Than Nguyen, D.O.
Internal Medicine Physician · Berkeley, CA
Than Nguyen, D.O. is an internal medicine physician with a practice address in Berkeley, California, and NPI 1316207236, issued on May 24, 2012. Check the license (California 20A15824, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Than Nguyen
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 20A15824 CA
L2226995 MI
Self-reported in NPPES; status is on the state search - Practice location
- 2850 Telegraph Ave Ste 130, Berkeley, CA 94705
- Phone
- (510) 204-8120
- Enumerated
- May 24, 2012
- Record last updated
- Nov 20, 2025
- Fax
- (510) 506-7721
- Medicare enrollment
- Enrolled (PECOS I20190122000929); accepts Medicare assignment
- Medical or professional school
- Lake Erie College Of Osteopathic Medicine, Erie, 2012
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 2850 Telegraph Ave Ste 130
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shannon McCune, M.D.Family Medicine Physician1437236163
- Stephanie Petreas, RN, FNPFamily Nurse Practitioner1558505560
Verify Than Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A15824Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% fewer Medicare Part D claims than the average internal medicine physician in 2024
982 Medicare Part D claims for 527 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Gavilyte-C368 claims
- Pantoprazole Sodium153 claims
- Omeprazole87 claims
- Famotidine35 claims
- Mesalamine33 claims
- Cholestyramine31 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.
Industry payments in 2024: $181.72
2 payments; by number, the most common kind was food and beverage; the largest payer was Biosense Webster, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Bills Medicare through 2 group practices
- Permanente Medical Group IncVacaville, CA
- Sutter Bay Medical FoundationCastro Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Than Nguyen among 17,696 internal medicine physician records in California
Than Nguyen, D.O. 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 2012, is newer than 68% of them.
- NPI issued2012 · 68% of these records are older, 29% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2012 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 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).
83 internal medicine physician records list a practice address in Berkeley
They are 83 of the 4,898 NPPES records with a practice address in Berkeley, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Berkeley → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Denise Davis, M.D.Berkeley, CA 947051851311245
- Deborah Demott, M.D.Berkeley, CA 947051124040084
- Kathryn Drinkard, MDBerkeley, CA 947051487740437
- Nicola Hanchock, M.D.Berkeley, CA 947051518074830
- Jonathan Hollander, MDBerkeley, CA 947051457463440
- Carolyn Klebanoff, MDBerkeley, CA 947051093892846
- Elizabeth Mahler, M.D.Berkeley, CA 947051972611192
- David Morris, MDBerkeley, CA 947051942283015
Common questions
What is Than Nguyen, D.O.'s NPI number?
Than Nguyen, D.O.'s National Provider Identifier (NPI) is 1316207236, issued on May 24, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Than Nguyen, D.O. located?
The NPPES record lists a practice address at 2850 Telegraph Ave Ste 130, Berkeley, CA, 94705. Phone: (510) 204-8120. Providers update this record themselves, so call before visiting.
How can I verify Than Nguyen, D.O.'s license?
NPPES lists California license number 20A15824, 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 Than Nguyen, D.O. prescribe under Medicare Part D?
In 2024, Than Nguyen, D.O. had 982 Medicare Part D claims for 527 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.