Alina S. Popa, MD
Hospitalist Physician · Riverside, CA
Alina S. Popa, MD is a hospitalist physician with a practice address in Riverside, California, and NPI 1003893348, issued on Dec 28, 2005. Check the license (California 107794, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Alina S. Popa
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License numbers
- 107794 CA
49589 MN
Self-reported in NPPES; status is on the state search - Practice location
- 4445 Magnolia Ave, Riverside, CA 92501
- Phone
- (951) 788-3636
- Enumerated
- Dec 28, 2005
- Record last updated
- Apr 30, 2023
- Medicaid IDs
- 156612100 MN
ENROLLED MN - Medicare enrollment
- Enrolled (PECOS I20090807000078); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 4445 Magnolia Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Brandon Abrajan, DOStudent in an Organized Health Care Education/Training Program1861141186
Verify Alina S. Popa in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 107794Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average hospitalist physician in 2024
28 Medicare Part D claims for 13 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
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: $76.35
5 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 7,324 providers of this specialty with any payment received $494.84 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
- Alertive Healthcare Medical Group ApcRiverside, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alina S. Popa among 3,099 hospitalist physician records in California
Alina S. Popa, MD 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 98% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated1994 · median 2010 among the 2,505 with a school on file
- Record last updated2023 · 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
- Maria Akamnonu, M.D.Riverside, CA 925011023403730
- Sarmad Al-Bahrani, MDRiverside, CA 925011437672763
- Kiran Chamarti, DORiverside, CA 925011225732258
- Victor Fayad, M.DRiverside, CA 925011164654604
- Masoumeh Ghaffari, M.D.Riverside, CA 925011437470507
- Wesley Livingston, DORiverside, CA 925011871025551
- Michael Nguyen, DORiverside, CA 925011366939043
- Remus Popa, MDRiverside, CA 925011265419519
Common questions
What is Alina S. Popa, MD's NPI number?
Alina S. Popa, MD's National Provider Identifier (NPI) is 1003893348, issued on Dec 28, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Alina S. Popa, MD located?
The NPPES record lists a practice address at 4445 Magnolia Ave, Riverside, CA, 92501. Phone: (951) 788-3636. Providers update this record themselves, so call before visiting.
How can I verify Alina S. Popa, MD's license?
NPPES lists California license number 107794, 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 Alina S. Popa, MD prescribe under Medicare Part D?
In 2024, Alina S. Popa, MD had 28 Medicare Part D claims for 13 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.