Theresa Nguyen Tran, NP-C
Family Nurse Practitioner · Tustin, CA
Theresa Nguyen Tran, NP-C is a family nurse practitioner with a practice address in Tustin, California, and NPI 1568939833, issued on Oct 25, 2018. Check the license (California NP95010331, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Theresa Nguyen Tran
- Credential
- NP-C
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- NP95010331 CA
Self-reported in NPPES; status is on the state search - Practice location
- 661 W 1St St Ste G, Tustin, CA 92780
- Phone
- (714) 665-9890
- Enumerated
- Oct 25, 2018
- Record last updated
- Oct 23, 2025
- Fax
- (714) 665-9891
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 16,966 in California → Look up another NPI →
Also registered at 661 W 1St St Ste G
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marlie Abrahams, PA-CPhysician Assistant1639409048
- Denise Aquino, PA-CPhysician Assistant1750988671
- Bernard Bennett, MDInternal Medicine Physician1871568899
- Viktoriya Birger, NP-CFamily Nurse Practitioner1720853153
- Heather Bonnville, PHYSICIAN ASSISTANTPhysician Assistant1770762429
- Robert Borrowdale, M.D.Obstetrics & Gynecology Physician1013958545
Verify Theresa Nguyen Tran in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license NP95010331Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
43% more Medicare Part D claims than the average family nurse practitioner in 2024
1,872 Medicare Part D claims for 256 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Atorvastatin Calcium128 claims
- Fluticasone Propionate125 claims
- Amlodipine Besylate97 claims
- Metformin Hcl74 claims
- Gabapentin63 claims
- Losartan Potassium63 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.
Theresa Nguyen Tran among 16,966 family nurse practitioner records in California
Theresa Nguyen Tran, NP-C is one of 16,966 family nurse practitioner records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 45% of them.
- NPI issued2018 · 45% of these records are older, 50% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 40% of these records are
- Record last updated2025 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
56 family nurse practitioner records list a practice address in Tustin
They are 56 of the 2,221 NPPES records with a practice address in Tustin, and 16,966 family nurse practitioner records in California.
All 16,966 in California → Every provider in Tustin → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Cynthia Cohen, RN,FNP-CTustin, CA 927801902891252
- Sol Estrella, FNP-BCTustin, CA 927801265976021
- Amanda Imai, NPTustin, CA 927801508195231
- Bernice Jacob, FNPTustin, CA 927801215472949
- Sharron Krueger, RNPTustin, CA 927801851684237
- Holly Leo, NPTustin, CA 927801467663666
- Julie Lopes, RN, NPTustin, CA 927801821358979
- Rema Nair, NPTustin, CA 927801881081966
Common questions
What is Theresa Nguyen Tran, NP-C's NPI number?
Theresa Nguyen Tran, NP-C's National Provider Identifier (NPI) is 1568939833, issued on Oct 25, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Theresa Nguyen Tran, NP-C located?
The NPPES record lists a practice address at 661 W 1St St Ste G, Tustin, CA, 92780. Phone: (714) 665-9890. Providers update this record themselves, so call before visiting.
How can I verify Theresa Nguyen Tran, NP-C's license?
NPPES lists California license number NP95010331, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Theresa Nguyen Tran, NP-C prescribe under Medicare Part D?
In 2024, Theresa Nguyen Tran, NP-C had 1,872 Medicare Part D claims for 256 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.