Christopher Johnston, D.O.
NPI 1720216245 · Family Medicine Physician · Old Town, ME
Christopher Johnston, D.O. is a Family Medicine Physician provider in Old Town, ME (NPI 1720216245).
Provider details
- NPI number
- 1720216245
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- DO2341 (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
17 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-06-23
- Last updated
- 2018-06-27
Frequently asked questions
- What is Christopher Johnston's NPI number?
- Christopher Johnston's National Provider Identifier (NPI) is 1720216245, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Johnston's specialty?
- Christopher Johnston is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Christopher Johnston located?
- Christopher Johnston's practice location on file with NPPES is 242 Brunswick St, Old Town, ME 04468.
- What is Christopher Johnston's phone number?
- The practice phone number listed in the NPPES registry for Christopher Johnston is (207) 827-6128.
- Is Christopher Johnston's NPI active?
- Yes — Christopher Johnston's NPI (1720216245) is active in the NPPES registry as of the last update on 2018-06-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.