Robert Johnston, MD
NPI 1225116411 · Internal Medicine Physician · Pittsburgh, PA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Johnston, MD is a Internal Medicine Physician provider in Pittsburgh, PA (NPI 1225116411).
Provider details
- NPI number
- 1225116411
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD015363E (PA)
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
19 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
- 2006-11-02
- Last updated
- 2012-08-01
Frequently asked questions
- What is Robert Johnston's NPI number?
- Robert Johnston's National Provider Identifier (NPI) is 1225116411, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Johnston's specialty?
- Robert Johnston is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Johnston located?
- Robert Johnston's practice location on file with NPPES is 1400 Locust St, Pittsburgh, PA 15219-5114.
- What is Robert Johnston's phone number?
- The practice phone number listed in the NPPES registry for Robert Johnston is (412) 471-3061.
- Does Robert Johnston accept Medicare?
- Robert Johnston is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Johnston's NPI active?
- Yes — Robert Johnston's NPI (1225116411) is active in the NPPES registry as of the last update on 2012-08-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.