Mathew Theron Southwick, P.A.-C.
Physician Assistant · Farmington, NM
Mathew Theron Southwick, P.A.-C. is a physician assistant with a practice address in Farmington, New Mexico, and NPI 1346798204, issued on Sep 20, 2016. Check the license with the New Mexico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mathew Theron Southwick
- Credential
- P.A.-C.
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 2300 E 30TH St Bldg D-101, Farmington, NM 87401
- Phone
- (505) 208-6280
- Enumerated
- Sep 20, 2016
- Record last updated
- May 19, 2026
- Fax
- (505) 564-3202
- Medicare enrollment
- Enrolled (PECOS I20161201000173); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 847 in New Mexico → Look up another NPI →
Also registered at 2300 E 30TH St Bldg D-101
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bryan Broadbent, DPMFoot Surgery Podiatrist1215011218
- Clifford Goldthorpe, D.O.Orthopaedic Surgery Physician1871941054
Verify Mathew Theron Southwick in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New Mexico 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
55% fewer Medicare Part D claims than the average physician assistant in 2024
371 Medicare Part D claims for 153 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 116 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen56 claims
- Gabapentin46 claims
- Ibuprofen43 claims
- Meloxicam41 claims
- Naproxen35 claims
- Celecoxib29 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): 89.2 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: $78.59
5 payments; by number, the most common kind was food and beverage; the largest payer was Bioventus LLC. The 64,719 providers of this specialty with any payment received $841.65 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 2 group practices
- Orthopedic Associates PAFarmington, NM
- San Juan Regional Medical Center, Inc.Farmington, NM
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mathew Theron Southwick among 847 physician assistant records in New Mexico
Mathew Theron Southwick, P.A.-C. is one of 847 physician assistant records with a practice address in New Mexico. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 51% of them.
- NPI issued2016 · 51% of these records are older, 44% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2016 · median 2018 among the 521 with a school on file
- Record last updated2026 · 41% 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 New Mexico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
39 physician assistant records list a practice address in Farmington
They are 39 of the 1,590 NPPES records with a practice address in Farmington, and 847 physician assistant records in New Mexico.
All 847 in New Mexico → Every provider in Farmington → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Diandra Becenti, P.A.Farmington, NM 874011336375443
- Mary Bodewes, PACFarmington, NM 874011659476398
- Mary Gallahan, PA-CFarmington, NM 874011952308694
- Glenn Martin, PA-C.Farmington, NM 874011972692184
- Edmund McNally, P.A.Farmington, NM 874011184850372
- Meghan Nipper, P.A.Farmington, NM 874011033417027
- Lloyd PercellFarmington, NM 874011083682793
- Mary Pickard, PA-CFarmington, NM 874011205185261
Common questions
What is Mathew Theron Southwick, P.A.-C.'s NPI number?
Mathew Theron Southwick, P.A.-C.'s National Provider Identifier (NPI) is 1346798204, issued on Sep 20, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Mathew Theron Southwick, P.A.-C. located?
The NPPES record lists a practice address at 2300 E 30TH St Bldg D-101, Farmington, NM, 87401. Phone: (505) 208-6280. Providers update this record themselves, so call before visiting.
How can I verify Mathew Theron Southwick, P.A.-C.'s license?
Search the New Mexico board that licenses this profession; the NPPES record confirms identity only.
How much does Mathew Theron Southwick, P.A.-C. prescribe under Medicare Part D?
In 2024, Mathew Theron Southwick, P.A.-C. had 371 Medicare Part D claims for 153 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Mathew Theron Southwick, P.A.-C.'s MIPS final score?
The 2023 MIPS final score is 89.2 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.