Caroline T. Nguyen, M.D.
Endocrinology, Diabetes & Metabolism Physician · Los Angeles, CA
Caroline T. Nguyen, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Los Angeles, California, and NPI 1528388337, issued on Jun 3, 2010. Check the license (California A120689, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Caroline T. Nguyen
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- A120689 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1520 San Pablo Street, Los Angeles, CA 90033
- Phone
- (323) 442-5100
- Enumerated
- Jun 3, 2010
- Record last updated
- Oct 12, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20150731017129); accepts Medicare assignment
- Medical or professional school
- University Of California, Davis School Of Medicine, 2010
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 1520 San Pablo Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Deirdre Anglin, MDEmergency Medicine Physician1306932025
- Saurabh Ashier, PA-CSurgical Physician Assistant1235340811
- Selena Brewer, NPNurse Practitioner1710157490
- Danielle Feigenbaum, M.D.Neurology Physician1558621904
- Parkash Gill, M.D.Hematology (Internal Medicine) Physician1609972983
- Thomas Hicklin, MDPsychiatry Physician1548284383
Verify Caroline T. Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A120689Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
704 Medicare Part D claims for 123 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 38% of claims.
Most prescribed
- Levothyroxine Sodium110 claims
- Metformin Hcl54 claims
- Synthroid47 claims
- Jardiance33 claims
- Atorvastatin Calcium30 claims
- Nano 2nd Gen Pen Needle29 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: $21.69
1 payment: food and beverage; the largest payer was Abbott Laboratories. The 5,661 providers of this specialty with any payment received $5,742.15 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
- Usc Care Medical Group IncLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in California
There are 1,131 endocrinology, diabetes & metabolism physician records in California.
Other endocrinology, diabetes & metabolism physician records in California
- Evan Abel, MDSanta Monica, CA1619067238
- Anita Abraham, M.D.Stockton, CA1558380337
- Sallie Adams, M.D.Roseville, CA1255342085
- Helen Adelberg, M.D.Encino, CA1093935447
- Yewande Adepoju, DOOroville, CA1467892984
- David Aftergood, MDBeverly Hills, CA1639259328
- Nidhi Agarwal, MDTorrance, CA1518387125
- Bahar Aghighi, MDSanta Cruz, CA1770562134
- Tyler Aguinaldo, MDBurlingame, CA1306811906
- Susan Ahern, D.O.Ventura, CA1508156597
Common questions
What is Caroline T. Nguyen, M.D.'s NPI number?
Caroline T. Nguyen, M.D.'s National Provider Identifier (NPI) is 1528388337, issued on Jun 3, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Caroline T. Nguyen, M.D. located?
The NPPES record lists a practice address at 1520 San Pablo Street, Los Angeles, CA, 90033. Phone: (323) 442-5100. Providers update this record themselves, so call before visiting.
How can I verify Caroline T. Nguyen, M.D.'s license?
NPPES lists California license number A120689, 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 Caroline T. Nguyen, M.D. prescribe under Medicare Part D?
In 2024, Caroline T. Nguyen, M.D. had 704 Medicare Part D claims for 123 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.