Nghia Thanh Phan, D.O.
Family Medicine Physician · Pomona, CA
Nghia Thanh Phan, D.O. is a family medicine physician with a practice address in Pomona, California, and NPI 1164415535, issued on Aug 31, 2005. Check the license (California 20A10219, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nghia Thanh Phan
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A10219 CA
Self-reported in NPPES; status is on the state search - Practice location
- 795 E 2ND St Ste 5, Pomona, CA 91766
- Phone
- (909) 865-2565
- Enumerated
- Aug 31, 2005
- Record last updated
- Feb 6, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (909) 865-2955
- Medicare enrollment
- Enrolled (PECOS I20140429001538); accepts Medicare assignment
- Medical or professional school
- New York College Of Osteo Medicine Of New York Institute Of Technology, 2000
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 795 E 2ND St Ste 5
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mindy Chilman, D.O.Neuromusculoskeletal Medicine & OMM Physician1366888448
- Parvaneh Darvish, P.A.-CPhysician Assistant1295946697
- Cynthia Hoang, PA-CPhysician Assistant1245548874
- Nishita Patel, MDInfectious Disease Physician1881691269
- Yvonne Yang, DONeuromusculoskeletal Medicine & OMM Physician1518457878
- Jose ZamoraPharmacist1003698382
Verify Nghia Thanh Phan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A10219Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
41% fewer Medicare Part D claims than the average family medicine physician in 2024
2,080 Medicare Part D claims for 275 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 62 claims were for opioids.
Most prescribed
- Atorvastatin Calcium153 claims
- Lisinopril95 claims
- Gabapentin91 claims
- Metformin Hcl83 claims
- Losartan Potassium69 claims
- Amlodipine Besylate66 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: $166.13
3 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. The 55,478 providers of this specialty with any payment received $902.55 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
- Western University OF Health SciencesPomona, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nghia Thanh Phan among 17,133 family medicine physician records in California
Nghia Thanh Phan, D.O. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2000 · median 2005 among the 10,652 with a school on file
- Record last updated2015 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
78 family medicine physician records list a practice address in Pomona
They are 78 of the 5,102 NPPES records with a practice address in Pomona, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Pomona → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Rajivinder Brar, D.O., PH.D.Pomona, CA 917661629039664
- Alan Cundari, DOPomona, CA 917661477542215
- Raymond Hruby, D.O.Pomona, CA 917661366573453
- Lawrence Li, PA-CPomona, CA 917661306889621
- Felix Lin, D.O.Pomona, CA 917661073814760
- Susan Mackintosh, D.O.Pomona, CA 917661073594131
- Asheesh Pasi, MDPomona, CA 917661982750287
- Dat Trinh, DOPomona, CA 917661245252071
Common questions
What is Nghia Thanh Phan, D.O.'s NPI number?
Nghia Thanh Phan, D.O.'s National Provider Identifier (NPI) is 1164415535, issued on Aug 31, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Nghia Thanh Phan, D.O. located?
The NPPES record lists a practice address at 795 E 2ND St Ste 5, Pomona, CA, 91766. Phone: (909) 865-2565. Providers update this record themselves, so call before visiting.
How can I verify Nghia Thanh Phan, D.O.'s license?
NPPES lists California license number 20A10219, 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 Nghia Thanh Phan, D.O. prescribe under Medicare Part D?
In 2024, Nghia Thanh Phan, D.O. had 2,080 Medicare Part D claims for 275 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.