Daniel Merson, D.O
NPI 1982652129 · Internal Medicine Physician · Portland, ME
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Provider details
- NPI number
- 1982652129
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O
- Sex
- Male
- Sole proprietor
- No
- License
- ME1373 (ME)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Empagliflozinbrand: Jardiance | 33 | — |
| Dulaglutidebrand: Trulicity | 25 | — |
| Insulin Degludecbrand: Tresiba Flextouch U-100 | 22 | 12 |
| Pen Needle, Diabeticbrand: Nano 2nd Gen Pen Needle | 18 | — |
| Insulin Degludecbrand: Tresiba Flextouch U-200 | 17 | — |
| Pramlintide Acetatebrand: Symlinpen 60 | 15 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-04
- Last updated
- 2008-10-16
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.