Ruma Kumar, MD
Hospitalist Physician · San Jose, CA
Ruma Kumar, MD is a hospitalist physician with a practice address in San Jose, California, and NPI 1578635322, issued on Nov 15, 2006. Check the license (California G77459, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ruma Kumar
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- G77459 CA
Self-reported in NPPES; status is on the state search - Practice location
- 260 International Cir, San Jose, CA 95119
- Phone
- (408) 972-7000
- Enumerated
- Nov 15, 2006
- Record last updated
- Jan 10, 2022
- Medicaid ID
- 00G774590 CA
- Medicare enrollment
- Enrolled (PECOS I20110126000665); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 1992
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 260 International Cir
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ruma Kumar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G77459Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average hospitalist physician in 2024
78 Medicare Part D claims for 35 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of 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.
Bills Medicare through one group practice
- Permanente Medical Group IncSan Jose, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ruma Kumar among 3,099 hospitalist physician records in California
Ruma Kumar, MD is one of 3,099 hospitalist physician records with a practice address in California. 90% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 73% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated1992 · median 2010 among the 2,505 with a school on file
- Record last updated2022 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in San Jose → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Zineb Benmayouf, MDSan Jose, CA 951191730265257
- Junghae Choi, MDSan Jose, CA 951191952487480
- John Clausen, MDSan Jose, CA 951191942386461
- Kelly Crawford, MDSan Jose, CA 951191134205644
- Rose Dao, MDSan Jose, CA 951191639255144
- Trupti Kapadia, MDSan Jose, CA 951191043396575
- Subbu Lakshmi, MDSan Jose, CA 951191336225853
- Jeffrey Lou, MDSan Jose, CA 951191932285442
Common questions
What is Ruma Kumar, MD's NPI number?
Ruma Kumar, MD's National Provider Identifier (NPI) is 1578635322, issued on Nov 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ruma Kumar, MD located?
The NPPES record lists a practice address at 260 International Cir, San Jose, CA, 95119. Phone: (408) 972-7000. Providers update this record themselves, so call before visiting.
How can I verify Ruma Kumar, MD's license?
NPPES lists California license number G77459, 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 Ruma Kumar, MD prescribe under Medicare Part D?
In 2024, Ruma Kumar, MD had 78 Medicare Part D claims for 35 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
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.