Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

GREGORY J FLEMING M.D.
NPI 1255372165
Specialist in Morristown, NJ

Q: What is Gregory Fleming's NPI number?

The NPI number for Gregory Fleming is 1255372165. It was assigned to this individual provider in the NPPES registry on June 10, 2006.

Q: What is Gregory Fleming's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Q: When was this NPI record last updated?

The NPPES record for Gregory Fleming was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 36 days 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.

Active since June 10, 2006

26 MADISON AVE, MORRISTOWN, NJ 07960(973) 267-1851(973) 267-0024 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Gregory J Fleming M.d. NPPES

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

GREGORY J FLEMING M.D. (NPI 1255372165) is an individual specialist in Morristown, New Jersey, licensed in New Jersey (51070) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1255372165

Entity TypeIndividualMale

Primary Taxonomy174400000X

Provider Legal NameGREGORY J FLEMINGCredential: M.D.

Location Address26 MADISON AVEMorristown, NJ 07960-7310

Mailing Address26 Madison AveMorristown, NJ 07960-7310 · (973) 267-1851 · Fax (973) 267-0024

Phone(973) 267-1851

Fax(973) 267-0024

Sole ProprietorNo

Enumeration DateJune 10, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1255372165 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers

Taxonomy Code174400000X

License✔ Licensed in NJ · 51070

Definition

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

26 MADISON AVE, Morristown, NJ 07960

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Other Providers at the Same Location NPPES 20

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

HERMAN L WALDMAN DDS PA

Dentist (General Practice)

26 MADISON AVE
MORRISTOWN, NJ 07960

Morris County (973) 539-1434

ADVANCED NEPHROLOGY & HYPERTENSION, LLC

Internal Medicine (Nephrology)

26 MADISON AVE, SUITE 1
MORRISTOWN, NJ 07960

Morris County (862) 260-9014

BONNIE SUSSER M.A. CCC(SP)

Speech-Language Pathologist

26 MADISON AVE
MORRISTOWN, NJ 07960

Morris County (973) 292-2265

DIDIER L PERON M.D.

Specialist

26 MADISON AVE
MORRISTOWN, NJ 07960

Morris County (973) 267-1851

MRS. CYNTHIA A. ODELL

Marriage & Family Therapist

26 MADISON AVE
MORRISTOWN, NJ 07960

Morris County (862) 242-6500

DR. JENNIFER SUMERLIN PSYD, MFT

Marriage & Family Therapist

26 MADISON AVE
MORRISTOWN, NJ 07960

Morris County (973) 796-3760

WONDER YEARS PSYCHIATRIC SERVICES OF NEW JERSEY PC

Psychiatry & Neurology (Psychiatry)

26 MADISON AVE
MORRISTOWN, NJ 07960

Morris County (347) 987-4233

DAVID MATTHEW MALONEY AUD

Audiologist

26 MADISON AVE
MORRISTOWN, NJ 07960

Morris County (973) 656-1100

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 Fleming's NPI number?

The NPI number for Gregory Fleming is 1255372165. It was assigned to this individual provider in the NPPES registry on June 10, 2006.

Where is Gregory Fleming located?

Gregory Fleming practices at 26 Madison Ave, Morristown, NJ 07960. The listed phone number is (973) 267-1851.

What is Gregory Fleming's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

When was this NPI record last updated?

The NPPES record for Gregory Fleming was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 36 days 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.