Giulianna Nguyen, M.D.
Internal Medicine Physician · Torrance, CA
Giulianna Nguyen, M.D. is an internal medicine physician with a practice address in Torrance, California, and NPI 1538302815, issued on Apr 15, 2009. Check the license (California A113985, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Giulianna Nguyen
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A113985 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2200 Sepulveda Blvd, Torrance, CA 90501
- Phone
- (310) 326-9167
- Enumerated
- Apr 15, 2009
- Record last updated
- Jan 4, 2026
- Medicare enrollment
- Enrolled (PECOS I20151209000663); accepts Medicare assignment
- 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 2200 Sepulveda Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brian Borsook, M.D.Family Medicine Physician1437165370
- Nasim Golzar, M.D.Family Medicine Physician1568406866
- Alese HernandezPrimary Care Nurse Practitioner1164039012
- Susana Herrera Ovalle, M.D.Family Medicine Physician1437375268
- Fe Inocentes, M.D.Family Medicine Physician1851306542
- John Lim, MDInternal Medicine Physician1316329782
Verify Giulianna Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A113985Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
11% more Medicare Part D claims than the average internal medicine physician in 2024
3,516 Medicare Part D claims for 312 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 54 claims were for opioids.
Most prescribed
- Atorvastatin Calcium375 claims
- Rosuvastatin Calcium189 claims
- Amlodipine Besylate181 claims
- Levothyroxine Sodium160 claims
- Losartan Potassium158 claims
- Gabapentin114 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 one group practice
- Healthcare Partners Affiliates Medical GroupTorrance, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Giulianna Nguyen among 17,696 internal medicine physician records in California
Giulianna Nguyen, M.D. 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 2009, is newer than 60% of them.
- NPI issued2009 · 60% of these records are older, 37% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2009 · median 2004 among the 11,065 with a school on file
- Record last updated2026 · 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).
231 internal medicine physician records list a practice address in Torrance
They are 231 of the 8,901 NPPES records with a practice address in Torrance, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Torrance → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Richard Butlig, MDTorrance, CA 905011912968447
- Elva Dreisbach, MDTorrance, CA 905011952377913
- Michelle Falcon, MDTorrance, CA 905011053381228
- John Lim, MDTorrance, CA 905011316329782
- James Powell, MDTorrance, CA 905011467466581
- Akiko Suzuki, M.D.Torrance, CA 905011831108323
- Peter Barrett, M.D.Torrance, CA 905021568441954
- Brian Chow, MDTorrance, CA 905021972716223
Common questions
What is Giulianna Nguyen, M.D.'s NPI number?
Giulianna Nguyen, M.D.'s National Provider Identifier (NPI) is 1538302815, issued on Apr 15, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Giulianna Nguyen, M.D. located?
The NPPES record lists a practice address at 2200 Sepulveda Blvd, Torrance, CA, 90501. Phone: (310) 326-9167. Providers update this record themselves, so call before visiting.
How can I verify Giulianna Nguyen, M.D.'s license?
NPPES lists California license number A113985, 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 Giulianna Nguyen, M.D. prescribe under Medicare Part D?
In 2024, Giulianna Nguyen, M.D. had 3,516 Medicare Part D claims for 312 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.