Andrew Chuong Phan, M.D.
Rheumatology Physician · Orange, CA
Andrew Chuong Phan, M.D. is a rheumatology physician with a practice address in Orange, California, and NPI 1710164736, issued on Jan 22, 2008. Check the license (California A102518, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Andrew Chuong Phan
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License numbers
- A102518 CA
38860 IA
Self-reported in NPPES; status is on the state search - Practice location
- 2501 E Chapman Ave, Orange, CA 92869
- Phone
- (714) 628-3322
- Enumerated
- Jan 22, 2008
- Record last updated
- Nov 9, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (714) 633-7403
- Medicare enrollment
- Enrolled (PECOS I20090911000307); accepts Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 2006
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 926 in California → Look up another NPI →
Also registered at 2501 E Chapman Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sonja Abbassi, M.D.Internal Medicine Physician1225426851
- Anwar Abdelhadi, M.D.Hospitalist Physician1093784191
- Aladean Abdrabbo, M.D.Internal Medicine Physician1578905675
- Saif Al Yaseen, M.D.Internal Medicine Physician1356684096
- Nicole Awad, M.D.Family Medicine Physician1295821189
- Albert Bach, PHARM.D.Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1922355742
Verify Andrew Chuong Phan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A102518Check 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% fewer Medicare Part D claims than the average rheumatology physician in 2024
1,769 Medicare Part D claims for 387 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D.
Most prescribed
- Hydroxychloroquine Sulfate330 claims
- Methotrexate226 claims
- Prednisone149 claims
- Alendronate Sodium140 claims
- Leflunomide120 claims
- Gabapentin115 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: $1,747.10
75 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Biotech, Inc. The 4,486 providers of this specialty with any payment received $8,538.33 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
- Providence Medical FoundationTustin, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Andrew Chuong Phan among 926 rheumatology physician records in California
Andrew Chuong Phan, M.D. is one of 926 rheumatology 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 2008, is newer than 58% of them.
- NPI issued2008 · 58% of these records are older, 37% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2006 · median 2003 among the 641 with a school on file
- Record last updated2021 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in California
There are 926 rheumatology physician records in California.
All 926 in California → Every provider in Orange → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Mehrnaz Hojjati, M. D.Orange, CA 928691720029135
- Bao Quynh Huynh, M.D.Orange, CA 928691538313648
- Brian S Andrews, MDOrange, CA 928681609970292
- Tun Tun Aung, DOOrange, CA 928681922676824
- Caroline BuiOrange, CA 928681821626482
- Ian Chang, D.O.Orange, CA 928681407116411
- Neha ChaurasiaOrange, CA 928681457980211
- Michael Cheng, DOOrange, CA 928681003109513
Common questions
What is Andrew Chuong Phan, M.D.'s NPI number?
Andrew Chuong Phan, M.D.'s National Provider Identifier (NPI) is 1710164736, issued on Jan 22, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Andrew Chuong Phan, M.D. located?
The NPPES record lists a practice address at 2501 E Chapman Ave, Orange, CA, 92869. Phone: (714) 628-3322. Providers update this record themselves, so call before visiting.
How can I verify Andrew Chuong Phan, M.D.'s license?
NPPES lists California license number A102518, 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 Andrew Chuong Phan, M.D. prescribe under Medicare Part D?
In 2024, Andrew Chuong Phan, M.D. had 1,769 Medicare Part D claims for 387 beneficiaries; the average among rheumatology physician prescribers was 1,978. 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.