Duy Phan, DO
Hospitalist Physician · Riverside, CA
Duy Phan, DO is a hospitalist physician with a practice address in Riverside, California, and NPI 1184243123, issued on Apr 9, 2020. Check the license (California 20A20750, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Duy Phan
- Credential
- DO
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 20A20750 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10800 Magnolia Ave, Riverside, CA 92505
- Phone
- (833) 574-2273
- Enumerated
- Apr 9, 2020
- Record last updated
- Mar 8, 2024
- Medicare enrollment
- Enrolled (PECOS I20240215003089); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 10800 Magnolia Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Alfredo Aguiar, PAPhysician Assistant1043368970
- Michael Aguinaldo, M.D.Pediatrics Physician1851531487
- Maria Aguirre, MDPediatrics Physician1295806255
Verify Duy Phan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A20750Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4% more Medicare Part D claims than the average hospitalist physician in 2024
543 Medicare Part D claims for 202 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. 26 claims were for opioids.
Most prescribed
- Cefpodoxime Proxetil30 claims
- Prednisone29 claims
- Atorvastatin Calcium27 claims
- Furosemide24 claims
- Ciprofloxacin Hcl23 claims
- Azithromycin22 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
- Southern California Permanente Medical GroupRiverside, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Duy Phan among 3,099 hospitalist physician records in California
Duy Phan, DO is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 85% of them.
- NPI issued2020 · 85% of these records are older, 10% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2020 · median 2010 among the 2,505 with a school on file
- Record last updated2024 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Riverside → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Charles Abreu, MDRiverside, CA 925051942837323
- Shree Krishnan, MDRiverside, CA 925051881628212
- Linh Lu, DORiverside, CA 925051215223748
- Taraneh Sarlati, M.D.Riverside, CA 925051144462581
- Anousheh Ashouri, M.D.Riverside, CA 925061336305036
- Vikram Sahay, DORiverside, CA 925061598714214
- Bassam BaderRiverside, CA 925031487072559
- Nawal Badran, M.D.Riverside, CA 925031215209846
Common questions
What is Duy Phan, DO's NPI number?
Duy Phan, DO's National Provider Identifier (NPI) is 1184243123, issued on Apr 9, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Duy Phan, DO located?
The NPPES record lists a practice address at 10800 Magnolia Ave, Riverside, CA, 92505. Phone: (833) 574-2273. Providers update this record themselves, so call before visiting.
How can I verify Duy Phan, DO's license?
NPPES lists California license number 20A20750, 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 Duy Phan, DO prescribe under Medicare Part D?
In 2024, Duy Phan, DO had 543 Medicare Part D claims for 202 beneficiaries; the average among hospitalist physician prescribers was 521. 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.