NPPES file of Aug 9, 2026

Alfred Euaik Tan, M.D.

Family Medicine Physician · San Ramon, CA

Alfred Euaik Tan, M.D. is a family medicine physician with a practice address in San Ramon, California, and NPI 1962465955, issued on Apr 10, 2006. Check the license (California G48933, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1962465955
Name
Alfred Euaik Tan
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
G48933 CA
Self-reported in NPPES; status is on the state search
Practice location
11030 Bollinger Canyon RD, San Ramon, CA 94582
Phone
(925) 736-2200
Enumerated
Apr 10, 2006
Record last updated
May 20, 2012 (not updated in 14 years: call before relying on the address or phone)
Fax
(925) 736-6100
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 11030 Bollinger Canyon RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Erik Gracer, MDFamily Medicine Physician1457447898
  2. Joseph Mardanzai, MDInternal Medicine Physician1043220031
  3. Joanne Vogel, M.D.Hospitalist Physician1396794509

Verify Alfred Euaik Tan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G48933
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Alfred Euaik Tan among 17,133 family medicine physician records in California

Alfred Euaik Tan, M.D. is one of 17,133 family 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 not. Its NPI, issued in 2006, is newer than 6% of them.

  • NPI issued2006 · 6% of these records are older, 59% newer
  • In a Medicare fileNo · 81% of these records are
  • In the CMS Doctors and Clinicians fileNo · 62% of these records are
  • Record last updated2012 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

34 family medicine physician records list a practice address in San Ramon

They are 34 of the 2,281 NPPES records with a practice address in San Ramon, and 17,133 family medicine physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

The 8 family medicine physician records with the nearest ZIP codes

  1. Rica Canio, MDSan Ramon, CA 945821669058194
  2. Seng Yue Joshua Foong, DOSan Ramon, CA 945821922453133
  3. Erik Gracer, MDSan Ramon, CA 945821457447898
  4. Bradford Flagg, M.D.San Ramon, CA 945831346323086
  5. Ralph Fong, M.D.San Ramon, CA 945831447290994
  6. Ethan Hollander, M.D.San Ramon, CA 945831528003597
  7. Marjan Naraghi-Arani, D.O.San Ramon, CA 945831821187881
  8. Jolanta Omski, MDSan Ramon, CA 945831881635688

Common questions

What is Alfred Euaik Tan, M.D.'s NPI number?

Alfred Euaik Tan, M.D.'s National Provider Identifier (NPI) is 1962465955, issued on Apr 10, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Alfred Euaik Tan, M.D. located?

The NPPES record lists a practice address at 11030 Bollinger Canyon RD, San Ramon, CA, 94582. Phone: (925) 736-2200. Providers update this record themselves, so call before visiting.

How can I verify Alfred Euaik Tan, M.D.'s license?

NPPES lists California license number G48933, 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. 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.