Thomas Brennan, MD
NPI 1407963226 · Family Medicine Physician · Mankato, MN
Enrolled with Medicare as Order and Referring Only - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Brennan, MD is a Family Medicine Physician provider in Mankato, MN (NPI 1407963226).
Provider details
- NPI number
- 1407963226
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 3980 (SD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 48 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 100 | 26 |
| Levothyroxine Sodium | 88 | 19 |
| Amlodipine Besylate | 81 | 19 |
| Furosemide | 70 | 14 |
| Omeprazole | 56 | 11 |
| Gabapentin | 53 | 16 |
| Lisinopril | 49 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-25
- Last updated
- 2020-07-09
- Certified
- 2020-07-09
Frequently asked questions
- What is Thomas Brennan's NPI number?
- Thomas Brennan's National Provider Identifier (NPI) is 1407963226, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Brennan's specialty?
- Thomas Brennan is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Brennan located?
- Thomas Brennan's practice location on file with NPPES is 1230 E Main St, Mankato, MN 56001-5066.
- What is Thomas Brennan's phone number?
- The practice phone number listed in the NPPES registry for Thomas Brennan is (507) 625-1811.
- Does Thomas Brennan accept Medicare?
- Thomas Brennan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Brennan's NPI active?
- Yes — Thomas Brennan's NPI (1407963226) is active in the NPPES registry as of the last update on 2020-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.