James Johnston, MD
NPI 1144204314 · Internal Medicine Physician · Oklahoma City, OK
James Johnston, MD is a Internal Medicine Physician provider in Oklahoma City, OK (NPI 1144204314).
Provider details
- NPI number
- 1144204314
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 9515 (OK)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-01
- Last updated
- 2011-01-10
Frequently asked questions
- What is James Johnston's NPI number?
- James Johnston's National Provider Identifier (NPI) is 1144204314, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Johnston's specialty?
- James Johnston is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is James Johnston located?
- James Johnston's practice location on file with NPPES is 1110 N Classen Blvd, Oklahoma City, OK 73106-6842.
- What is James Johnston's phone number?
- The practice phone number listed in the NPPES registry for James Johnston is (405) 236-3736.
- Is James Johnston's NPI active?
- Yes — James Johnston's NPI (1144204314) is active in the NPPES registry as of the last update on 2011-01-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.