Matthew Fiess, PA
Physician Assistant · Gonzales, CA
Matthew Fiess, PA is a physician assistant with a practice address in Gonzales, California, and NPI 1477080869, issued on May 16, 2017. Check the license (California 54480, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Matthew Fiess
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 54480 CA
Self-reported in NPPES; status is on the state search - Practice location
- 850 5TH St, Gonzales, CA 93926
- Phone
- (831) 675-3601
- Enumerated
- May 16, 2017
- Entity
- Type 1 · individual
Also registered at 850 5TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Timothy Albert, M.D.Cardiovascular Disease Physician1225086192
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- Marisol Ayala GarciaPhysician Assistant1356186431
- Eyda Calero Bellorin, FNP-CFamily Nurse Practitioner1437998465
- Miguel Dorantes, MDFamily Medicine Physician1831484294
- Susan Ganzhorn, PAMedical Physician Assistant1336299973
Verify Matthew Fiess in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 54480Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
3.6 times the Medicare Part D claims of the average physician assistant in 2024
3,023 Medicare Part D claims for 425 beneficiaries, against an average of 832 among the 95,030 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 15 claims were for opioids.
Most prescribed
- Atorvastatin Calcium418 claims
- Metformin Hcl245 claims
- Losartan Potassium155 claims
- Amlodipine Besylate148 claims
- Lisinopril121 claims
- Omeprazole115 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 Medicare quality score for 2023: 84.6 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: $392.05
19 payments, mostly food and beverage; the largest payer was Novo Nordisk Inc. The 61,144 providers of this specialty with any payment received $853.85 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.
One hospital or facility affiliation
- Salinas Valley Memorial Healthcare SystemGonzales, 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.
6 physician assistant records list a Gonzales practice address
They are 6 of the 50 NPPES records with a Gonzales practice address, and 13,861 physician assistant records in California.
All 6 in Gonzales → All 13,861 in California → Every provider in Gonzales →
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 Matthew Fiess, PA's NPI number?
Matthew Fiess, PA's National Provider Identifier (NPI) is 1477080869, issued on May 16, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Matthew Fiess, PA located?
The NPPES record lists a practice address at 850 5TH St, Gonzales, CA, 93926. Phone: (831) 675-3601. Providers update this record themselves, so call before visiting.
How can I verify Matthew Fiess, PA's license?
NPPES lists California license number 54480, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Matthew Fiess, PA prescribe under Medicare Part D?
In 2024, Matthew Fiess, PA had 3,023 Medicare Part D claims for 425 beneficiaries; the average among physician assistant prescribers was 832. Part D covers Medicare prescriptions only.
What is Matthew Fiess, PA's Medicare quality score?
The 2023 MIPS final score is 84.6 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), 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.