organisms including interpretation and report26$3,504$103
Special stained specimen slides to examine tissue, each additional procedure22$3,103$27
Cell examination of specimen, concentration technique105$2,938$21
Coagulation function screening test with interpretation and report37$1,725$34
Special stained specimen slides to examine tissue, initial procedure40$1,576$34
Pathology examination of tissue using a microscope, moderately high complexity15$1,501$79
Cell examination of specimen, selective cellular enhancement technique16$1,358$68
Special stained specimen slides to identify organisms including interpretation and report26$953$25
Pathology examination of tissue using a microscope, moderately low complexity16$704$41
Preparation of tissue for examination by removing any calcium present26$327$12
Pathology examination of tissue using a microscope, moderately low complexity26$299$11
Special stained specimen slides to examine tissue including interpretation and report13$248$11

2018: 16 services

Original Medicare services billed in 2018
Pathology examination of tissue using a microscope, intermediate complexity120$13,519$67
Blood smear interpretation by physician with written report337$10,695$23
Special stained specimen slides to examine tissue, each additional procedure49$6,819$27
Pathology examination of tissue using a microscope, intermediate complexity116$6,808$36
Special stained specimen slides to examine tissue, each additional procedure13$5,565$96
Special stained specimen slides to identify organisms including interpretation and report33$3,780$97
Special stained specimen slides to examine tissue, initial procedure23$2,953$109
Cell examination of specimen, concentration technique93$2,913$21
Special stained specimen slides to examine tissue, initial procedure69$2,911$34
Pathology examination of tissue using a microscope, moderately high complexity24$2,480$80
Special stained specimen slides to identify organisms including interpretation and report35$1,219$25
Coagulation function screening test with interpretation and report38$805$16
Microscopic genetic analysis of tumor, manual11$639$43
Preparation of tissue for examination by removing any calcium present29$373$12
Pathology examination of tissue using a microscope, moderately low complexity25$298$11
Special stained specimen slides to examine tissue including interpretation and report14$259$11

2017: 17 services

Original Medicare services billed in 2017
Pathology examination of tissue using a microscope, intermediate complexity138$16,567$67
Blood smear interpretation by physician with written report404$13,448$23
Pathology examination of tissue using a microscope, intermediate complexity148$7,719$36
Special stained specimen slides to examine tissue, each additional procedure53$6,642$27
Special stained specimen slides to identify organisms including interpretation and report51$6,067$101
Cell examination of specimen, concentration technique120$4,373$21
Pathology examination of tissue using a microscope, moderately high complexity25$2,968$80
Special stained specimen slides to examine tissue, initial procedure65$2,635$34
Special stained specimen slides to examine tissue, initial procedure16$1,740$109
Special stained specimen slides to examine tissue including interpretation and report18$1,524$73
Special stained specimen slides to identify organisms including interpretation and report39$1,338$26
Coagulation function screening test with interpretation and report54$1,222$17
Pathology examination of tissue using a microscope, moderately low complexity13$640$40
Preparation of tissue for examination by removing any calcium present27$384$12
Pathology examination of tissue using a microscope, moderately low complexity25$298$11
Special stained specimen slides to examine tissue including interpretation and report17$259$11
Pathology examination of tissue using a microscope11$74$7

2016: 21 services

Original Medicare services billed in 2016
Pathology examination of tissue using a microscope, intermediate complexity159$17,504$72
Blood smear interpretation by physician with written report400$13,534$23
Special stained specimen slides to identify organisms including interpretation and report73$8,392$100
Special stained specimen slides to examine tissue, each additional procedure13$6,382$91
Special stained specimen slides to examine tissue, each additional procedure41$5,879$25
Pathology examination of tissue using a microscope, intermediate complexity93$5,344$36
Special stained specimen slides to examine tissue including interpretation and report63$4,667$71
Pathology examination of tissue using a microscope, moderately high complexity33$3,345$80
Special stained specimen slides to examine tissue, initial procedure18$2,043$108
Special stained specimen slides to examine tissue, initial procedure49$2,033$33
Microscopic genetic analysis of tumor, manual14$1,797$120
Cell examination of specimen, concentration technique69$1,748$21
Cell examination of body fluid, smears25$1,248$27
Special stained specimen slides to identify organisms including interpretation and report23$848$26
Coagulation function screening test with interpretation and report32$652$17
Pathology examination of tissue using a microscope, moderately low complexity11$560$47
Screening examination of specimen cells, screening and interpretation15$454$23
Special stained specimen slides to examine tissue including interpretation and report16$359$11
Pathology examination of tissue using a microscope, moderately low complexity27$329$11
Cell examination of specimen, selective cellular enhancement technique11$320$25
Preparation of tissue for examination by removing any calcium present21$300$12

2015: 17 services

Original Medicare services billed in 2015
Blood smear interpretation by physician with written report378$11,843$23
Pathology examination of tissue using a microscope, intermediate complexity110$5,966$36
Special stained specimen slides to examine tissue, each additional procedure55$5,829$20
Special stained specimen slides to examine tissue, each additional procedure13$5,010$66
Pathology examination of tissue using a microscope, moderately high complexity26$3,304$79
Special stained specimen slides to examine tissue, initial procedure69$2,657$33
Pathology examination of tissue using a microscope, intermediate complexity25$2,032$60
Special stained specimen slides to examine tissue, initial procedure15$1,653$87
Cell examination of specimen, selective cellular enhancement technique39$1,251$25
Special stained specimen slides to identify organisms including interpretation and report22$987$25
Coagulation function screening test with interpretation and report44$943$17
Cell examination of body fluid, smears24$894$27
Cell examination of specimen, concentration technique31$856$21
Pathology examination of tissue using a microscope, moderately low complexity42$499$11
Preparation of tissue for examination by removing any calcium present24$336$12
Special stained specimen slides to examine tissue including interpretation and report15$292$11
Pathology examination of tissue using a microscope13$89$6

2014: 15 services

Original Medicare services billed in 2014
Pathology examination of tissue using a microscope, intermediate complexity67$6,313$58
Pathology examination of tissue using a microscope, intermediate complexity98$5,472$35
Blood smear interpretation by physician with written report160$4,992$22
Immunohistochemistry or immunocytochemistry, per specimen; each additional single or multiplex antibody stain (list separately in addition to code for primary procedure)29$4,948$65
Immunohistochemistry or immunocytochemistry, per specimen; first single or multiplex antibody stain37$4,856$80
Pathology examination of tissue using a microscope, moderately high complexity21$1,825$76
Immunohistochemistry or immunocytochemistry, per specimen; first single or multiplex antibody stain42$1,488$28
Immunohistochemistry or immunocytochemistry, per specimen; each additional single or multiplex antibody stain (list separately in addition to code for primary procedure)24$1,031$11
Cell examination of specimen, selective cellular enhancement technique21$713$25
Special stained specimen slides to identify organisms including interpretation and report12$646$25
Cell examination of body fluid, smears13$479$27
Pathology examination of tissue using a microscope, moderately low complexity37$439$10
Coagulation function screening test with interpretation and report22$406$17
Special stained specimen slides to examine tissue including interpretation and report15$303$11
Preparation of tissue for examination by removing any calcium present14$168$11

2013: 11 services

Original Medicare services billed in 2013
Special stained specimen slides to examine tissue, initial procedure64$7,534$38
Special stained specimen slides to examine tissue, initial procedure35$7,383$93
Pathology examination of tissue using a microscope, intermediate complexity117$5,692$33
Pathology examination of tissue using a microscope, intermediate complexity59$4,548$55
Pathology examination of tissue using a microscope, moderately high complexity28$2,684$75
Cell examination of specimen, selective cellular enhancement technique32$2,150$52
Blood smear interpretation by physician with written report60$1,384$22
Special stained specimen slides to identify organisms including interpretation and report12$480$24
Special stained specimen slides to examine tissue including interpretation and report20$363$11
Pathology examination of tissue using a microscope, moderately low complexity22$232$10
Preparation of tissue for examination by removing any calcium present11$121$11

Medicaid work

$742 in 2024

Medicaid paid $742 for 1,673 billed services this clinician did in 2024, up to 218 people in a month for one service.

Medicaid and CHIP claims where this clinician did the service, fee-for-service and managed care together. Any month with fewer than 11 patients is hidden, so small Medicaid practices undercount.

Largest Medicaid services in 2024
Blood smear, peripheral, interpretation by physician with written report40$196
COMPREHENSIVE METABOLIC PANEL228$113
Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count)364$112
Basic metabolic panel (Calcium, total) This panel must include the following: Calcium, total (82310) Carbon dioxide (bicarbonate) (82374) Chloride (82435) Creatinine (82565) Glucose (82947) Potassium (84132) Sodium (84295) Urea nitrogen (BUN) (84520)92$50
Troponin, quantitative82$37
Measurement of magnesium87$34
Infectious agent antigen detection by immunoassay technique (eg, enzyme immunoassay [EIA], enzyme-linked immunosorbent assay [ELISA], fluorescence immunoassay [FIA], immunochemiluminometric assay [IMCA]), qualitative or semiquantitative; Influenza, A or B, each145$27
Infectious agent detection by nucleic acid (DNA or RNA); Streptococcus, group A, amplified probe technique55$25
Gonadotropin, chorionic (hCG); quantitative20$24
Natriuretic peptide (heart and blood vessel protein) level13$22
ASSAY OF LIPASE99$21
Lactate (lactic acid)33$12
Medicaid work by year
20241,67324218$742
202378,84366861$41,758
202265,16467679$34,756
202187,57171787$69,439
202061,51574619$44,902
201968,28668859$43,021
201894,41076885$70,491
See the largest Medicaid services in earlier years

2023

Largest Medicaid services in 2023
COMPREHENSIVE METABOLIC PANEL10,511$6,279
Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count)13,909$5,462
Blood smear, peripheral, interpretation by physician with written report674$3,251
Troponin, quantitative3,833$2,562
ASSAY OF LIPASE5,154$1,930
Measurement of magnesium4,228$1,893
Basic metabolic panel (Calcium, total) This panel must include the following: Calcium, total (82310) Carbon dioxide (bicarbonate) (82374) Chloride (82435) Creatinine (82565) Glucose (82947) Potassium (84132) Sodium (84295) Urea nitrogen (BUN) (84520)3,415$1,824
Infectious agent detection by nucleic acid (DNA or RNA); Streptococcus, group A, amplified probe technique1,528$1,697
Natriuretic peptide (heart and blood vessel protein) level1,177$1,533
Infectious agent antigen detection by immunoassay technique (eg, enzyme immunoassay [EIA], enzyme-linked immunosorbent assay [ELISA], fluorescence immunoassay [FIA], immunochemiluminometric assay [IMCA]), qualitative or semiquantitative; Influenza, A or B, each3,383$1,500
BLOOD CULTURE FOR BACTERIA1,416$1,420
THROMBOPLASTIN TIME PARTIAL2,917$1,100

2022

Largest Medicaid services in 2022
COMPREHENSIVE METABOLIC PANEL8,772$5,248
Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count)11,963$4,828
Blood smear, peripheral, interpretation by physician with written report795$3,588
Basic metabolic panel (Calcium, total) This panel must include the following: Calcium, total (82310) Carbon dioxide (bicarbonate) (82374) Chloride (82435) Creatinine (82565) Glucose (82947) Potassium (84132) Sodium (84295) Urea nitrogen (BUN) (84520)3,230$2,001
Troponin, quantitative2,926$1,885
Measurement of magnesium3,348$1,616
Natriuretic peptide (heart and blood vessel protein) level952$1,577
BLOOD CULTURE FOR BACTERIA1,233$1,471
ASSAY OF LIPASE4,030$1,414
THROMBOPLASTIN TIME PARTIAL2,253$881
Lactate (lactic acid)1,099$752
Thyroid stimulating hormone (TSH)723$666

2021

Largest Medicaid services in 2021
COMPREHENSIVE METABOLIC PANEL13,202$12,933
Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count)17,418$10,801
ASSAY OF LIPASE6,337$3,785
Measurement of magnesium5,077$3,723
Basic metabolic panel (Calcium, total) This panel must include the following: Calcium, total (82310) Carbon dioxide (bicarbonate) (82374) Chloride (82435) Creatinine (82565) Glucose (82947) Potassium (84132) Sodium (84295) Urea nitrogen (BUN) (84520)4,385$3,706
Troponin, quantitative4,111$3,545
Blood smear, peripheral, interpretation by physician with written report701$3,230
BLOOD CULTURE FOR BACTERIA1,855$3,194
Natriuretic peptide (heart and blood vessel protein) level1,082$2,717
THROMBOPLASTIN TIME PARTIAL3,069$1,958
Thyroid stimulating hormone (TSH)946$1,585
Lactate (lactic acid)1,526$1,533

2020

Largest Medicaid services in 2020
COMPREHENSIVE METABOLIC PANEL8,227$7,254
Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count)10,785$5,567
Measurement of magnesium4,630$3,605
Blood smear, peripheral, interpretation by physician with written report638$3,084
Basic metabolic panel (Calcium, total) This panel must include the following: Calcium, total (82310) Carbon dioxide (bicarbonate) (82374) Chloride (82435) Creatinine (82565) Glucose (82947) Potassium (84132) Sodium (84295) Urea nitrogen (BUN) (84520)3,738$2,719
THROMBOPLASTIN TIME PARTIAL2,450$1,828
Troponin, quantitative2,688$1,703
BLOOD CULTURE FOR BACTERIA1,213$1,606
Natriuretic peptide (heart and blood vessel protein) level799$1,494
ASSAY OF LIPASE3,192$1,433
Measurement of vancomycin652$980
Lactate (lactic acid)1,421$945

2019

Largest Medicaid services in 2019
Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count)12,850$5,490
COMPREHENSIVE METABOLIC PANEL6,890$4,537
Blood smear, peripheral, interpretation by physician with written report752$3,272
Measurement of magnesium4,609$3,146
Basic metabolic panel (Calcium, total) This panel must include the following: Calcium, total (82310) Carbon dioxide (bicarbonate) (82374) Chloride (82435) Creatinine (82565) Glucose (82947) Potassium (84132) Sodium (84295) Urea nitrogen (BUN) (84520)3,891$2,056
Troponin, quantitative3,264$2,039
ASSAY OF LIPASE4,101$1,670
BLOOD CULTURE FOR BACTERIA1,298$1,482
Natriuretic peptide (heart and blood vessel protein) level765$1,268
THROMBOPLASTIN TIME PARTIAL1,785$1,181
Lactate (lactic acid)1,636$1,128
TISSUE EXAM BY PATHOLOGIST235$1,088

2018

Largest Medicaid services in 2018
Blood count; complete (CBC), automated (Hgb, Hct, RBC, WBC and platelet count)16,957$10,066
COMPREHENSIVE METABOLIC PANEL6,414$5,866
Blood smear, peripheral, interpretation by physician with written report893$4,849
Basic metabolic panel (Calcium, total) This panel must include the following: Calcium, total (82310) Carbon dioxide (bicarbonate) (82374) Chloride (82435) Creatinine (82565) Glucose (82947) Potassium (84132) Sodium (84295) Urea nitrogen (BUN) (84520)4,888$3,950
Basic metabolic panel (Calcium, ionized) This panel must include the following: Calcium, ionized (82330) Carbon dioxide (bicarbonate) (82374) Chloride (82435) Creatinine (82565) Glucose (82947) Potassium (84132) Sodium (84295) Urea Nitrogen (BUN) (84520)4,894$3,666
ASSAY OF LIPASE5,928$3,451
Troponin, quantitative4,263$3,336
Measurement of magnesium4,483$2,908
BLOOD CULTURE FOR BACTERIA1,580$2,601
Natriuretic peptide (heart and blood vessel protein) level936$2,169
TISSUE EXAM BY PATHOLOGIST261$2,045
Culture, bacterial; quantitative colony count, urine2,855$1,990

Money from drug and device companies

$55 in 2021

A payment is not proof that care is biased.

Payments by company
AstraZeneca Pharmaceuticals LPNone$55
1 payment
  • Meals · 2021-09-22 · $55
See the published payment
Every published payment
AstraZeneca Pharmaceuticals LPMeals · 2021-09-22None$55

Checkups this office reported

Medicare did not publish checkup rates for this clinician.

Medicare’s overall office score
94.9 / 100
Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.

Professional record

NPI
1023003423
Licence
CA G37092California G37092: Current · expires 2027-11-30
More record details
Sole proprietor
No
Taxonomy
Federal specialty code 207ZP0102X (207ZP0102X)
Mailing address
225 N Jackson Ave, Attn: Gerald Weiss, MD, San Jose, CA, 95116
NPI first listed
2005-09-13
NPI last updated
2014-05-29

This is when the NPI record was last certified, not a medical board exam.