Thomas Marcroft, MD
NPI 1538858071 · Student in an Organized Health Care Education/Training Program · Duluth, MN
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Marcroft, MD is a Student in an Organized Health Care Education/Training Program provider in Duluth, MN (NPI 1538858071).
Provider details
- NPI number
- 1538858071
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 yrs in NPPES registry
- Profile completeness38% of score
83% 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 · 13 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Quetiapine Fumarate | 27 |
| Amlodipine Besylate | 22 |
| Lisinopril | 21 |
| Clozapine | 19 |
| Losartan Potassium | 14 |
| Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar | 14 |
| Omeprazole | 13 |
| Pen Needle,dual Safety,diabetcbrand: Autoshield Duo Pen Needle | 12 |
| Gabapentin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2023-05-02
- Last updated
- 2023-05-02
- Certified
- 2023-05-02
Frequently asked questions
- What is Thomas Marcroft's NPI number?
- Thomas Marcroft's National Provider Identifier (NPI) is 1538858071, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Marcroft's specialty?
- Thomas Marcroft is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Thomas Marcroft located?
- Thomas Marcroft's practice location on file with NPPES is 330 N 8th Ave E, Duluth, MN 55805-2024.
- What is Thomas Marcroft's phone number?
- The practice phone number listed in the NPPES registry for Thomas Marcroft is (218) 529-9122.
- Does Thomas Marcroft accept Medicare?
- Thomas Marcroft is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Marcroft's NPI active?
- Yes — Thomas Marcroft's NPI (1538858071) is active in the NPPES registry as of the last update on 2023-05-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.