Zachary Johnston, MD
NPI 1720449812 · Gastroenterology Physician · Bethesda, MD
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Zachary Johnston, MD is a Gastroenterology Physician provider in Bethesda, MD (NPI 1720449812).
Provider details
- NPI number
- 1720449812
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 0101262981 (VA)
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
10 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
- 2016-03-16
- Last updated
- 2024-04-15
- Certified
- 2024-04-15
Frequently asked questions
- What is Zachary Johnston's NPI number?
- Zachary Johnston's National Provider Identifier (NPI) is 1720449812, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zachary Johnston's specialty?
- Zachary Johnston is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Zachary Johnston located?
- Zachary Johnston's practice location on file with NPPES is 4494 Palmer Rd N, Bethesda, MD 20889-2111.
- What is Zachary Johnston's phone number?
- The practice phone number listed in the NPPES registry for Zachary Johnston is (717) 823-1216.
- Does Zachary Johnston accept Medicare?
- Zachary Johnston is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Zachary Johnston's NPI active?
- Yes — Zachary Johnston's NPI (1720449812) is active in the NPPES registry as of the last update on 2024-04-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.