Ajit John, MD
NPI 1720662679 · Psychiatry Physician · Lancaster, PA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ajit John, MD is a Psychiatry Physician provider in Lancaster, PA (NPI 1720662679).
Provider details
- NPI number
- 1720662679
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2021-05-07
- Last updated
- 2025-06-01
- Certified
- 2025-06-01
Frequently asked questions
- What is Ajit John's NPI number?
- Ajit John's National Provider Identifier (NPI) is 1720662679, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ajit John's specialty?
- Ajit John is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Ajit John located?
- Ajit John's practice location on file with NPPES is 333 Harrisburg Ave, Lancaster, PA 17603-2951.
- What is Ajit John's phone number?
- The practice phone number listed in the NPPES registry for Ajit John is (717) 740-4100.
- Does Ajit John accept Medicare?
- Ajit John is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ajit John's NPI active?
- Yes — Ajit John's NPI (1720662679) is active in the NPPES registry as of the last update on 2025-06-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.