Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Christopher James Farrell, MD

Neurological Surgery Physician in Philadelphia, PA · enumerated 2007.

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

National Provider Identifier

1922134394

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Registry record

Entity type Individual (Type 1)

Name Dr. Christopher James Farrell

Credential MD

Sex Male

Practice address 909 Walnut St, 2nd Floor, Philadelphia, PA, 19107

Phone (215) 955-7000

Fax (215) 503-7007

Enumeration date Feb 27, 2007

Last updated in NPPES Jan 6, 2026

Taxonomy & licenses

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License MD439860 (PA) Primary

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License 25MA09202300 (NJ) Secondary

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License L-223111 (MA) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
0237027	Medicaid	NJ	-
102492973	Medicaid	PA	-

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.

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Frequently asked questions

How do I verify Christopher Farrell's NPI record?

Cross-check NPI 1922134394 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1922134394 active?

Yes, as of the latest NPPES snapshot, NPI 1922134394 is active (record last updated 2026-01-06).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-01-06.