Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

John Mackenzie, MD

Individual provider Psychiatry Physician · NPI 1780110700

John Mackenzie, MD practises Psychiatry in Elmhurst, New York. Qualified in 2018, 8 years ago. Practices with New York City Health and Hospitals Corporation, a 538-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
8
Licensed in
NY
In the registry since
2017
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

7901 Broadway # D10-36
Elmhurst, NY 11373-1329
Phone: (718) 334-3501
Fax: (718) 334-5006
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence 306768 (NY)

Record details

NPI number1780110700
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 11, 2017
Last updated in NPPESJuly 7, 2023
Certification dateJuly 7, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPSYCHIATRY
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice New York City Health And Hospitals Corporation — 538 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients11
Services billed 49 a service is one billed item, such as a visit, a test or a procedure
Average patient age63

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at New York City Health and Hospitals Corporation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 538 clinicians in the practice; 12 are shown here.

Other providers in Elmhurst