Amy Horan, OPA-C
Physician Assistant · Vallejo, CA
Amy Horan, OPA-C is a physician assistant with a practice address in Vallejo, California, and NPI 1821372871, issued on Oct 7, 2011. Check the license (California 52433, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Amy Horan
- Credential
- OPA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- 52433 CA
1161 CA
18634 NY
Self-reported in NPPES; status is on the state search - Practice location
- 100 Hospital Dr Ste 303, Vallejo, CA 94589
- Phone
- (707) 645-7210
- Enumerated
- Oct 7, 2011
- Record last updated
- Jun 29, 2023
- Fax
- (707) 645-7249
- Medicare enrollment
- Enrolled (PECOS I20180409002786); accepts Medicare assignment
- Medical or professional school
- Stanford University School Of Medicine, 2015
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 100 Hospital Dr Ste 303
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Nicole Young, PA-CPhysician Assistant1760912117
Verify Amy Horan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 52433Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% fewer Medicare Part D claims than the average physician assistant in 2024
445 Medicare Part D claims for 339 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Cephalexin72 claims
- Prednisone49 claims
- Amoxicillin-Clavulanate Potass30 claims
- Doxycycline Hyclate28 claims
- Albuterol Sulfate Hfa27 claims
- Nitrofurantoin Mono-Macro23 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 76.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- University OF RochesterRochester, NY
- University OF Rochester Urgent CarePenfield, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Amy Horan among 14,451 physician assistant records in California
Amy Horan, OPA-C 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 2011, is newer than 30% of them.
- NPI issued2011 · 30% of these records are older, 67% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2015 · median 2018 among the 7,214 with a school on file
- Record last updated2023 · 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).
215 physician assistant records list a practice address in Vallejo
They are 215 of the 2,836 NPPES records with a practice address in Vallejo, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Vallejo → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Bailey Bangerter, PA-CVallejo, CA 945891336618040
- Tamara Ito, PA-CVallejo, CA 945891194688812
- Aide Paredes-Salceda, PACVallejo, CA 945891538241401
- Jason Ricci, PAVallejo, CA 945891710490149
- Kelley Rodolff, PA-CVallejo, CA 945891669885539
- Robin Wempe, PAVallejo, CA 945891750568721
- Heather Wright, PA-CVallejo, CA 945891427612910
- Nicole Young, PA-CVallejo, CA 945891760912117
Common questions
What is Amy Horan, OPA-C's NPI number?
Amy Horan, OPA-C's National Provider Identifier (NPI) is 1821372871, issued on Oct 7, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Amy Horan, OPA-C located?
The NPPES record lists a practice address at 100 Hospital Dr Ste 303, Vallejo, CA, 94589. Phone: (707) 645-7210. Providers update this record themselves, so call before visiting.
How can I verify Amy Horan, OPA-C's license?
NPPES lists California license number 52433, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Amy Horan, OPA-C prescribe under Medicare Part D?
In 2024, Amy Horan, OPA-C had 445 Medicare Part D claims for 339 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Amy Horan, OPA-C's MIPS final score?
The 2023 MIPS final score is 76.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.