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Chao Sun, MD

General Practice · Pleasanton

NPI 1013118884

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
Not verified
Not the same as out of network.
Offices
2

Offices

2 locations

Looking this up.

Plan participation

Not verified

We could not verify current plan participation for this doctor. This does not mean they are out of network. Call Dr. Sun’s office at (925) 915-9530 to ask if they take your plan before you enroll.

California Medical Board record

Licence A101860 · Current

Licensed to practise in California · since 2007 · expires 2027-07-31 · Guangdong Medical College.

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

Original Medicare doctor bills

$179,835

Medicare paid this office $179,835 for 107 people.

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

Largest Original Medicare bills
Return visit (30+ min)99$136,444$109
Osteopathic manipulative treatment, 9-10 body regions35$41,747$73
New patient visit (45+ min)13$1,067$82

Who their Medicare patients are

107 Original Medicare patients in 2024. Average age 76 · Women 61% · Also on Medicaid 79% · Health risk score 0.87. At or below the middle of the specialty; the typical general practice clinician is at 1.33.

Conditions among them: High blood pressure 68% · Diabetes 30% · Chronic kidney disease 13%.

The office billed $251,685, Medicare allowed $239,640 and paid $179,835; for 1,849 services of 9 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
20241071,849760.87$251,685$179,835
20231161,910740.80$262,670$189,083
20221211,351740.75$194,685$138,680
20211281,654730.76$237,040$171,827
20201501,562720.81$221,835$134,982
20191702,221730.85$297,035$179,427
20181462,016720.89$271,610$160,980
20171421,807710.90$292,505$116,833
20161501,770721.04$306,625$120,260
20151201,036720.92$176,015$70,934
201454432730.85$69,035$28,909
201352179700.86$36,870$17,640

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: 3 services

Original Medicare services billed in 2023
Return visit (30+ min)107$150,384$109
Osteopathic manipulative treatment, 9-10 body regions37$35,877$73
New patient visit (45+ min)22$2,435$111

2022: 3 services

Original Medicare services billed in 2022
Return visit (30+ min)109$123,036$107
Osteopathic manipulative treatment, 9-10 body regions14$12,301$74
New patient visit (45+ min)17$2,031$119

2021: 4 services

Original Medicare services billed in 2021
Return visit (30+ min)124$151,044$108
Osteopathic manipulative treatment, 9-10 body regions14$14,760$76
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit25$2,850$114
New patient visit (45+ min)13$1,309$101

2020: 5 services

Original Medicare services billed in 2020
Return visit (30+ min)145$117,445$90
Osteopathic manipulative treatment, 9-10 body regions22$8,128$72
Short return visit (20+ min)42$4,239$57
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit28$3,093$110
New patient visit (45+ min)15$1,375$92

2019: 7 services

Original Medicare services billed in 2019
Return visit (30+ min)148$123,566$86
Osteopathic manipulative treatment, 9-10 body regions38$42,924$72
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit39$4,036$103
New patient visit (45+ min)34$4,011$118
Detection test by immunoassay with direct visual observation for influenza virus11$422$16
Influenza vaccine, quadrivalent, 0.5 ml dosage14$245$17
Detection test by immunoassay with direct visual observation for streptococcus, group a (strep)12$227$16

2018: 6 services

Original Medicare services billed in 2018
Return visit (30+ min)130$106,002$85
Osteopathic manipulative treatment, 9-10 body regions48$42,793$71
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit43$4,589$107
New patient visit (45+ min)27$3,083$114
Detection test by immunoassay with direct visual observation for influenza virus15$519$16
Detection test by immunoassay with direct visual observation for streptococcus, group a (strep)15$259$16

2017: 8 services

Original Medicare services billed in 2017
Return visit (30+ min)117$86,017$83
Osteopathic manipulative treatment, 3-4 body regions42$20,414$37
New patient visit (45+ min)42$4,629$110
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit13$1,373$106
Detection test by immunoassay with direct visual observation for influenza virus16$487$12
Influenza vaccine, quadrivalent, 0.5 ml dosage19$332$17
Detection test by immunoassay with direct visual observation for streptococcus, group a (strep)16$250$12
Administration and interpretation of patient-focused health risk assessment12$38$3

2016: 3 services

Original Medicare services billed in 2016
Return visit (30+ min)123$92,488$83
Osteopathic manipulative treatment, 3-4 body regions44$18,779$37
New patient visit (45+ min)44$5,331$121

2015: 6 services

Original Medicare services billed in 2015
Return visit (30+ min)79$47,535$85
Osteopathic manipulative treatment, 3-4 body regions31$10,914$37
New patient visit (45+ min)63$6,915$110
New patient visit (60+ min)15$2,278$152
Detection test by immunoassay with direct visual observation for influenza virus14$421$12
Influenza vaccine, trivalent, split virus, preservative-free, 0.5 ml dosage17$260$14

2014: 7 services

Original Medicare services billed in 2014
Return visit (30+ min)33$13,990$89
Osteopathic manipulative treatment, 3-4 body regions15$4,502$38
New patient visit (45+ min)24$2,925$122
Long return visit (40+ min)12$2,542$111
New patient visit (60+ min)17$2,326$137
Detection test by immunoassay with direct visual observation for influenza virus12$397$12
Detection test by immunoassay with direct visual observation for streptococcus, group a (strep)12$199$12

2013: 4 services

Original Medicare services billed in 2013
New patient visit (60+ min)37$5,823$157
Return visit (30+ min)14$3,667$87
Long return visit (40+ min)12$3,118$115
New patient visit (45+ min)13$1,798$138

Medicaid work

$225 in 2024

Medicaid paid $225 for 15 billed services this clinician did in 2024, up to 12 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
Return visit (30+ min)15$225
Medicaid work by year
202415112$225
202318118$300
202214114$188
20202,6665189$104,042
20194,16812212$178,331
20185,28412223$212,409
See the largest Medicaid services in earlier years

2023

Largest Medicaid services in 2023
Return visit (30+ min)18$300

2022

Largest Medicaid services in 2022
Return visit (30+ min)14$188

2020

Largest Medicaid services in 2020
Return visit (30+ min)1,877$79,739
Short return visit (20+ min)686$20,279
Diabetes outpatient self-management training services, individual, per 30 minutes46$2,143
Telephone evaluation and management service by a physician or other qualified health care professional who may report evaluation and management services provided to an established patient, parent, or guardian not originating from a related E/M service provided within the previous 7 days nor leading to an E/M service or procedure within the next 24 hours or soonest available appointment; 11-20 minutes of medical discussion44$1,320
Periodic comprehensive preventive medicine reevaluation and management of an individual including an age and gender appropriate history, examination, counseling/anticipatory guidance/risk factor reduction interventions, and the ordering of laboratory/diagnostic procedures, established patient; 40-64 years13$562

2019

Largest Medicaid services in 2019
Return visit (30+ min)3,358$147,334
Diabetes outpatient self-management training services, individual, per 30 minutes325$15,120
Periodic comprehensive preventive medicine reevaluation and management of an individual including an age and gender appropriate history, examination, counseling/anticipatory guidance/risk factor reduction interventions, and the ordering of laboratory/diagnostic procedures, established patient; 65 years and older108$4,925
Periodic comprehensive preventive medicine reevaluation and management of an individual including an age and gender appropriate history, examination, counseling/anticipatory guidance/risk factor reduction interventions, and the ordering of laboratory/diagnostic procedures, established patient; 40-64 years96$4,207
New patient visit (45+ min)45$3,758
Spirometry, including graphic record, total and timed vital capacity, expiratory flow rate measurement(s), with or without maximal voluntary ventilation42$1,272
Influenza virus vaccine, quadrivalent (IIV4), split virus, 0.5 mL dosage, for intramuscular use35$918
Immunization administration (includes percutaneous, intradermal, subcutaneous, or intramuscular injections); 1 vaccine (single or combination vaccine/toxoid)79$426
Infectious agent antigen detection by immunoassay with direct optical (ie, visual) observation; Influenza24$223
Infectious agent antigen detection by immunoassay with direct optical (ie, visual) observation; Streptococcus, group A12$88
Unlisted microbiology procedure12$60
Alcohol and/or drug screening32$0

2018

Largest Medicaid services in 2018
Return visit (30+ min)3,491$150,884
Diabetes outpatient self-management training services, individual, per 30 minutes482$22,379
New patient visit (45+ min)163$12,973
Periodic comprehensive preventive medicine reevaluation and management of an individual including an age and gender appropriate history, examination, counseling/anticipatory guidance/risk factor reduction interventions, and the ordering of laboratory/diagnostic procedures, established patient; 40-64 years183$7,790
Alcohol and/or drug screening301$5,640
Periodic comprehensive preventive medicine reevaluation and management of an individual including an age and gender appropriate history, examination, counseling/anticipatory guidance/risk factor reduction interventions, and the ordering of laboratory/diagnostic procedures, established patient; 65 years and older122$5,551
Influenza virus vaccine, quadrivalent (IIV4), split virus, 0.5 mL dosage, for intramuscular use128$3,345
Periodic comprehensive preventive medicine reevaluation and management of an individual including an age and gender appropriate history, examination, counseling/anticipatory guidance/risk factor reduction interventions, and the ordering of laboratory/diagnostic procedures, established patient; 18-39 years34$1,367
Infectious agent antigen detection by immunoassay with direct optical (ie, visual) observation; Influenza115$994
Immunization administration (includes percutaneous, intradermal, subcutaneous, or intramuscular injections); 1 vaccine (single or combination vaccine/toxoid)162$882
Infectious agent antigen detection by immunoassay with direct optical (ie, visual) observation; Streptococcus, group A58$396
Unlisted microbiology procedure45$208

Drugs they prescribed that Part D paid

$24,580

Pharmacies billed $24,580 in 2024.

This is pharmacy cost, not the office bill, and not what patients paid.

Opioids were 0% of their Part D prescriptions (0 of 595) in 2024. At or below the middle of the specialty; the typical general practice clinician is at 0%.

569 generic and 26 brand-name prescriptions · $24,580 in drug cost · 49 antibiotic prescriptions to 30 people.

Part D prescriptions only. The opioid rate is opioid prescriptions as a share of all this clinician's Part D prescriptions; surgeons and pain specialists run higher than others, so it is shown against the same specialty.

Largest Part D drug costs
Betamethasone Dipropionate12$684$57
Rosuvastatin14$630$45
Gemfibrozil11$337$31
Atorvastatin38$317$8
Levothyroxine26$314$12
See all 18 drugs
Every Part D drug this clinician prescribed
Betamethasone Dipropionate12$684$57
Rosuvastatin14$630$45
Gemfibrozil11$337$31
Atorvastatin38$317$8
Levothyroxine26$314$12
Omeprazole15$283$19
Tamsulosin17$225$13
Simvastatin45$213$5
Losartan24$206$9
Amlodipine Besylate53$184$3
Metformin32$142$4
Metoprolol17$130$8
Lisinopril16$116$7
Ciprofloxacin14$67$5
Ibuprofen15$49$3
Amoxicillin14$20$1
Azithromycin16$19$1
Prednisone11$16$1

Year by year

Part D prescribing by year
2024595900% (0)4%$24,580
2023698990% (0)4%$42,113
2022766980% (0)5%$46,647
20218411120% (0)None$52,927
20201,083127NoneNone$55,704
2019915134NoneNone$56,655
2018758116None8%$30,410
2017761106NoneNone$21,267
20168891140% (0)None$28,934
201545482NoneNone$11,895
201433554NoneNone$13,608
201317146NoneNone$8,386

Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.

See the drugs prescribed each year

2023: 21 drugs

Part D drugs prescribed in 2023
Amlodipine Besylate55$1,543$28
Omeprazole22$1,273$58
Simvastatin46$1,221$27
Betamethasone Dipropionate12$1,102$92
Gabapentin12$987$82
Metformin33$842$26
Gemfibrozil16$796$50
Rosuvastatin11$773$70
Losartan31$729$24
Atorvastatin26$647$25
Triamcinolone Acetonide11$615$56
Tamsulosin16$556$35
Metoprolol15$486$32
Levothyroxine21$455$22
Glipizide Er13$395$30
Lisinopril25$326$13
Paxlovid (Eua)26$272$10
Naproxen20$135$7
Ibuprofen17$126$7
Amoxicillin18$110$6
Ciprofloxacin15$81$5

2022: 18 drugs

Part D drugs prescribed in 2022
Betamethasone Dipropionate12$1,692$141
Simvastatin58$1,178$20
Amlodipine Besylate53$1,096$21
Atorvastatin51$913$18
Levothyroxine28$815$29
Omeprazole22$644$29
Gemfibrozil14$571$41
Losartan42$562$13
Metformin41$541$13
Metoprolol15$333$22
Tamsulosin12$326$27
Lisinopril30$290$10
Triamcinolone Acetonide20$251$13
Alendronate14$186$13
Paxlovid (Eua)18$184$10
Naproxen26$132$5
Ciprofloxacin13$72$6
Amoxicillin13$59$5

2021: 20 drugs

Part D drugs prescribed in 2021
Januvia14$21,979$1,570
Betamethasone Dipropionate12$1,834$153
Amlodipine Besylate63$838$13
Atorvastatin41$832$20
Levothyroxine30$721$24
Losartan57$711$12
Simvastatin71$695$10
Tamsulosin22$538$24
Metformin56$510$9
Omeprazole19$464$24
Lisinopril35$345$10
Metoprolol14$332$24
Gabapentin14$204$15
Alendronate17$182$11
Ibuprofen20$131$7
Ciprofloxacin13$109$8
Triamcinolone Acetonide11$96$9
Amoxicillin15$87$6
Metoprolol15$83$6
Atenolol14$74$5

2020: 27 drugs

Part D drugs prescribed in 2020
Januvia11$16,468$1,497
Betamethasone Dipropionate12$2,119$177
Simvastatin108$930$9
Losartan64$915$14
Levothyroxine36$901$25
Atorvastatin47$754$16
Tamsulosin32$687$21
Diclofenac14$637$46
Gemfibrozil16$593$37
Amlodipine Besylate87$576$7
Metoprolol20$449$22
Omeprazole28$373$13
Gabapentin23$331$14
Metformin33$280$8
Alendronate21$276$13
Finasteride13$234$18
Trazodone17$221$13
Lisinopril30$221$7
Atenolol19$191$10
Triamcinolone Acetonide14$162$12
Amoxicillin30$141$5
Naproxen23$136$6
Azithromycin26$114$4
Ciprofloxacin15$71$5
Cephalexin11$60$5
Hydrochlorothiazide14$60$4
Metoprolol12$51$4

2019: 25 drugs

Part D drugs prescribed in 2019
Januvia13$17,637$1,357
Metoprolol23$889$39
Simvastatin93$840$9
Losartan50$588$12
Tamsulosin23$578$25
Levothyroxine21$496$24
Metformin32$495$15
Atorvastatin33$477$14
Amlodipine Besylate51$472$9
Gabapentin12$211$18
Triamcinolone Acetonide13$204$16
Alendronate20$192$10
Omeprazole20$183$9
Amoxicillin27$173$6
Lisinopril20$170$9
Azithromycin23$170$7
Glipizide11$124$11
Prednisone16$102$6
Atenolol16$100$6
Metoprolol16$99$6
Ciprofloxacin11$97$9
Naproxen20$93$5
Ibuprofen14$75$5
Cephalexin13$74$6
Meclizine11$43$4

2018: 21 drugs

Part D drugs prescribed in 2018
Januvia11$10,822$984
Simvastatin101$764$8
Gabapentin16$744$46
Metoprolol18$604$34
Levothyroxine23$528$23
Tamsulosin15$440$29
Losartan45$364$8
Amlodipine Besylate48$313$7
Omeprazole23$257$11
Gemfibrozil16$256$16
Clotrimazole14$254$18
Finasteride11$245$22
Metformin24$219$9
Alendronate25$198$8
Atorvastatin13$167$13
Amoxicillin25$130$5
Naproxen22$115$5
Azithromycin18$102$6
Lisinopril14$76$5
Metoprolol12$65$5
Prednisone12$47$4

2017: 18 drugs

Part D drugs prescribed in 2017
Levothyroxine58$570$10
Amlodipine Besylate79$484$6
Simvastatin104$456$4
Atorvastatin20$316$16
Losartan47$293$6
Tamsulosin17$287$17
Alendronate34$258$8
Azithromycin26$141$5
Lisinopril20$110$5
Metformin14$100$7
Naproxen19$80$4
Gemfibrozil11$80$7
Finasteride12$74$6
Glipizide12$60$5
Ciprofloxacin11$60$5
Hydrochlorothiazide15$54$4
Sertraline13$50$4
Lisinopril-Hydrochlorothiazide12$45$4

2016: 23 drugs

Part D drugs prescribed in 2016
Clonidine15$4,100$273
Tekturna11$2,129$194
Levothyroxine59$708$12
Simvastatin136$680$5
Amlodipine Besylate77$562$7
Omeprazole40$335$8
Tamsulosin12$299$25
Metoprolol14$251$18
Lisinopril30$186$6
Losartan-Hydrochlorothiazide19$163$9
Losartan25$161$6
Alendronate25$155$6
Naproxen26$127$5
Atenolol20$121$6
Metformin20$113$6
Doxazosin Mesylate12$105$9
Cephalexin11$103$9
Metoprolol19$100$5
Gemfibrozil11$78$7
Azithromycin12$70$6
Glipizide14$59$4
Ciprofloxacin11$45$4
Finasteride13$35$3

2015: 11 drugs

Part D drugs prescribed in 2015
Levothyroxine28$400$14
Tamsulosin13$360$28
Alendronate33$211$6
Simvastatin42$176$4
Naproxen29$160$6
Isosorbide Mononitrate Er18$147$8
Atorvastatin14$139$10
Amlodipine Besylate24$107$4
Clonidine13$106$8
Sertraline11$62$6
Hydrochlorothiazide17$48$3

2014: 10 drugs

Part D drugs prescribed in 2014
Potassium Citrate Er11$1,290$117
Levothyroxine23$367$16
Simvastatin41$278$7
Amlodipine Besylate26$166$6
Metformin14$79$6
Lisinopril15$77$5
Allopurinol14$76$5
Alendronate11$68$6
Amoxicillin13$67$5
Hydrochlorothiazide17$48$3

2013: 1 drug

Part D drugs prescribed in 2013
Simvastatin13$73$6

Money from drug and device companies

$55 in 2024

Industry payments by year
202411None$55
202214None$227

Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.

A payment is not proof that care is biased.

Payments by company
RxSightRxsight Contact Lens$55
1 payment
  • Meals for Rxsight Contact Lens · 2024-12-11 · $55
See the published payment
Every published payment
RxSightMeals · 2024-12-11Rxsight Contact Lens$55
See earlier years (2022)

2022: $227

Payments by company in 2022
AbbvieUbrelvy$227
4 payments
  • Meals for Ubrelvy · 2022-11-29 · $30
  • Meals for Ubrelvy · 2022-11-29 · $30
  • Meals for Ubrelvy · 2022-09-26 · $83
  • Meals for Ubrelvy · 2022-09-26 · $83

Professional record

NPI
1013118884
Licence
CA A101860California A101860: Current · expires 2027-07-31
Gender
Male
More record details
Sole proprietor
No
Taxonomy
Federal specialty code 2083X0100X (2083X0100X)
Mailing address
770 Mason St, Vacaville, CA, 95688
NPI first listed
2007-05-30
NPI last updated
2012-08-21

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