James Dale Williamson, PA-C
Medical Physician Assistant · Modesto, CA
James Dale Williamson, PA-C is a medical physician assistant with a practice address in Modesto, California, and NPI 1306072046, issued on Jun 9, 2009. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- James Dale Williamson
- Credential
- PA-C
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- Practice location
- 2209 Coffee RD Ste I, Modesto, CA 95355
- Phone
- (209) 526-6400
- Enumerated
- Jun 9, 2009
- Record last updated
- Aug 5, 2026
- Fax
- (209) 637-2834
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 3,376 in California → Look up another NPI →
Verify James Dale Williamson 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
5.5 times the Medicare Part D claims of the average medical physician assistant in 2024
6,293 Medicare Part D claims for 432 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 247 claims were for opioids.
Most prescribed
- Atorvastatin Calcium341 claims
- Levothyroxine Sodium222 claims
- Amlodipine Besylate187 claims
- Metformin Hcl185 claims
- Ibuprofen178 claims
- Lisinopril178 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.
Industry payments in 2024: $566.84
22 payments; by number, the most common kind was food and beverage; the largest payer was Corcept Therapeutics. The 16,165 providers of this specialty with any payment received $1,055.00 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
James Dale Williamson among 3,376 medical physician assistant records in California
James Dale Williamson, PA-C is one of 3,376 medical physician assistant records with a practice address in California. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 38% of them.
- NPI issued2009 · 38% of these records are older, 58% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · 40% of these records are
- Record last updated2026 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Physician Assistant providers in California
There are 3,376 medical physician assistant records in California.
All 3,376 in California → Every provider in Modesto → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Loren Bauman, PAModesto, CA 953551326155052
- David Boone, PA-CModesto, CA 953551861895278
- Jeffrey Brayshaw, PAModesto, CA 953551932284338
- Dianne David, P.A.Modesto, CA 953551356500037
- Delia Hernandez, PA-CModesto, CA 953551174606800
- Thomas Kraft, PAModesto, CA 953551306895651
- Betty Larrabee, PAModesto, CA 953551700898772
- Kristine Lindstrom, PAModesto, CA 953551851558308
Common questions
What is James Dale Williamson, PA-C's NPI number?
James Dale Williamson, PA-C's National Provider Identifier (NPI) is 1306072046, issued on Jun 9, 2009. An NPI identifies a provider in billing; it is not a license.
Where is James Dale Williamson, PA-C located?
The NPPES record lists a practice address at 2209 Coffee RD Ste I, Modesto, CA, 95355. Phone: (209) 526-6400. Providers update this record themselves, so call before visiting.
How can I verify James Dale Williamson, PA-C's license?
Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does James Dale Williamson, PA-C prescribe under Medicare Part D?
In 2024, James Dale Williamson, PA-C had 6,293 Medicare Part D claims for 432 beneficiaries; the average among medical physician assistant prescribers was 1,148. Part D covers Medicare prescriptions only.
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.