Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Catherine Butkus Small, MD

Infectious Disease Physician in Valhalla, NY · enumerated 2006.

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

National Provider Identifier

1881617520

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Registry record

Entity type Individual (Type 1)

Name Catherine Butkus Small

Credential MD

Sex Female

Practice address 100 Woods Road-Nymc, Dept of Medicine-, Valhalla, NY, 10595

Phone (914) 493-8865

Fax (914) 594-4434

Enumeration date Jul 25, 2006

Last updated in NPPES Oct 10, 2014

Taxonomy & licenses

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License 136538 (NY) Primary

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
00835667	Medicaid	NY	-
17D863	Other	NY	EMPIRE BCBS
007902	Other	NY	CONNECTICARE
136538	Other	NY	HIP
P967452	Other	NY	OXFORD
SC6538	Other	NY	ATLANTIS
0006077	Other	NY	GHI PPO
2234414	Other	NY	AETNA HMO
440002970	Other	NY	RAILROAD MEDICARE
4655736	Other	NY	AETNA PPO
5C6268	Other	NY	HEALTHNET

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

How do I verify Catherine Small's NPI record?

Cross-check NPI 1881617520 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1881617520 active?

Yes, as of the latest NPPES snapshot, NPI 1881617520 is active (record last updated 2014-10-10).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-10-10.