Hiep Duy Nguyen, MD
Internal Medicine Physician · Berkeley, CA
Hiep Duy Nguyen, MD is an internal medicine physician with a practice address in Berkeley, California, and NPI 1588612881, issued on May 5, 2006. Check the license (California A73583, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Hiep Duy Nguyen
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A73583 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1510 4TH St, Berkeley, CA 94710
- Phone
- (510) 525-8980
- Enumerated
- May 5, 2006
- Record last updated
- Jul 9, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (510) 525-8982
- Medicaid ID
- 00A735830 CA
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 1510 4TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Virgilio Baluyut, NPNurse Practitioner1548605587
- Madeline Chow, NPGerontology Nurse Practitioner1023031655
- Christina Garza, M.D.Internal Medicine Physician1942598289
- Dawn Groten, MDGeriatric Medicine (Internal Medicine) Physician1407880693
- Else Jensen, M.D.Internal Medicine Physician1790754885
- Naresh Joshi, M.D.Hospitalist Physician1457710998
Verify Hiep Duy Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A73583Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average internal medicine physician in 2024
190 Medicare Part D claims for 18 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Enoxaparin Sodium16 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: $14.37
1 payment: food and beverage; the largest payer was Novo Nordisk 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.
Hiep Duy Nguyen among 17,696 internal medicine physician records in California
Hiep Duy Nguyen, MD 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2008 · 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
- Christina Garza, M.D.Berkeley, CA 947101942598289
- Else Jensen, M.D.Berkeley, CA 947101790754885
- Anna Levin-Shohat, D.O.Berkeley, CA 947101346407491
- Ann Nguyen-Traxler, M.D.Berkeley, CA 947101376770933
- Payam Parvinchiha, M.D.Berkeley, CA 947101851690622
- Maria Rojas D'Croz, M.D.Berkeley, CA 947101659503290
- Hideyuki Sakata, M.D.Berkeley, CA 947101417905126
- Ranjana Saxena, M.D.Berkeley, CA 947101770552721
Common questions
What is Hiep Duy Nguyen, MD's NPI number?
Hiep Duy Nguyen, MD's National Provider Identifier (NPI) is 1588612881, issued on May 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Hiep Duy Nguyen, MD located?
The NPPES record lists a practice address at 1510 4TH St, Berkeley, CA, 94710. Phone: (510) 525-8980. Providers update this record themselves, so call before visiting.
How can I verify Hiep Duy Nguyen, MD's license?
NPPES lists California license number A73583, 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 Hiep Duy Nguyen, MD prescribe under Medicare Part D?
In 2024, Hiep Duy Nguyen, MD had 190 Medicare Part D claims for 18 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.