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Mallar Bhattacharya, MD

Critical Care (Intensivists) · San Francisco

NPI 1063558757

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
9
1 carrier
Office
1
Since medical school
22 years
Harvard Medical School, 2004

Offices

1 location · University Anesthesia Medical Group · 402 clinicians in this group

Looking this up.

Hospitals listed: UCSF Medical Center. That is not proof they admit you there this week.

Plans that list them

9 plans · 1 carrier

A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Bhattacharya’s office at (415) 476-1000 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
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

California Medical Board record

Licence A98985 · Current

Licensed to practise in California · since 2007 · expires 2028-07-31 · Harvard Medical School.

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

School, training and certification

What this clinician told their state board, medical school and everything before it. Only some states publish this, so nothing here means the state does not say, not that there was no training or certification.

Specialty certification

  • American Board of Internal Medicine - Critical Care Medicine
  • American Board of Internal Medicine - Pulmonary Disease

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.

  • UCSF Medical CenterSan Francisco, CAAcute Care Hospital · Voluntary non-profit - Other · Has an emergency department · Birthing-friendlyPart of University of California Health, which runs 12 hospitalsHome of UCSF Helen Diller Family Comprehensive Cancer Center, a National Cancer Institute designated comprehensive cancer centrePatients rate it 4 of 5 · 81% would definitely recommend it
    Overall rating: 4 of 5 starsWorse than the national rate — Perioperative pulmonary embolism or deep vein thrombosis rate: 4.9 (3.79 to 6.02) · 7,590 cases, Jul 2022 – Jun 2024Worse than the national rate — Rate of inpatient admissions for patients receiving outpatient chemotherapy: 12.8 (11.3 to 14.4) · 2,019 cases, Jan 2024 – Dec 2024Better than the national rate — Death rate among surgical inpatients with serious treatable complications: 139.4 (110.22 to 168.58) · 452 cases, Jul 2022 – Jun 2024Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.622, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.626, Oct 2024 – Sep 2025Better than the national rate — MRSA Bacteremia: 0.491, Oct 2024 – Sep 2025Better than the national rate — Ratio of unplanned hospital visits after hospital outpatient surgery: 0.8 (0.7 to 1) · 2,336 cases, Jan 2024 – Dec 2024
See every measure and the patient survey for UCSF Medical Center

Behind the star rating — Deaths: 5 better, 3 the same, 0 worse of 8 measures. Safety: 3 better, 5 the same, 0 worse of 8 measures. Readmissions: 3 better, 5 the same, 3 worse of 11 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.

Every scored measure at UCSF Medical Center
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths4.9 (3.79 to 6.02) · 7,590 casesWorseJul 2022 – Jun 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits12.8 (11.3 to 14.4) · 2,019 casesWorseJan 2024 – Dec 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths139.4 (110.22 to 168.58) · 452 casesBetterJul 2022 – Jun 2024
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.622BetterOct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections0.626BetterOct 2024 – Sep 2025
MRSA BacteremiaInfections0.491BetterOct 2024 – Sep 2025
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits0.8 (0.7 to 1) · 2,336 casesBetterJan 2024 – Dec 2024
Abdominopelvic accidental puncture or laceration rateComplications and deaths1.24 (0.58 to 1.9) · 4,689 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths1.05 (0.89 to 1.2)No differentJul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths1.9 · 89 casesNoneJul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths7.5 · 85 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths10.1 · 132 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths6.6 · 454 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths10.3 · 618 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths9.6 · 380 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths2.7 · 5,000 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.22 (0.06 to 0.38) · 15,965 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.2 (0.05 to 0.35) · 17,859 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths0.85 (0 to 1.83) · 4,184 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2 (1.1 to 2.9) · 6,516 casesNo differentJul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths7.35 (4.49 to 10.21) · 3,989 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths5 (3.22 to 6.77) · 4,087 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.95 (0.74 to 3.15) · 2,034 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.95 (0.63 to 1.28) · 15,431 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths4 · 399 casesNoneApr 2023 – Mar 2025
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.899No differentOct 2024 – Sep 2025
SSI - Abdominal HysterectomyInfections0.689No differentOct 2024 – Sep 2025
SSI - Colon SurgeryInfections1.224No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits16 · 156 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits20 · 564 casesNoneJul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits60.3 · 160 casesNoneJul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits-9.7 · 550 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits44.1 · 660 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits16.8 · 667 casesNoneJul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits5.7 (4.8 to 6.7) · 2,019 casesNo differentJan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits6 · 421 casesNoneJul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits10.5 · 53 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits20 · 107 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits13.9 (11.3 to 17.1) · 3,247 casesNo differentJan 2022 – Dec 2024

What patients said (3,181 patients answered, 25% of those asked)

Patient survey stars by topic at UCSF Medical Center
Cleanliness4
Nurse communication4
Doctor communication4
Communication about medicines3
Discharge information4
Overall hospital rating4
Quietness2
Recommend hospital5
Share of patients giving the best answer at UCSF Medical Center
Room was "always" clean71%
Nurses "always" communicated well80%
Doctors "always" communicated well80%
Staff "always" explained61%
Yes, staff "did" give patients this information88%
Yes, staff "did" give patients information about help after discharge87%
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)76%
Staff "always" explained new medications75%
Nurses "always" explained things so they could understand77%
Nurses "always" listened carefully78%
Nurses "always" treated them with courtesy and respect86%
"Always" quiet at night50%
"YES", patients would definitely recommend the hospital81%
Staff "always" explained possible side effects46%
Yes, staff "did" give patients information about possible symptoms90%

Original Medicare doctor bills

$16,989

Medicare paid this office $16,989 for 51 people.

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

Largest Original Medicare bills
Critical care, first 30-74 minutes32$13,074$184
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes12$1,756$70

Who their Medicare patients are

51 Original Medicare patients in 2024. Average age 72 · Women 35% · Also on Medicaid 57% · Health risk score 3.12. Above the middle of the specialty; the typical critical care (intensivists) clinician is at 2.58.

Conditions among them: High blood pressure 75% · Atrial fibrillation 59% · Coronary heart disease 55% · Diabetes 53% · Chronic kidney disease 49% · COPD 45% · Stroke 45% · Heart failure 41% · Depression 39% · Dementia 29%.

The office billed $135,866, Medicare allowed $21,300 and paid $16,989; for 122 services of 11 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
202451122723.12$135,866$16,989
202368188722.75$229,425$28,816
202272203713.00$244,593$30,931
202170194703.16$216,937$29,209
202081224702.15$217,332$32,107
201993231702.76$156,219$24,118
201885234682.17$121,037$21,280
201758148662.53$88,335$15,820
201657146702.49$109,550$18,210
201562185682.10$138,113$23,057
20143392691.98$68,762$11,466
20131123721.52$11,556$2,098

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: 2 services

Original Medicare services billed in 2023
Critical care, first 30-74 minutes48$24,063$189
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes18$1,938$72

2022: 3 services

Original Medicare services billed in 2022
Critical care, first 30-74 minutes53$25,300$192
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes15$2,010$91
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes15$1,272$64

2021: 3 services

Original Medicare services billed in 2021
Critical care, first 30-74 minutes46$23,572$193
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes23$3,232$92
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes14$1,220$64

2020: 4 services

Original Medicare services billed in 2020
Critical care, first 30-74 minutes50$23,831$199
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes34$3,291$66
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes20$2,962$96
Initial hospital care with straightforward or low level of medical decision making, per day at least 40 minutes11$1,099$100

2019: 3 services

Original Medicare services billed in 2019
Critical care, first 30-74 minutes30$10,928$195
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes44$6,684$93
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes47$5,847$65

2018: 3 services

Original Medicare services billed in 2018
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes56$12,970$93
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes46$4,398$65
Critical care, first 30-74 minutes11$3,106$194

2017: 3 services

Original Medicare services billed in 2017
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes52$9,941$93
Critical care, first 30-74 minutes15$4,846$194
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes11$1,034$65

2016: 2 services

Original Medicare services billed in 2016
Critical care, first 30-74 minutes26$9,733$195
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes40$7,747$92

2015: 3 services

Original Medicare services billed in 2015
Critical care, first 30-74 minutes25$14,400$197
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes29$5,249$94
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes28$2,800$65

2014: 3 services

Original Medicare services billed in 2014
Critical care, first 30-74 minutes17$7,255$196
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes15$2,135$93
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes15$1,672$64

Medicaid work

$3,306 in 2021

Medicaid paid $3,306 for 20 billed services this clinician did in 2021, 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 2021
Critical care, evaluation and management of the critically ill or critically injured patient; first 30-74 minutes20$3,306
Medicaid work by year
202120112$3,306
201839113$3,806
See the largest Medicaid services in earlier years

2018

Largest Medicaid services in 2018
SBSQ HOSPITAL IP/OBS CARE HIGH MDM 50 MINUTES39$3,806

Money from drug and device companies

$9,815 in 2019

A payment is not proof that care is biased.

Payments by company
Merck Sharp & DohmeNone$9,815
15 payments
  • Consulting · 2019-12-18 · $563
  • Travel · 2019-07-26 · $150
  • Consulting · 2019-07-26 · $7,500
  • Meals · 2019-07-11 · $40
  • Meals · 2019-07-11 · $45
  • Meals · 2019-07-11 · $60
  • Travel · 2019-07-10 · $264
  • Travel · 2019-07-10 · $29
  • Meals · 2019-07-10 · $40
  • Meals · 2019-07-10 · $45
  • Meals · 2019-07-10 · $60
  • Meals · 2019-07-10 · $89
  • Travel · 2019-07-09 · $264
  • Meals · 2019-07-09 · $90
  • Travel · 2019-07-09 · $577
See all 15 published payments
Every published payment
Merck Sharp & DohmeConsulting · 2019-12-18None$563
Merck Sharp & DohmeTravel · 2019-07-26None$150
Merck Sharp & DohmeConsulting · 2019-07-26None$7,500
Merck Sharp & DohmeMeals · 2019-07-11None$40
Merck Sharp & DohmeMeals · 2019-07-11None$45
Merck Sharp & DohmeMeals · 2019-07-11None$60
Merck Sharp & DohmeTravel · 2019-07-10None$264
Merck Sharp & DohmeTravel · 2019-07-10None$29
Merck Sharp & DohmeMeals · 2019-07-10None$40
Merck Sharp & DohmeMeals · 2019-07-10None$45
Merck Sharp & DohmeMeals · 2019-07-10None$60
Merck Sharp & DohmeMeals · 2019-07-10None$89
Merck Sharp & DohmeTravel · 2019-07-09None$264
Merck Sharp & DohmeMeals · 2019-07-09None$90
Merck Sharp & DohmeTravel · 2019-07-09None$577

Professional record

NPI
1063558757
Licence
CA A98985California A98985: Current · expires 2028-07-31
Trained
Harvard Medical School, 2004 · 22 years ago
Gender
Male
More record details
Sole proprietor
No
Taxonomy
Federal specialty code 207RC0200X (207RC0200X)
Mailing address
505 Parnassus Ave, San Francisco, CA, 94143
NPI first listed
2007-01-29
NPI last updated
2016-08-16

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