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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

JEAN C. RYAN M.D.
NPI 1184689689
Obstetrics & Gynecology in Portsmouth, NH

Active since April 18, 2006
875 GREENLAND RD, BUILDING A-1, PORTSMOUTH, NH 03801(603) 436-1128(603) 431-4537 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Jean C. Ryan M.d. NPPES

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

JEAN C. RYAN M.D. (NPI 1184689689) is an individual obstetrics & gynecology provider in Portsmouth, New Hampshire, licensed in New Hampshire (10061) and active in the NPI registry since April 2006.

NPPES Registry Identity

NPI1184689689
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameJEAN C. RYANCredential: M.D.
Location Address875 GREENLAND RD, BUILDING A-1Portsmouth, NH 03801-4164
Mailing Address875 Greenland Rd, Building A-1Portsmouth, NH 03801-4164 · (603) 436-1128 · Fax (603) 431-4537
Phone(603) 436-1128
Fax(603) 431-4537
Sole ProprietorNo
Enumeration DateApril 18, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1184689689 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in NH · 10061
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
875 GREENLAND RD, Portsmouth, NH 03801
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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.

KELLY LUCINDA LEE MA
Counselor (Mental Health)
875 GREENLAND RD
PORTSMOUTH, NH 03801
Rockingham County (603) 717-6488
PETER G ATTENBOROUGH PA-C
Physician Assistant
875 GREENLAND RD, BLG C-4
PORTSMOUTH, NH 03801
Rockingham County (603) 431-5529
DR. SUCHARIT SURESH JOSHI M.D.
Internal Medicine (Nephrology)
875 GREENLAND RD, #C-10
PORTSMOUTH, NH 03801
Rockingham County (603) 436-3433
DR. MICHAEL CASIMIR DANIELSKI M.D.
Internal Medicine (Nephrology)
875 GREENLAND RD, #C-10
PORTSMOUTH, NH 03801
Rockingham County (603) 436-3433
DOUGLAS J BLACK MD LLC
Psychiatry & Neurology (Neurology)
875 GREENLAND RD, SUITE B4
PORTSMOUTH, NH 03801
Rockingham County (603) 427-2577
GATEWAY UROLOGY, P.A.
Urology
875 GREENLAND RD, ORCHARD PARK, BLDG C, SUITE 3
PORTSMOUTH, NH 03801
Rockingham County (603) 436-8601
DR. KATHLEEN MARIE TOIVANEN MD
Obstetrics & Gynecology
875 GREENLAND RD, ORCHARD PARK, SUITE B11
PORTSMOUTH, NH 03801
Rockingham County (603) 436-2667
STEVEN B. SPIELMAN, PH.D., P.C.
Clinical Neuropsychologist
875 GREENLAND RD, SUITE B-4
PORTSMOUTH, NH 03801
Rockingham County (603) 749-0727

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 Jean Ryan's NPI number?

The NPI number for Jean Ryan is 1184689689. It was assigned to this individual provider in the NPPES registry on April 18, 2006.

Where is Jean Ryan located?

Jean Ryan practices at 875 Greenland Rd Building A-1, Portsmouth, NH 03801. The listed phone number is (603) 436-1128.

What is Jean Ryan's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

When was this NPI record last updated?

The NPPES record for Jean Ryan 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 22 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.