DR. GREGORY D SEIDEL MD
NPI 1437138757
Pathology - Dermatopathology in Portsmouth, NH

Active since January 13, 2006
155 BORTHWICK AVE, SUITE 201 WEST, PORTSMOUTH, NH 03801(978) 691-5690 Get Directions Write a Review

NPPES record last updated: December 3, 2018. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Dec 3, 2018, Dec 16, 2016 (2 updates tracked since 2016).

About Dr. Gregory D Seidel Md NPPES

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

DR. GREGORY D SEIDEL MD (NPI 1437138757) is an individual dermatopathology provider in Portsmouth, New Hampshire, licensed in New Hampshire (14900) and active in the NPI registry since January 2006.

NPPES Registry Identity

NPI1437138757
Entity TypeIndividualMale
Primary Taxonomy207ZD0900X
Provider Legal NameDR. GREGORY D SEIDELCredential: MD
Location Address155 BORTHWICK AVE, SUITE 201 WESTPortsmouth, NH 03801-7156
Mailing Address280 Merrimack St Ste 311Lawrence, MA 01843-1779 · (978) 691-5690
Sole ProprietorNo
Enumeration DateJanuary 13, 2006
Last NPPES UpdateDecember 3, 20182 updates tracked since enumeration
NPI 1437138757 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyPathology · DermatopathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZD0900X
License Licensed in NH · 14900
Definition

A dermatopathologist is an expert in diagnosing and monitoring diseases of the skin including infectious, immunologic, degenerative, and neoplastic diseases. This entails the examination and interpretation of specially prepared tissue sections, cellular scrapings, and smears of skin lesions by means of light microscopy, electron microscopy, and fluorescence microscopy.

Also ListedPathology · Anatomic PathologyTaxonomy 207ZP0101X · License 14900 (NH)
155 BORTHWICK AVE, Portsmouth, NH 03801

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.

Dietitian, Registered
155 BORTHWICK AVE
PORTSMOUTH, NH 03801
Internal Medicine
155 BORTHWICK AVE, SUITE 202W
PORTSMOUTH, NH 03801
Naturopath
155 BORTHWICK AVE, WEST #102
PORTSMOUTH, NH 03801
Naturopath
155 BORTHWICK AVE
PORTSMOUTH, NH 03801
Optometrist
155 BORTHWICK AVE, SUITE 200 EAST
PORTSMOUTH, NH 03801
Dermatology (Dermatopathology)
155 BORTHWICK AVE, SUITE 201 WEST
PORTSMOUTH, NH 03801
Optometrist
155 BORTHWICK AVE
PORTSMOUTH, NH 03801
Naturopath
155 BORTHWICK AVE, WEST SUITE 102
PORTSMOUTH, NH 03801

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 Seidel's NPI number?

The NPI number for Gregory Seidel is 1437138757. It was assigned to this individual provider in the NPPES registry on January 13, 2006.

Where is Gregory Seidel located?

Gregory Seidel practices at 155 Borthwick Ave Suite 201 West, Portsmouth, NH 03801. The listed phone number is (978) 691-5690.

What is Gregory Seidel's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Dermatopathology, with taxonomy code 207ZD0900X.

When was this NPI record last updated?

The NPPES record for Gregory Seidel was last updated on December 3, 2018. NPI Profile syncs with the weekly NPPES data releases published by CMS.