Thomas F. Marren, MD
Family Medicine Physician · Farmington, NM
Thomas F. Marren, MD is a family medicine physician with a practice address in Farmington, New Mexico, and NPI 1952309833, issued on Jul 13, 2005. Check the license (New Mexico MD2011-0630, as entered in NPPES) on the New Mexico Medical Board; the Medicare figures below come from public CMS files.
- Name
- Thomas F. Marren
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- MD2011-0630 NM
4301082611 MI
45881 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1001 W Broadway, Farmington, NM 87401
- Phone
- (505) 327-4796
- Enumerated
- Jul 13, 2005
- Record last updated
- Aug 30, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (505) 325-9113
- Medicaid IDs
- 4524367 MI
34409100 WI - Medicare enrollment
- Enrolled (PECOS I20111104000191); accepts Medicare assignment
- Medical or professional school
- Loyola University Of Chicago, Stritch School Of Medicine, 2000
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 1,287 in New Mexico → Look up another NPI →
Also registered at 1001 W Broadway
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Saleem Akhtar, DOFamily Medicine Physician1891850434
- Theresa Ameri, DNP FNP-BCFamily Nurse Practitioner1770848780
- David Asante, PMHNP - BCPsychiatric/Mental Health Nurse Practitioner1891326138
- Jessica Bair, CSWCase Manager/Care Coordinator1225607864
- Heather Baker, CSWCase Manager/Care Coordinator1700448842
- Alexandria BegayMental Health Counselor1093160376
Verify Thomas F. Marren in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Mexico Medical Board
Search for license MD2011-0630Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.9 times the Medicare Part D claims of the average family medicine physician in 2024
10,428 Medicare Part D claims for 635 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 301 claims were for opioids.
Most prescribed
- Atorvastatin Calcium591 claims
- Amlodipine Besylate444 claims
- Levothyroxine Sodium324 claims
- Lisinopril300 claims
- Omeprazole288 claims
- Metoprolol Succinate285 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): 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).
Bills Medicare through one group practice
- Aspirus Rhinelander And Tomahawk Hospitals And Clinics, Inc.Rhinelander, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas F. Marren among 1,287 family medicine physician records in New Mexico
Thomas F. Marren, MD is one of 1,287 family medicine physician records with a practice address in New Mexico. 72% 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, 88% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2000 · median 2008 among the 727 with a school on file
- Record last updated2011 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a New Mexico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
38 family medicine physician records list a practice address in Farmington
They are 38 of the 1,590 NPPES records with a practice address in Farmington, and 1,287 family medicine physician records in New Mexico.
All 1,287 in New Mexico → Every provider in Farmington → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Holly Abernethy, M.D.Farmington, NM 874011801836523
- Ronald Bliss, MDFarmington, NM 874011912985946
- Ken Crider, M.D.Farmington, NM 874011831114172
- Matthew Dekay, M.D.Farmington, NM 874011053388058
- Dan Dunn, MDFarmington, NM 874011205839834
- Sean Faherty, MDFarmington, NM 874011174501191
- Lance Harmon, M.D.Farmington, NM 874011811912157
- David Homer, MDFarmington, NM 874011295738656
Common questions
What is Thomas F. Marren, MD's NPI number?
Thomas F. Marren, MD's National Provider Identifier (NPI) is 1952309833, issued on Jul 13, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Thomas F. Marren, MD located?
The NPPES record lists a practice address at 1001 W Broadway, Farmington, NM, 87401. Phone: (505) 327-4796. Providers update this record themselves, so call before visiting.
How can I verify Thomas F. Marren, MD's license?
NPPES lists New Mexico license number MD2011-0630, as entered by the provider. Search the New Mexico Medical Board at https://www.nmmb.state.nm.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Thomas F. Marren, MD prescribe under Medicare Part D?
In 2024, Thomas F. Marren, MD had 10,428 Medicare Part D claims for 635 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Thomas F. Marren, MD's MIPS final 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), 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.