Yong-Yong Tam, M.D.
Emergency Medicine Physician · Alameda, CA
Yong-Yong Tam, M.D. is an emergency medicine physician with a practice address in Alameda, California, and NPI 1831150853, issued on Mar 29, 2006. Check the license (California G34363, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Yong-Yong Tam
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- G34363 CA
41264 MA
Self-reported in NPPES; status is on the state search - Practice location
- 2070 Clinton Ave, Alameda, CA 94501
- Phone
- (510) 482-0558
- Enumerated
- Mar 29, 2006
- Record last updated
- Jan 12, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20040521000971); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 1976
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 2070 Clinton Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jorge Aceves, M.D.Emergency Medicine Physician1801321229
- Nerissa Barreto, N.P.Family Nurse Practitioner1962824532
- David Belk, M.D.Internal Medicine Physician1386654366
- Lorraine Bonner, M.D.Internal Medicine Physician1033188149
- Robert Brooks, MDAnesthesiology Physician1386651750
- Garland Castaneda, MDInternal Medicine Physician1740676881
Verify Yong-Yong Tam in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G34363Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
50% fewer Medicare Part D claims than the average emergency medicine physician in 2024
112 Medicare Part D claims for 71 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Cephalexin14 claims
- Naproxen12 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 practice group's MIPS final score for 2023 (Medicare payment program): 94.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Alameda Health SystemOakland, CA
- Cep America - CaliforniaAntioch, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Yong-Yong Tam among 7,751 emergency medicine physician records in California
Yong-Yong Tam, M.D. is one of 7,751 emergency medicine physician records with a practice address in California. 81% 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, 60% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1976 · median 2011 among the 4,560 with a school on file
- Record last updated2018 · 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 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Alameda → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Jorge Aceves, M.D.Alameda, CA 945011801321229
- Jordan Cohen, M.D.Alameda, CA 945011477575520
- Arthur Glaser, M.D.Alameda, CA 945011285745539
- Sammy Hodroge, MDAlameda, CA 945011669891503
- Leif Johnson, M.D.Alameda, CA 945011851314611
- Joshua Kim, D.O.Alameda, CA 945011972036697
- Edward Lee, MDAlameda, CA 945011427039288
- Antonio Muto-Isolani, MDAlameda, CA 945011003836594
Common questions
What is Yong-Yong Tam, M.D.'s NPI number?
Yong-Yong Tam, M.D.'s National Provider Identifier (NPI) is 1831150853, issued on Mar 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Yong-Yong Tam, M.D. located?
The NPPES record lists a practice address at 2070 Clinton Ave, Alameda, CA, 94501. Phone: (510) 482-0558. Providers update this record themselves, so call before visiting.
How can I verify Yong-Yong Tam, M.D.'s license?
NPPES lists California license number G34363, 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 Yong-Yong Tam, M.D. prescribe under Medicare Part D?
In 2024, Yong-Yong Tam, M.D. had 112 Medicare Part D claims for 71 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Yong-Yong Tam, M.D.'s MIPS final score?
The 2023 MIPS final score is 94.6 of 100, reported for the practice group. 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.