NPPES file of Aug 9, 2026

Caroline Phuong Trinh Nguyen

Student in an Organized Health Care Education/Training Program · San Francisco, CA

Caroline Phuong Trinh Nguyen is a student in an organized health care education/training program with a practice address in San Francisco, California, and NPI 1275093106, issued on Mar 25, 2019. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1275093106
Name
Caroline Phuong Trinh Nguyen
Primary taxonomy
Student in an Organized Health Care Education/Training Program 390200000X
Practice location
1545 Divisadero St, San Francisco, CA 94143
Phone
(415) 353-7900
Enumerated
Mar 25, 2019
Record last updated
Sep 5, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20240913003739); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1545 Divisadero St

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

  1. Maki Aoki, MD, NDInternal Medicine Physician1093755498
  2. Elisabeth Askin, M.D.Internal Medicine Physician1043639503
  3. Rebecca Berman, M.D.Internal Medicine Physician1770633661
  4. Selena Chan, D.O.Psychiatry Physician1467795245
  5. Mike Cheng, M.D.Internal Medicine Physician1144679846
  6. Melissa ChiangInternal Medicine Physician1609339159

Verify Caroline Phuong Trinh Nguyen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this professionCheck 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
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45% more Medicare Part D claims than the average student in an organized health care education/training program in 2024

269 Medicare Part D claims for 103 beneficiaries, against an average of 185 among the 59,748 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 23 claims were for opioids.

  1. Caroline Nguyen269
  2. Specialty average185

Most prescribed

  1. Hydrocodone-Acetaminophen13 claims
  2. Atorvastatin Calcium12 claims
  3. Rosuvastatin Calcium12 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.

Bills Medicare through 2 group practices

  1. Ucsf Medical Group Business ServicesBerkeley, CA
  2. University OF California San FranciscoSan Francisco, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Caroline Phuong Trinh Nguyen among 40,652 student in an organized health care education/training program records in California

Caroline Phuong Trinh Nguyen is one of 40,652 student in an organized health care education/training program records with a practice address in California. 16% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 20% of them.

  • NPI issued2019 · 20% of these records are older, 76% newer
  • In a Medicare fileYes · 16% of these records are
  • In the CMS Doctors and Clinicians fileYes · 6% of these records are
  • Graduated2019 · median 2017 among the 2,409 with a school on file
  • Record last updated2021 · 26% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 390200000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

3,035 student in an organized health care education/training program records list a practice address in San Francisco

They are 3,035 of the 38,143 NPPES records with a practice address in San Francisco, and 40,652 student in an organized health care education/training program records in California.

The 8 student in an organized health care education/training program records with the nearest ZIP codes

  1. Andrew Bellinger, M.D., PH.D.San Francisco, CA 941431831327402
  2. Molly Burnett, MDSan Francisco, CA 941431619107638
  3. Sheila Chan, M.D.San Francisco, CA 941431487895793
  4. Fred Chen, M.D.San Francisco, CA 941431932390325
  5. Jeffrey Ghassemi, M.D., M.P.H.San Francisco, CA 941431972746253
  6. Vasantha Jotwani, M.D.San Francisco, CA 941431043448996
  7. Vy-Van Le, MDSan Francisco, CA 941431265661136
  8. Katherine Naidu, M.D.San Francisco, CA 941431265668115

Common questions

What is Caroline Phuong Trinh Nguyen's NPI number?

Caroline Phuong Trinh Nguyen's National Provider Identifier (NPI) is 1275093106, issued on Mar 25, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Caroline Phuong Trinh Nguyen located?

The NPPES record lists a practice address at 1545 Divisadero St, San Francisco, CA, 94143. Phone: (415) 353-7900. Providers update this record themselves, so call before visiting.

How can I verify Caroline Phuong Trinh Nguyen's license?

Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Caroline Phuong Trinh Nguyen prescribe under Medicare Part D?

In 2024, Caroline Phuong Trinh Nguyen had 269 Medicare Part D claims for 103 beneficiaries; the average among student in an organized health care education/training program prescribers was 185. 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.