Christopher R. Williams, PA
Physician Assistant · Emeryville, CA
Christopher R. Williams, PA is a physician assistant with a practice address in Emeryville, California, and NPI 1306245410, issued on Aug 14, 2014. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Christopher R. Williams
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 2100 Powell St, Emeryville, CA 94608
- Phone
- (510) 350-2842
- Enumerated
- Aug 14, 2014
- Record last updated
- Dec 30, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (510) 879-9128
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 2100 Powell St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Christopher R. Williams 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
71% fewer Medicare Part D claims than the average physician assistant in 2024
239 Medicare Part D claims for 182 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Albuterol Sulfate Hfa22 claims
- Amoxicillin-Clavulanate Potass21 claims
- Doxycycline Monohydrate19 claims
- Cefadroxil14 claims
- Prednisone12 claims
- Azithromycin11 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): 97.1 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).
Christopher R. Williams among 14,451 physician assistant records in California
Christopher R. Williams, PA 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 2014, is newer than 38% of them.
- NPI issued2014 · 38% of these records are older, 59% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2021 · 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).
57 physician assistant records list a practice address in Emeryville
They are 57 of the 703 NPPES records with a practice address in Emeryville, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Emeryville → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Anna Alongi, PA-CEmeryville, CA 946081851598254
- Susan Bertelsen, P.A.-C.Emeryville, CA 946081790809739
- James FlagerEmeryville, CA 946081841360781
- John Hardin, PACEmeryville, CA 946081215032982
- Liza Jastrow, L.AC.Emeryville, CA 946081447314836
- Antonette Jeske, P.A.Emeryville, CA 946081902992779
- Linda Kilhoffer, PAEmeryville, CA 946081346307071
- Martha Lynch, PA-COakland, CA 946081093727133
Common questions
What is Christopher R. Williams, PA's NPI number?
Christopher R. Williams, PA's National Provider Identifier (NPI) is 1306245410, issued on Aug 14, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Christopher R. Williams, PA located?
The NPPES record lists a practice address at 2100 Powell St, Emeryville, CA, 94608. Phone: (510) 350-2842. Providers update this record themselves, so call before visiting.
How can I verify Christopher R. Williams, PA's license?
Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Christopher R. Williams, PA prescribe under Medicare Part D?
In 2024, Christopher R. Williams, PA had 239 Medicare Part D claims for 182 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Christopher R. Williams, PA's MIPS final score?
The 2023 MIPS final score is 97.1 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.