James K. Tam, M.D.
Internal Medicine Physician · Long Beach, CA
James K. Tam, M.D. is an internal medicine physician with a practice address in Long Beach, California, and NPI 1629215520, issued on Jan 14, 2009. Check the license (California A106111, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- James K. Tam
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A106111 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2699 Atlantic Ave, Long Beach, CA 90806
- Phone
- (562) 426-3333
- Enumerated
- Jan 14, 2009
- Record last updated
- Sep 26, 2023
- Medicare enrollment
- Enrolled (PECOS I20101013000758); accepts Medicare assignment
- Medical or professional school
- University Of California, Irvine, California College Of Medicine, 2007
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 2699 Atlantic Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Renuka Boyapalli, MDEndocrinology, Diabetes & Metabolism Physician1558399311
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- Jeffrey Chwa, DORheumatology Physician1285989236
- Anthony Chyou, M. D.Interventional Cardiology Physician1457592073
Verify James K. Tam in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A106111Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,125 Medicare Part D claims for 338 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 43% of claims.
Most prescribed
- Levothyroxine Sodium112 claims
- Glipizide73 claims
- Insulin Glargine-Yfgn63 claims
- Metformin Hcl62 claims
- Humalog Kwikpen U-10054 claims
- Metformin Hcl Er49 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
- Southern California Permanente Medical GroupBellflower, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James K. Tam among 17,696 internal medicine physician records in California
James K. Tam, M.D. is one of 17,696 internal medicine 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 2009, is newer than 60% of them.
- NPI issued2009 · 60% of these records are older, 37% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2007 · median 2004 among the 11,065 with a school on file
- Record last updated2023 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
221 internal medicine physician records list a practice address in Long Beach
They are 221 of the 13,650 NPPES records with a practice address in Long Beach, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Long Beach → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- John Adams, D.O.Long Beach, CA 908061801852900
- Mark Asbill, M.D.Long Beach, CA 908061558310896
- Alla Gartsman, M.D.Long Beach, CA 908061457317133
- Sabrina Harper, MDLong Beach, CA 908061023081924
- Richard Im, MDLong Beach, CA 908061972586840
- Tina Kitajima, M.D.Long Beach, CA 908061033164892
- Angela Lamotte, M.D.Long Beach, CA 908061538166764
- Raymond Lee, M.D.Long Beach, CA 908061295790277
Common questions
What is James K. Tam, M.D.'s NPI number?
James K. Tam, M.D.'s National Provider Identifier (NPI) is 1629215520, issued on Jan 14, 2009. An NPI identifies a provider in billing; it is not a license.
Where is James K. Tam, M.D. located?
The NPPES record lists a practice address at 2699 Atlantic Ave, Long Beach, CA, 90806. Phone: (562) 426-3333. Providers update this record themselves, so call before visiting.
How can I verify James K. Tam, M.D.'s license?
NPPES lists California license number A106111, 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 James K. Tam, M.D. prescribe under Medicare Part D?
In 2024, James K. Tam, M.D. had 1,125 Medicare Part D claims for 338 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.