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Vanni Chendu Manthiram, MD

General Surgery · Stanford

NPI 1326086372

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
11
3 carriers
Office
1

Offices

1 location · Stanford Health Care · 3,152 clinicians in this group

Looking this up.

Hospitals listed: Stanford Health Care Tri-Valley. That is not proof they admit you there this week.

Plans that list them

11 plans · 3 carriers

A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Manthiram’s office at (650) 723-4000 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.

11 of 11 plans

Plans whose provider directory lists this clinician
Alignment Health BreathEasy (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Clarity (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Harmony (HMO)Alignment Health PlanListedOct 3, 2026
Alignment Health Heart & Diabetes (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Heart & Diabetes CalPlus (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Heart & Diabetes Care (HMO C-SNP)Alignment Health PlanListedSep 28, 2026
Alignment Health Heart & Diabetes Choice (HMO C-SNP)Alignment Health PlanListedSep 28, 2026
Alignment Health Honor+ Plan (HMO)Alignment Health PlanListedOct 3, 2026
Alignment Health My Choice CalCare (HMO)Alignment Health PlanListedOct 3, 2026
SCAN Strive (HMO C-SNP)SCAN Health PlanListedOct 3, 2026
DualConnect (HMO D-SNP)Santa Clara Family Health PlanListedSep 1, 2026

California Medical Board record

Licence A74140 · Current

Licensed to practise in California · since 2001 · expires 2026-10-31 · Wayne State University School of Medicine.

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

Hospitals they work in

1 hospital

These rate the hospital, not this clinician. Most measures at most hospitals are no different from the national rate.

  • Stanford Health Care Tri-ValleyPleasanton, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency department · Birthing-friendlyPart of Stanford Health Care, which runs 3 hospitalsPatients rate it 3 of 5 · 74% would definitely recommend it
    Overall rating: 5 of 5 starsBetter than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.178, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.237, Oct 2024 – Sep 2025
See every measure and the patient survey for Stanford Health Care Tri-Valley

Behind the star rating — Deaths: 2 better, 6 the same, 0 worse of 8 measures. Safety: 2 better, 5 the same, 0 worse of 7 measures. Readmissions: 2 better, 7 the same, 0 worse of 9 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.

Every scored measure at Stanford Health Care Tri-Valley
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.178BetterOct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections0.237BetterOct 2024 – Sep 2025
Abdominopelvic accidental puncture or laceration rateComplications and deaths0.79 (0 to 1.73) · 1,041 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths0.79 (0.5 to 1.08)No differentJul 2022 – Jun 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths145.81 (96.5 to 195.12) · 72 casesNo differentJul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths2.9 · 55 casesNoneJul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths8.6 · 92 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths12.5 · 96 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths9.5 · 395 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths10.3 · 391 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths10.1 · 162 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths3 · 1,736 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.16 (0 to 0.37) · 4,425 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.22 (0.02 to 0.41) · 4,771 casesNo differentJul 2022 – Jun 2024
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths3.45 (1.46 to 5.44) · 1,403 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths1.5 (0.05 to 2.94) · 645 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths1.81 (0.38 to 3.24) · 1,279 casesNo differentJul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths8.53 (3.2 to 13.85) · 639 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths5.15 (1.89 to 8.41) · 648 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.61 (0.14 to 3.07) · 370 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.16 (0 to 0.83) · 4,160 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths4 · 74 casesNoneApr 2023 – Mar 2025
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.369No differentOct 2024 – Sep 2025
MRSA BacteremiaInfections1.112No differentOct 2024 – Sep 2025
SSI - Colon SurgeryInfections0No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits13.1 · 110 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits20.1 · 437 casesNoneJul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits-5.8 · 94 casesNoneJul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits-19.3 · 456 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits-0.3 · 402 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits15.8 · 358 casesNoneJul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits6.8 (4.7 to 9.6) · 198 casesNo differentJan 2024 – Dec 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits10.1 (7.5 to 13.6) · 198 casesNo differentJan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits5.3 · 80 casesNoneJul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits10.9 · 46 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits19.3 · 92 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits12.4 (9.6 to 16.2) · 1,532 casesNo differentJan 2022 – Dec 2024
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits1 (0.8 to 1.2) · 929 casesNo differentJan 2024 – Dec 2024

What patients said (1,268 patients answered, 26% of those asked)

Patient survey stars by topic at Stanford Health Care Tri-Valley
Cleanliness3
Nurse communication3
Doctor communication4
Communication about medicines3
Discharge information4
Overall hospital rating3
Quietness2
Recommend hospital4
Share of patients giving the best answer at Stanford Health Care Tri-Valley
Room was "always" clean65%
Nurses "always" communicated well77%
Doctors "always" communicated well79%
Staff "always" explained58%
Yes, staff "did" give patients this information88%
Yes, staff "did" give patients information about help after discharge88%
Doctors "always" explained things so they could understand74%
Doctors "always" listened carefully78%
Doctors "always" treated them with courtesy and respect86%
Patients who gave a rating of "9" or "10" (high)70%
Staff "always" explained new medications72%
Nurses "always" explained things so they could understand73%
Nurses "always" listened carefully74%
Nurses "always" treated them with courtesy and respect84%
"Always" quiet at night42%
"YES", patients would definitely recommend the hospital74%
Staff "always" explained possible side effects44%
Yes, staff "did" give patients information about possible symptoms89%

Original Medicare doctor bills

$76,943

Medicare paid this office $76,943 for 198 people.

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

Largest Original Medicare bills
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes49$11,940$102
Partial removal of breast12$8,197$585
Initial hospital care with moderate level of medical decision making at least 75 minutes45$6,190$138
Removal of gallbladder using an endoscope11$5,753$523
Return visit (30+ min)39$5,196$111
See all 10 services
Every Original Medicare service billed
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes49$11,940$102
Partial removal of breast12$8,197$585
Initial hospital care with moderate level of medical decision making at least 75 minutes45$6,190$138
Removal of gallbladder using an endoscope11$5,753$523
Return visit (30+ min)39$5,196$111
New patient visit (45+ min)36$5,107$142
New patient visit (60+ min)14$2,700$193
Short return visit (20+ min)25$2,433$84
Long return visit (40+ min)14$2,025$145
Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's17$266$15

Procedures Medicare counted

Procedure volume Medicare published
Colonoscopy1-10None
Hernia repair (minimally invasive)1-10None
Mastectomy13More than 68% of doctors who do this

Who their Medicare patients are

198 Original Medicare patients in 2024. Average age 75 · Under 65 9% · 85 and older 17% · Women 64% · Also on Medicaid 26% · Health risk score 1.70. Above the middle of the specialty; the typical general surgery clinician is at 1.69.

Conditions among them: High blood pressure 75% · Chronic kidney disease 38% · Cancer 35% · Diabetes 33% · Coronary heart disease 25% · Atrial fibrillation 22% · COPD 19% · Depression 19% · Heart failure 18% · Dementia 9% · Stroke 9%.

The office billed $532,130, Medicare allowed $100,343 and paid $76,943; for 441 services of 54 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
2024198441751.70$532,130$76,943
2023175409741.63$408,510$83,247
2022187392741.61$396,257$86,127
2021195478751.38$528,705$116,158
2020144329751.68$390,365$69,149
2019180407741.52$470,470$91,150
2018186463751.57$482,974$91,966
2017178434741.73$439,466$89,347
2016131334741.54$320,670$65,717
2015142361721.87$311,701$72,585
2014154369741.50$240,364$70,500
2013132385741.45$195,045$65,513

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: 8 services

Original Medicare services billed in 2023
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes35$9,809$104
Removal of gallbladder using an endoscope17$9,514$560
Initial hospital care with moderate level of medical decision making at least 75 minutes38$5,654$149
Return visit (30+ min)43$5,631$110
New patient visit (45+ min)40$5,515$138
Long return visit (40+ min)18$3,344$167
New patient visit (60+ min)15$2,770$185
Short return visit (20+ min)16$1,564$82

2022: 9 services

Original Medicare services billed in 2022
New patient visit (45+ min)66$9,509$144
Removal of gallbladder using an endoscope13$7,488$576
Initial hospital care with moderate level of medical decision making at least 75 minutes37$6,796$174
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes32$6,379$90
Return visit (30+ min)38$4,311$105
Biopsy or removal of deep lymph nodes of underarm12$2,670$223
New patient visit (60+ min)13$2,649$204
Long return visit (40+ min)12$2,006$167
Short return visit (20+ min)18$1,373$76

2021: 12 services

Original Medicare services billed in 2021
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes42$10,164$91
Partial removal of breast15$9,329$549
Removal of gallbladder using an endoscope13$7,622$586
New patient visit (45+ min)49$7,397$151
Initial hospital care with moderate level of medical decision making at least 75 minutes34$6,105$180
New patient visit (60+ min)24$4,816$201
Return visit (30+ min)31$4,123$121
Biopsy or removal of deep lymph nodes of underarm14$2,838$203
Long return visit (40+ min)13$2,415$173
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes14$1,876$125
Short return visit (20+ min)15$1,346$79
New patient visit (30+ min)11$1,084$99

2020: 7 services

Original Medicare services billed in 2020
Partial removal of breast14$7,960$531
New patient visit (45+ min)57$7,557$133
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes34$6,608$96
Removal of gallbladder using an endoscope11$6,062$551
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes32$3,961$124
Return visit (30+ min)24$2,849$102
Short return visit (20+ min)13$909$61

2019: 6 services

Original Medicare services billed in 2019
New patient visit (45+ min)66$9,460$143
Removal of gallbladder using an endoscope16$9,408$588
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes32$7,795$92
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes49$6,026$121
Short return visit (20+ min)20$1,347$61
Return visit (30+ min)13$1,240$95

2018: 7 services

Original Medicare services billed in 2018
New patient visit (45+ min)68$9,235$136
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes35$7,967$93
Removal of gallbladder using an endoscope11$6,332$576
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes52$6,286$121
Return visit (30+ min)24$2,614$97
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes20$2,587$65
Short return visit (20+ min)24$1,750$60

2017: 10 services

Original Medicare services billed in 2017
New patient visit (45+ min)76$10,634$140
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes32$7,213$91
Partial removal of breast12$6,739$562
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes44$5,246$119
Insertion of central venous tube with port (5 years or older)13$3,873$298
Biopsy or removal of deep lymph nodes of underarm12$2,289$191
Return visit (30+ min)21$2,284$95
Short return visit (20+ min)24$1,675$64
Imaging of lymph nodes during surgery12$1,388$116
Fluoroscopic guidance for insertion or removal of central vein access device13$215$17

2016: 7 services

Original Medicare services billed in 2016
New patient visit (45+ min)56$7,763$139
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes20$4,644$89
Insertion of central venous tube with port (5 years or older)13$3,982$306
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes31$3,751$117
Return visit (30+ min)22$2,351$94
Short return visit (20+ min)23$1,835$63
Fluoroscopic guidance for insertion or removal of central vein access device13$212$16

2015: 7 services

Original Medicare services billed in 2015
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes17$5,029$90
New patient visit (45+ min)34$4,756$140
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes38$4,593$118
Insertion of central venous tube with port (5 years or older)11$3,210$292
Short return visit (20+ min)33$2,354$60
New patient visit (30+ min)20$1,629$81
Fluoroscopic guidance for insertion or removal of central vein access device11$178$16

2014: 7 services

Original Medicare services billed in 2014
Removal of gallbladder using an endoscope15$7,736$516
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes23$4,732$89
New patient visit (45+ min)30$4,178$139
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes34$4,117$118
Return visit (30+ min)32$3,215$89
Initial hospital care with moderate level of medical decision making at least 75 minutes15$2,607$174
Short return visit (20+ min)24$1,817$65

2013: 7 services

Original Medicare services billed in 2013
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes33$10,605$87
Initial hospital care with moderate level of medical decision making at least 75 minutes26$4,916$164
New patient visit (45+ min)25$3,617$145
Return visit (30+ min)27$3,141$90
New patient visit (60+ min)12$2,035$170
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes14$1,724$115
Short return visit (20+ min)11$986$66

Drugs they prescribed that Part D paid

$345

Pharmacies billed $345 in 2024.

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

Opioids were 75% of their Part D prescriptions (41 of 55) in 2024. A higher opioid share than 9 in 10 peers; the typical general surgery clinician is at 34%.

55 generic and 0 brand-name prescriptions · $345 in drug cost.

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
Hydrocodone-Acetaminophen33$144$4

Year by year

Part D prescribing by year
2024554275% (41)0%$345
2023453278% (35)0%$363
2022543974% (40)None$1,129
2021604980% (48)0%$621
2020362964% (23)None$1,785
2019413385% (35)None$3,050
2018402768% (27)0%$494
2017373281% (30)0%$429
2016433472% (31)None$520
2015613972% (44)None$588
2014393385% (33)0%$331
2013372462% (23)None$975

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

See the drugs prescribed each year

2023: 1 drug

Part D drugs prescribed in 2023
Hydrocodone-Acetaminophen30$120$4

2022: 1 drug

Part D drugs prescribed in 2022
Hydrocodone-Acetaminophen34$103$3

2021: 1 drug

Part D drugs prescribed in 2021
Hydrocodone-Acetaminophen41$187$5

2020: 1 drug

Part D drugs prescribed in 2020
Hydrocodone-Acetaminophen22$55$2

2019: 1 drug

Part D drugs prescribed in 2019
Hydrocodone-Acetaminophen31$168$5

2018: 1 drug

Part D drugs prescribed in 2018
Hydrocodone-Acetaminophen21$190$9

2017: 1 drug

Part D drugs prescribed in 2017
Hydrocodone-Acetaminophen30$187$6

2016: 1 drug

Part D drugs prescribed in 2016
Hydrocodone-Acetaminophen29$282$10

2015: 1 drug

Part D drugs prescribed in 2015
Hydrocodone-Acetaminophen33$306$9

2014: 1 drug

Part D drugs prescribed in 2014
Hydrocodone-Acetaminophen25$224$9

2013: 1 drug

Part D drugs prescribed in 2013
Hydrocodone-Acetaminophen21$204$10

Money from drug and device companies

$33 in 2025

Industry payments by year
202511None$33
202411None$20
202311None$19
202223None$148
202126None$222
202014None$392
2019112None$7,869

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
MedtronicTransorb$33
1 payment
  • Meals for Transorb · 2025-07-01 · $33
See the published payment
Every published payment
MedtronicMeals · 2025-07-01Transorb$33
See earlier years (2024, 2023, 2022, 2021, 2020, 2019)

2024: $20

Payments by company in 2024
Sirius Medical SystemsPintuition$20
1 payment
  • Meals for Pintuition · 2024-06-12 · $20

2023: $19

Payments by company in 2023
Molli Surgical (us)None$19
1 payment
  • Meals · 2023-02-02 · $19

2022: $148

Payments by company in 2022
Intuitive SurgicalDa Vinci Surgical System$121
2 payments
  • Meals for Da Vinci Surgical System · 2022-11-15 · $99
  • Meals for Da Vinci Surgical System · 2022-08-09 · $22
Merit Medical SystemsSavi Scout$27
1 payment
  • Meals for Savi Scout · 2022-06-29 · $27

2021: $222

Payments by company in 2021
Intuitive SurgicalDa Vinci Surgical System$139
4 payments
  • Meals for Da Vinci Surgical System · 2021-12-07 · $37
  • Meals for Da Vinci Surgical System · 2021-10-05 · $44
  • Meals for Da Vinci Surgical System · 2021-09-07 · $28
  • Meals for Da Vinci Surgical System · 2021-09-07 · $30
MedtronicLigasure$83
2 payments
  • Meals for Dextile · 2021-10-04 · $13
  • Meals for Ligasure · 2021-09-13 · $70

2020: $392

Payments by company in 2020
Intuitive SurgicalDa Vinci Surgical System$392
4 payments
  • Meals for Da Vinci Surgical System · 2020-02-18 · $88
  • Meals for Da Vinci Surgical System · 2020-01-14 · $87
  • Meals for Da Vinci Surgical System · 2020-01-14 · $87
  • Meals for Da Vinci Surgical System · 2020-01-14 · $130

2019: $7,869

Payments by company in 2019
Intuitive SurgicalDa Vinci Surgical System$7,869
12 payments
  • Travel for Da Vinci Surgical System · 2019-12-05 · $51
  • Meals for Da Vinci Surgical System · 2019-12-05 · $37
  • Travel for Da Vinci Surgical System · 2019-12-05 · $47
  • Travel for Da Vinci Surgical System · 2019-12-05 · $52
  • Travel for Da Vinci Surgical System · 2019-12-05 · $37
  • Meals for Da Vinci Surgical System · 2019-12-05 · $139
  • Meals for Da Vinci Surgical System · 2019-10-09 · $51
  • Education for Da Vinci Surgical System · 2019-10-08 · $3,000
  • Education for Da Vinci Surgical System · 2019-10-03 · $4,000
  • Meals for Da Vinci Surgical System · 2019-10-03 · $88
  • Meals for Da Vinci Surgical System · 2019-08-22 · $101
  • Travel for Da Vinci Surgical System · 2019-07-25 · $267

Professional record

NPI
1326086372
Licence
CA A74140California A74140: Current · expires 2026-10-31
Trained
Wayne State University School of Medicine, 1999
Video visits
Lists video visits
Gender
Female
More record details
Sole proprietor
Yes
Medicaid ID
WA 1122894, WA 8519860
Taxonomy
Surgery (208600000X)
Mailing address
300 Pasteur Dr, Palo Alto, CA, 94304
NPI first listed
2006-06-03
NPI last updated
2024-04-27
NPI record certified
2024-04-27

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