Douglas Ertman, M.D.
NPI 1043253636 · Family Medicine Physician · Yarmouth, ME
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Douglas Ertman, M.D. is a Family Medicine Physician provider in Yarmouth, ME (NPI 1043253636).
Provider details
- NPI number
- 1043253636
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 014987 (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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 40 | 40 |
| Cephalexin | 34 | 34 |
| Doxycycline Monohydrate | 33 | 33 |
| Azithromycin | 24 | 24 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 18 | 17 |
| Amoxicillin | 16 | 16 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 13 | 13 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-13
- Last updated
- 2012-01-25
Frequently asked questions
- What is Douglas Ertman's NPI number?
- Douglas Ertman's National Provider Identifier (NPI) is 1043253636, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Douglas Ertman's specialty?
- Douglas Ertman is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Douglas Ertman located?
- Douglas Ertman's practice location on file with NPPES is 385 Route 1, Yarmouth, ME 04096-6729.
- What is Douglas Ertman's phone number?
- The practice phone number listed in the NPPES registry for Douglas Ertman is (207) 535-1200.
- Does Douglas Ertman accept Medicare?
- Douglas Ertman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Douglas Ertman's NPI active?
- Yes — Douglas Ertman's NPI (1043253636) is active in the NPPES registry as of the last update on 2012-01-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.