Ajit Jason John, MD
Psychiatry Physician · Lancaster, PA
Ajit Jason John, MD is a psychiatry physician with a practice address in Lancaster, Pennsylvania, and NPI 1720662679, issued on May 7, 2021. Check the license (Pennsylvania MD486401, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Ajit Jason John
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- MD486401 PA
Self-reported in NPPES; status is on the state search - Practice location
- 333 Harrisburg Ave, Lancaster, PA 17603
- Phone
- (717) 740-4100
- Enumerated
- May 7, 2021
- Record last updated
- Jun 1, 2025
- Medicare enrollment
- Enrolled (PECOS I20250905002918); accepts Medicare assignment
- Medical or professional school
- Drexel University College Of Medicine, 2021
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 2,662 in Pennsylvania → Look up another NPI →
Also registered at 333 Harrisburg Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jamie CreamerPsychiatric/Mental Health Nurse Practitioner1043781537
- Paul DaveyPharmacy Technician1649054610
- Natalie Goss, CRNPFamily Nurse Practitioner1194397331
- Nicole Grazioli, CRNPPsychiatric/Mental Health Nurse Practitioner1982203337
- Stephen KiariePsychiatric/Mental Health Nurse Practitioner1821717513
- Vikas Mandadi, M.D.Psychiatry Physician1346691771
Verify Ajit Jason John in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD486401Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Lancaster Behavioral Health Hospital LLCLancaster, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ajit Jason John among 2,662 psychiatry physician records in Pennsylvania
Ajit Jason John, MD is one of 2,662 psychiatry physician records with a practice address in Pennsylvania. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 89% of them.
- NPI issued2021 · 89% of these records are older, 8% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 45% of these records are
- Graduated2021 · median 2003 among the 1,186 with a school on file
- Record last updated2025 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
53 psychiatry physician records list a practice address in Lancaster
They are 53 of the 5,378 NPPES records with a practice address in Lancaster, and 2,662 psychiatry physician records in Pennsylvania.
All 2,662 in Pennsylvania → Every provider in Lancaster → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Herbert Cooper, MDLancaster, PA 176031912918947
- Mary Davis, MDLancaster, PA 176031346261831
- Mohamed Elyan, M.D.Lancaster, PA 176031790884583
- Felicia Figueroa, M.D.Lancaster, PA 176031104138676
- Nathan Hoff, MDLancaster, PA 176031174104624
- Simrit Kahlon, MS, PA-CLancaster, PA 176031013466341
- Vikas Mandadi, M.D.Lancaster, PA 176031346691771
- Jeffrey Mufson, M.D.Lancaster, PA 176031255778155
Common questions
What is Ajit Jason John, MD's NPI number?
Ajit Jason John, MD's National Provider Identifier (NPI) is 1720662679, issued on May 7, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Ajit Jason John, MD located?
The NPPES record lists a practice address at 333 Harrisburg Ave, Lancaster, PA, 17603. Phone: (717) 740-4100. Providers update this record themselves, so call before visiting.
How can I verify Ajit Jason John, MD's license?
NPPES lists Pennsylvania license number MD486401, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.