Mark Johnston, MD FRCSC
NPI 1851398168 · Ophthalmology Physician · Omaha, NE
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Johnston, MD FRCSC is a Ophthalmology Physician provider in Omaha, NE (NPI 1851398168).
Provider details
- NPI number
- 1851398168
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD FRCSC
- Sex
- Male
- Sole proprietor
- Yes
- License
- 31743 (IA)
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
- 2005-06-30
- Last updated
- 2023-03-06
- Certified
- 2023-03-06
Frequently asked questions
- What is Mark Johnston's NPI number?
- Mark Johnston's National Provider Identifier (NPI) is 1851398168, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Johnston's specialty?
- Mark Johnston is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Johnston located?
- Mark Johnston's practice location on file with NPPES is 13330 N 74th St, Omaha, NE 68122-1919.
- What is Mark Johnston's phone number?
- The practice phone number listed in the NPPES registry for Mark Johnston is (402) 639-3250.
- Does Mark Johnston accept Medicare?
- Mark Johnston is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Johnston's NPI active?
- Yes — Mark Johnston's NPI (1851398168) is active in the NPPES registry as of the last update on 2023-03-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.