Susan T. Nguyen, MD
Internal Medicine Physician · San Francisco, CA
Susan T. Nguyen, MD is an internal medicine physician with a practice address in San Francisco, California, and NPI 1164470696, issued on May 5, 2006. Check the license (California A65791, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Susan T. Nguyen
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A65791 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1770 Post Street Suite 324, San Francisco, CA 94115
- Phone
- (650) 455-1363
- Enumerated
- May 5, 2006
- Record last updated
- Apr 17, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicaid ID
- GR0045150 CA
- Medicare enrollment
- Enrolled (PECOS I20040629001316); accepts Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 1996
- Entity
- Type 1 · individual
Verify Susan T. Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A65791Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
32% more Medicare Part D claims than the average internal medicine physician in 2024
4,180 Medicare Part D claims for 262 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 175 claims were for opioids.
Most prescribed
- Atorvastatin Calcium203 claims
- Levothyroxine Sodium164 claims
- Gabapentin159 claims
- Eliquis156 claims
- Furosemide152 claims
- Potassium Chloride83 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 MIPS final score for 2023 (Medicare payment program): 85.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $103.93
1 payment: food and beverage; the largest payer was Convergent Dental 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 one group practice
- Galen Inpatient Physicians PCGreenbrae, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
1,318 internal medicine physician records list a practice address in San Francisco
They are 1,318 of the 38,143 NPPES records with a practice address in San Francisco, and 17,696 internal medicine physician records in California.
All 1,318 in San Francisco → All 17,696 in California → Every provider in San Francisco →
Other internal medicine physician records in California
- Jacob Aaron, MDSan Francisco, CA1407202518
- Alistair Aaronson, MDStanford, CA1457628760
- Jose Abad., MDSacramento, CA1144607219
- Donna Abare, MDOakland, CA1386722155
- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Susan T. Nguyen, MD's NPI number?
Susan T. Nguyen, MD's National Provider Identifier (NPI) is 1164470696, issued on May 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Susan T. Nguyen, MD located?
The NPPES record lists a practice address at 1770 Post Street Suite 324, San Francisco, CA, 94115. Phone: (650) 455-1363. Providers update this record themselves, so call before visiting.
How can I verify Susan T. Nguyen, MD's license?
NPPES lists California license number A65791, 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 Susan T. Nguyen, MD prescribe under Medicare Part D?
In 2024, Susan T. Nguyen, MD had 4,180 Medicare Part D claims for 262 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Susan T. Nguyen, MD's MIPS final score?
The 2023 MIPS final score is 85.6 of 100. 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.