Douglas Johnston, MD
NPI 1225665326 · Psychiatry Physician · Portland, ME
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Douglas Johnston, MD is a Psychiatry Physician provider in Portland, ME (NPI 1225665326).
Provider details
- NPI number
- 1225665326
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD27615 (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
6 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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) |
|---|---|
| Sertraline Hcl | 41 |
| Olanzapine | 30 |
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 23 |
| Quetiapine Fumarate | 21 |
| Clozapine | 18 |
| Clonidine Hcl | 17 |
| Lorazepam | 15 |
| Trazodone Hcl | 14 |
| Divalproex Sodium | 13 |
| Haloperidol Decanoate |
Practice location
Mailing address
Additional practice locations (1)
- 22 Bramhall StPortland, ME 04102-3175Phone: (207) 662-2221
Registry dates
- Enumerated
- 2020-03-26
- Last updated
- 2024-06-12
- Certified
- 2024-06-12
Frequently asked questions
- What is Douglas Johnston's NPI number?
- Douglas Johnston's National Provider Identifier (NPI) is 1225665326, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Douglas Johnston's specialty?
- Douglas Johnston is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Douglas Johnston located?
- Douglas Johnston's practice location on file with NPPES is 216 Vaughan St, Portland, ME 04102-3204.
- What is Douglas Johnston's phone number?
- The practice phone number listed in the NPPES registry for Douglas Johnston is (207) 662-2221.
- Does Douglas Johnston accept Medicare?
- Douglas Johnston is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Douglas Johnston's NPI active?
- Yes — Douglas Johnston's NPI (1225665326) is active in the NPPES registry as of the last update on 2024-06-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.