Sean O'Donnell
Physician Assistant · Pomona, CA
Sean O'Donnell is a physician assistant with a practice address in Pomona, California, and NPI 1952889982, issued on Aug 1, 2018. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Sean O'Donnell
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 309 E 2ND St, Pomona, CA 91766
- Phone
- (909) 623-6116
- Enumerated
- Aug 1, 2018
- Record last updated
- Aug 1, 2018 (not updated in 8 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
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Verify Sean O'Donnell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck 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 physician assistant in 2024
43 Medicare Part D claims for 19 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 23 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen20 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Sean O'Donnell among 14,451 physician assistant records in California
Sean O'Donnell is one of 14,451 physician assistant records with a practice address in California. 75% 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 52% of them.
- NPI issued2018 · 52% of these records are older, 44% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2018 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
186 physician assistant records list a practice address in Pomona
They are 186 of the 5,102 NPPES records with a practice address in Pomona, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Pomona → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Lidia AlvarezPomona, CA 917661477004265
- Parvaneh Darvish, P.A.-CPomona, CA 917661295946697
- Timothy Foster, PAPomona, CA 917661427505296
- Hailey GarrisonPomona, CA 917661629590732
- Cynthia Hoang, PA-CPomona, CA 917661245548874
- Jonathan LeePomona, CA 917661609329424
- Miguel Medina, PACPomona, CA 917661447232640
- Reynaldo Obrero, P.A.-CPomona, CA 917661275784852
Common questions
What is Sean O'Donnell's NPI number?
Sean O'Donnell's National Provider Identifier (NPI) is 1952889982, issued on Aug 1, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Sean O'Donnell located?
The NPPES record lists a practice address at 309 E 2ND St, Pomona, CA, 91766. Phone: (909) 623-6116. Providers update this record themselves, so call before visiting.
How can I verify Sean O'Donnell's license?
Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Sean O'Donnell prescribe under Medicare Part D?
In 2024, Sean O'Donnell had 43 Medicare Part D claims for 19 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Sean O'Donnell's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.