Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Carolyn Gretchen Ryan, D.O.

Q: What is the NPI number for Carolyn Ryan?

The National Provider Identifier (NPI) for Carolyn Ryan is 1174603609, a Type 1 (individual) record in the CMS NPPES registry.

Family Medicine Physician in Warrington, PA · enumerated 2006.

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

National Provider Identifier

1174603609

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Registry record

Entity type Individual (Type 1)

Name Dr. Carolyn Gretchen Ryan

Credential D.O.

Sex Female

Practice address 847 Easton Rd, Suite 2500, Warrington, PA, 18976

Phone (215) 918-5555

Fax (215) 918-5560

Enumeration date Oct 17, 2006

Last updated in NPPES Jun 23, 2008

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License OS007259L (PA) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
4248146	Other	PA	AETNA
715760	Other	PA	BLUE SHIELD
P00075065	Other	PA	RAILROAD MEDICARE
0552322000	Other	PA	KEYSTONE / IBC
1244173	Other	PA	CIGNA

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

Where does Carolyn Ryan practice?

The practice location on file with NPPES is in Warrington, PA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Carolyn Ryan?

The National Provider Identifier (NPI) for Carolyn Ryan is 1174603609, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-23.