Sumit Kumar Majumder, M.D.
Infectious Disease Physician · Los Gatos, CA
Sumit Kumar Majumder, M.D. is an infectious disease physician with a practice address in Los Gatos, California, and NPI 1245317692, issued on Nov 1, 2006. Check the license (California A50797, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sumit Kumar Majumder
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- A50797 CA
Self-reported in NPPES; status is on the state search - Practice location
- 14901 National Ave, Los Gatos, CA 95032
- Phone
- (408) 374-5340
- Enumerated
- Nov 1, 2006
- Record last updated
- Nov 14, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (408) 374-8922
- Medicaid ID
- 2076325 CA
- Medicare enrollment
- Enrolled (PECOS I20150330000973); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 1,119 in California → Look up another NPI →
Also registered at 14901 National Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Sumit Kumar Majumder in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A50797Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% fewer Medicare Part D claims than the average infectious disease physician in 2024
208 Medicare Part D claims for 59 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Biktarvy19 claims
- Ampicillin-Sulbactam14 claims
- Ertapenem14 claims
- Emtricitabine-Tenofovir Disop13 claims
- Tivicay13 claims
- Amitriptyline Hcl12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 67.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $15.82
1 payment: food and beverage; the largest payer was Gilead Sciences, Inc. The 3,895 providers of this specialty with any payment received $4,362.19 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Sumit Kumar Majumder among 1,119 infectious disease physician records in California
Sumit Kumar Majumder, M.D. is one of 1,119 infectious disease physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 54% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1983 · median 2003 among the 735 with a school on file
- Record last updated2013 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in California
There are 1,119 infectious disease physician records in California.
All 1,119 in California → Every provider in Los Gatos → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Minal Kapoor, MDLos Gatos, CA 950321962549220
- Rachana Palnitkar, M.D.Los Gatos, CA 950321508050790
- Meenu Vaid, M.D.Hollister, CA 950231558430223
- Keval Patel, M.D.Gilroy, CA 950201447291182
- Jonathan Blum, MDSanta Clara, CA 950511891872735
- Ryan Knueppel, M.D.Santa Clara, CA 950511184896656
- Mark Lillo, MDSanta Clara, CA 950511497831325
- Eva Mortensen, MDSanta Clara, CA 950511750455358
Common questions
What is Sumit Kumar Majumder, M.D.'s NPI number?
Sumit Kumar Majumder, M.D.'s National Provider Identifier (NPI) is 1245317692, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Sumit Kumar Majumder, M.D. located?
The NPPES record lists a practice address at 14901 National Ave, Los Gatos, CA, 95032. Phone: (408) 374-5340. Providers update this record themselves, so call before visiting.
How can I verify Sumit Kumar Majumder, M.D.'s license?
NPPES lists California license number A50797, 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.
How much does Sumit Kumar Majumder, M.D. prescribe under Medicare Part D?
In 2024, Sumit Kumar Majumder, M.D. had 208 Medicare Part D claims for 59 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
What is Sumit Kumar Majumder, M.D.'s MIPS final score?
The 2023 MIPS final score is 67.3 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.