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GREGORY J DIEHL MD PC
NPI 1235436130
Clinic/Center - Medical Specialty in Port Jefferson Station, NY

Active since February 12, 2011
11 MEDICAL DR, SUITE B, PORT JEFFERSON STATION, NY 11776(631) 476-7300(631) 476-7304 Get Directions Write a Review

NPPES record last updated: February 12, 2011. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Gregory J Diehl Md Pc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GREGORY J DIEHL MD PC (NPI 1235436130) is a healthcare organization registered as a medical specialty in Port Jefferson Station, New York and active in the NPI registry since February 2011. The organization lists Gregory J Diehl, President, as its authorized official.

NPPES Registry Identity

NPI1235436130
Entity TypeOrganization
Primary Taxonomy261QM2500X
Legal Business NameGREGORY J DIEHL MD PC
Location Address11 MEDICAL DR, SUITE BPort Jefferson Station, NY 11776-1589
Mailing Address11 Medical Dr, Suite BPort Jefferson Station, NY 11776-1589 · (631) 476-7300 · Fax (631) 476-7304
Phone(631) 476-7300
Fax(631) 476-7304
Organization SubpartNo
Authorized OfficialGregory J DiehlPresident · (631) 476-7300
Enumeration DateFebruary 12, 2011
✔ NPI 1235436130 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinic/Center · Medical SpecialtyAmbulatory Health Care Facilities
Taxonomy Code261QM2500X
License✔ Licensed in NY · 1902162
Definition
An entity, facility, or distinct part of a facility providing diagnostic, treatment, and prescriptive services related to a specific area of medical specialization. Frequently used for Title V related Children's Specialty services or to meet specific public health needs (e.g., infectious diseases or breast and cervical cancer).
11 MEDICAL DR, Port Jefferson Station, NY 11776
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Other Identifiers 3

Other1447249214NY · Npi
Medicare PIN89K831NY
Medicare UPINE87758NY

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

COLLEEN BREEN JOHNSON PA-C
Physician Assistant
11 MEDICAL DR
PORT JEFFERSON STATION, NY 11776
Suffolk County (631) 509-6066
HOLISTIC MEDICAL WELLNESS, PLLC
Emergency Medicine
11 MEDICAL DR
PORT JEFFERSON STATION, NY 11776
Suffolk County (646) 239-1656
11 MEDICAL DRIVE WELLNESS PLLC
Emergency Medicine (Emergency Medical Services)
11 MEDICAL DR, SUITE B
PORT JEFFERSON STATION, NY 11776
Suffolk County (631) 509-6066

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gregory J Diehl MD PC's NPI number?

The NPI number for Gregory J Diehl MD PC is 1235436130. It was assigned to this organization in the NPPES registry on February 12, 2011.

Where is Gregory J Diehl MD PC located?

Gregory J Diehl MD PC is located at 11 Medical Dr Suite B, Port Jefferson Station, NY 11776. The listed phone number is (631) 476-7300.

What is Gregory J Diehl MD PC's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Medical Specialty, with taxonomy code 261QM2500X.

When was this NPI record last updated?

The NPPES record for Gregory J Diehl MD PC was last updated on February 12, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.