Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Catherine E Rittenhouse, N.P.

Obstetrics & Gynecology Nurse Practitioner in Harrisonburg, VA · enumerated 2006 · practices at Harrisonburg Ob Gyn Associates PC.

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

National Provider Identifier

1013004704

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Registry record

Entity type Individual (Type 1)

Name Catherine E Rittenhouse

Credential N.P.

Sex Female

Practice address 2291 Evelyn Byrd Ave, Harrisonburg, VA, 22801

Phone (540) 434-3831

Fax (540) 432-0518

Enumeration date Oct 6, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

363LX0001X Obstetrics & Gynecology Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 0024150311 (VA) Primary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP credential

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 specialty is Catherine Rittenhouse?

Catherine Rittenhouse is registered in NPPES with the primary taxonomy of Obstetrics & Gynecology Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.