Mallar Bhattacharya, MD
Critical Care Medicine (Internal Medicine) Physician · San Francisco, CA
Mallar Bhattacharya, MD is a critical care medicine (internal medicine) physician with a practice address in San Francisco, California, and NPI 1063558757, issued on Jan 29, 2007. Check the license (California A98985, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mallar Bhattacharya
- Credential
- MD
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- A98985 CA
Self-reported in NPPES; status is on the state search - Practice location
- 505 Parnassus Ave, San Francisco, CA 94143
- Phone
- (415) 476-6926
- Enumerated
- Jan 29, 2007
- Record last updated
- Aug 16, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090225000447); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 2004
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 723 in California → Look up another NPI →
Also registered at 505 Parnassus Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alexander Aabedi, MDStudent in an Organized Health Care Education/Training Program1245971480
- Kathryn Aaronson, RN, CPNPPediatric Nurse Practitioner1992030951
- Sharon AbadaStudent in an Organized Health Care Education/Training Program1003492844
- Abul Abbas, MBBSAnatomic Pathology Physician1881652964
- Jesse Abelson, MDInternal Medicine Physician1083843817
- Rhonald AbitonaAcute Care Nurse Practitioner1164993473
Verify Mallar Bhattacharya in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A98985Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- University Anesthesia Medical GroupSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mallar Bhattacharya among 723 critical care medicine (internal medicine) physician records in California
Mallar Bhattacharya, MD is one of 723 critical care medicine (internal medicine) physician records with a practice address in California. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 40% of them.
- NPI issued2007 · 40% of these records are older, 46% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2004 · median 2005 among the 559 with a school on file
- Record last updated2016 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in California
There are 723 critical care medicine (internal medicine) physician records in California.
All 723 in California → Every provider in San Francisco → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Christopher Barnett, MD, MPHSan Francisco, CA 941431538127717
- Sudhamayi Bhadriraju, M.D.San Francisco, CA 941431104116243
- Samuel Brusca, M.D.San Francisco, CA 941431174942148
- Jonathan BudzikSan Francisco, CA 941431356632632
- Harold Collard, MDSan Francisco, CA 941431740245380
- Kenneth Fang, M.D.San Francisco, CA 941431760566020
- Yaron Gesthalter, MDSan Francisco, CA 941431013183599
- Stefano Iantorno, MD, PHDSan Francisco, CA 941431952860900
Common questions
What is Mallar Bhattacharya, MD's NPI number?
Mallar Bhattacharya, MD's National Provider Identifier (NPI) is 1063558757, issued on Jan 29, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mallar Bhattacharya, MD located?
The NPPES record lists a practice address at 505 Parnassus Ave, San Francisco, CA, 94143. Phone: (415) 476-6926. Providers update this record themselves, so call before visiting.
How can I verify Mallar Bhattacharya, MD's license?
NPPES lists California license number A98985, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.