Spencer Knapp, PA-C
Physician Assistant · Oakland, CA
Spencer Knapp, PA-C is a physician assistant with a practice address in Oakland, California, and NPI 1255842639, issued on Oct 12, 2017. Check the license (California 54930, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Spencer Knapp
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 54930 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3900 Piedmont Ave, Oakland, CA 94611
- Phone
- (415) 432-7899
- Enumerated
- Oct 12, 2017
- Record last updated
- Sep 8, 2023
- Fax
- (510) 899-7101
- Medicare enrollment
- Enrolled (PECOS I20171030003426); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 3900 Piedmont Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jaime Linsenbigler, PA-CPhysician Assistant1053796359
- Shannon Manley, FNP-BCNurse Practitioner1780149153
- Emma Pinizzotto, PA-CPhysician Assistant1619457876
Verify Spencer Knapp in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 54930Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average physician assistant in 2024
105 Medicare Part D claims for 82 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Amoxicillin-Clavulanate Potass14 claims
- Nitrofurantoin Mono-Macro12 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 MIPS final score for 2023 (Medicare payment program): 96.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Pleasanton Emergency Medical GroupLivermore, CA
- Ucsf Health Medical FoundationSan Bruno, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Spencer Knapp among 14,451 physician assistant records in California
Spencer Knapp, PA-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 2017, is newer than 47% of them.
- NPI issued2017 · 47% of these records are older, 48% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2017 · 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).
Physician Assistant providers in California
There are 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Oakland → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Michelle Albertoni, PAOakland, CA 946111912297268
- Matthew Dowell, PAOakland, CA 946111235417791
- Michael Duffy, PAOakland, CA 946111801839188
- Christina Giannetti, PAOakland, CA 946111245552553
- Ronete HamiltonOakland, CA 946111871867259
- Sanjeev Joshua, PAOakland, CA 946111699939660
- Jamon Larry, PA-COakland, CA 946111093087306
- Ryan Otto, PAOakland, CA 946111174845226
Common questions
What is Spencer Knapp, PA-C's NPI number?
Spencer Knapp, PA-C's National Provider Identifier (NPI) is 1255842639, issued on Oct 12, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Spencer Knapp, PA-C located?
The NPPES record lists a practice address at 3900 Piedmont Ave, Oakland, CA, 94611. Phone: (415) 432-7899. Providers update this record themselves, so call before visiting.
How can I verify Spencer Knapp, PA-C's license?
NPPES lists California license number 54930, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Spencer Knapp, PA-C prescribe under Medicare Part D?
In 2024, Spencer Knapp, PA-C had 105 Medicare Part D claims for 82 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Spencer Knapp, PA-C's MIPS final score?
The 2023 MIPS final score is 96.5 of 100. 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.