Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Dr Carolyn J. Harrington

Q: What type of organization is Dr Carolyn J. Harrington?

Dr Carolyn J. Harrington is registered in NPPES as a General Practice Physician (its primary provider taxonomy).

General Practice Physician in N Potomac, MD · enumerated 2007 · authorized official Carolyn Harrington, Physician.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1598948721

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Registry record

Entity type Organization (Type 2)

Legal business name Dr Carolyn J. Harrington

Other name <Unavail>

Practice address 11908 Darnestown Rd Ste A&B, N Potomac, MD, 20878

Phone (301) 208-1516

Fax (301) 208-0547

Enumeration date Dec 11, 2007

Last updated in NPPES Dec 11, 2007

Taxonomy & classification

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians Secondary

208D00000X General Practice Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Carolyn Harrington

Title Physician

Phone (301) 208-1516

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What type of organization is Dr Carolyn J. Harrington?

Dr Carolyn J. Harrington is registered in NPPES as a General Practice Physician (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-12-11.