Matthew Aaron Williamson, PA
Emergency Clinical Nurse Specialist · Turlock, CA
Matthew Aaron Williamson, PA is an emergency clinical nurse specialist with a practice address in Turlock, California, and NPI 1831173111, issued on Dec 1, 2005. Check the license (California PA18033, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Matthew Aaron Williamson
- Credential
- PA
- Primary taxonomy
- Emergency Clinical Nurse Specialist 364SE0003X
- License number
- PA18033 CA
Self-reported in NPPES; status is on the state search - Practice location
- 825 Delbon Ave, Turlock, CA 95382
- Phone
- (209) 342-2300
- Enumerated
- Dec 1, 2005
- Record last updated
- Oct 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (209) 524-4240
- Medicaid ID
- 0PA180330 CA
- Medicare enrollment
- Enrolled (PECOS I20051108000643); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency clinical nurse specialist records → All 23 in California → Look up another NPI →
Also registered at 825 Delbon Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maher Abadir, MDAnesthesiology Physician1669491718
- Gordon Alldrin, MDEmergency Medicine Physician1326039637
- Gurbir Atwal, MDInternal Medicine Physician1790737617
- Broniell AzofPharmacist1588277263
- Inderpal Bal, MDInternal Medicine Physician1265486815
- Ishtleen Bhatia, M.D.Internal Medicine Physician1851649396
Verify Matthew Aaron Williamson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA18033Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
15% fewer Medicare Part D claims than the average emergency clinical nurse specialist in 2024
333 Medicare Part D claims for 262 beneficiaries, against an average of 394 among the 15 providers of this specialty who prescribed in Part D. 22 claims were for opioids.
Most prescribed
- Cephalexin66 claims
- Amoxicillin-Clavulanate Potass29 claims
- Doxycycline Hyclate29 claims
- Prednisone21 claims
- Hydrocodone-Acetaminophen17 claims
- Azithromycin15 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): 79.2 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).
Industry payments in 2024: $79.99
1 payment: food and beverage; the largest payer was Heron Therapeutics, Inc. The 12 providers of this specialty with any payment received $124.10 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.
Bills Medicare through 3 group practices
- Adventist Health Physicians NetworkSonora, CA
- Sierra Emergency Medical Group IncSonora, CA
- Sonora Community HospitalSonora, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Matthew Aaron Williamson among 23 emergency clinical nurse specialist records in California
Matthew Aaron Williamson, PA is one of 23 emergency clinical nurse specialist records with a practice address in California. 43% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 57% newer
- In a Medicare fileYes · 43% of these records are
- In the CMS Doctors and Clinicians fileYes · 17% of these records are
- Record last updated2007 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 364SE0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Clinical Nurse Specialist providers in California
There are 23 emergency clinical nurse specialist records in California.
All 23 in California → Every provider in Turlock → Emergency Clinical Nurse Specialist nationwide →
The 8 emergency clinical nurse specialist records with the nearest ZIP codes
- Leopoldo Lopez, PATurlock, CA 953821316928484
- Harold Baker, PATurlock, CA 953801548353329
- Hilda Villarreal, NPModesto, CA 953501508832965
- Ivan Ventura, PA-CMerced, CA 953401295706661
- Julie Rossie, MS, RN, CCNSSanta Clara, CA 950511205347309
- Kevin Binder, PAOakland, CA 946021962483412
- Dana Kelly, PAOakland, CA 946021326020397
- Joshua Luftig, PAOakland, CA 946021134188501
Common questions
What is Matthew Aaron Williamson, PA's NPI number?
Matthew Aaron Williamson, PA's National Provider Identifier (NPI) is 1831173111, issued on Dec 1, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Matthew Aaron Williamson, PA located?
The NPPES record lists a practice address at 825 Delbon Ave, Turlock, CA, 95382. Phone: (209) 342-2300. Providers update this record themselves, so call before visiting.
How can I verify Matthew Aaron Williamson, PA's license?
NPPES lists California license number PA18033, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Matthew Aaron Williamson, PA prescribe under Medicare Part D?
In 2024, Matthew Aaron Williamson, PA had 333 Medicare Part D claims for 262 beneficiaries; the average among emergency clinical nurse specialist prescribers was 394. Part D covers Medicare prescriptions only.
What is Matthew Aaron Williamson, PA's MIPS final score?
The 2023 MIPS final score is 79.2 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.