Allison Bayer, PA-C
Physician Assistant · Pleasanton, CA
Allison Bayer, PA-C is a physician assistant with a practice address in Pleasanton, California, and NPI 1437141165, issued on Aug 18, 2005. Check the license (California 66341, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Allison Bayer
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- 66341 CA
1274 MA
Self-reported in NPPES; status is on the state search - Practice location
- 4725 1St St Ste 100, Pleasanton, CA 94566
- Phone
- (925) 734-3333
- Enumerated
- Aug 18, 2005
- Entity
- Type 1 · individual
Also registered at 4725 1St St Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennifer Adey, MDObstetrics & Gynecology Physician1417202508
- Alexandriah Alas, MDUrogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician1003047515
- Monica Choo, MDObstetrics Physician1326673401
- Nuria Garcia-Ruiz, M.D.Gynecology Physician1184079261
- Rekha George, NPRegistered Nurse1083776512
- Margaret Over, PA-CPhysician Assistant1447850649
Verify Allison Bayer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 66341Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
98% fewer Medicare Part D claims than the average physician assistant in 2024
19 Medicare Part D claims for 12 beneficiaries, against an average of 832 among the 95,030 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.
2 hospital and facility affiliations
- Harvard Medical Faculty Phys AT Beth Israel Deaconess Med Ctr IncBoston, MA
- University Healthcare AllianceSan Ramon, CA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
25 physician assistant records list a Pleasanton practice address
They are 25 of the 2,213 NPPES records with a Pleasanton practice address, and 13,861 physician assistant records in California.
All 25 in Pleasanton → All 13,861 in California → Every provider in Pleasanton →
Other physician assistant records in California
- Marcia -Galbraith, PAStockton, CA1407143274
- Danny Abad, PAOrange, CA1477158673
- Lea Dominique Abadies, PATustin, CA1124754254
- Rea Elizabeth Abaniel, P.A.-CSeal Beach, CA1396173621
- Ramina Abbasi, PA-CSignal Hill, CA1093448300
- Ariel Abbott, PA-CStockton, CA1780334342
- Barrie Abbott, PA-CAnza, CA1861602575
- Elizabeth Abbott, PA-CSan Diego, CA1437540762
- Angela Abboud, MMS, PA-CSanta Rosa, CA1114399334
- Fatimeh Abdallah, P.A.-CNewport Beach, CA1487002218
Common questions
What is Allison Bayer, PA-C's NPI number?
Allison Bayer, PA-C's National Provider Identifier (NPI) is 1437141165, issued on Aug 18, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Allison Bayer, PA-C located?
The NPPES record lists a practice address at 4725 1St St Ste 100, Pleasanton, CA, 94566. Phone: (925) 734-3333. Providers update this record themselves, so call before visiting.
How can I verify Allison Bayer, PA-C's license?
NPPES lists California license number 66341, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Allison Bayer, PA-C prescribe under Medicare Part D?
In 2024, Allison Bayer, PA-C had 19 Medicare Part D claims for 12 beneficiaries; the average among physician assistant prescribers was 832. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.