Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Gerald Franz Karnow, M.D.

General Practice Physician in Spring Valley, NY · enumerated 2006 · practices at Rudolf Steiner Fellowship Foundation, Inc..

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

National Provider Identifier

1124131578

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Registry record

Entity type Individual (Type 1)

Name Dr. Gerald Franz Karnow

Credential M.D.

Sex Male

Practice address 241 Hungry Hollow Rd, Spring Valley, NY, 10977

Phone (845) 356-8494

Fax (845) 356-8468

Enumeration date Aug 17, 2006

Last updated in NPPES Jun 20, 2018

Taxonomy & licenses

208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License 128601 (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
336611	Other	NY	MEDICARE PROVIDER NUMBER

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 Gerald Karnow?

Gerald Karnow is registered in NPPES with the primary taxonomy of General Practice Physician. 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.

Other providers at this practice address

Browse all →

Christine Bordas Adult Health Nurse Practitioner · Chestnut Ridge, NY NPI 1467405076 Yuklin Ling Emergency Medicine Physician · Chestnut Ridge, NY NPI 1508979378 Rudolf Steiner Fellowship Foundation, Inc. General Practice Physician · Spring Valley, NY NPI 1487800868 Francisca Struve-Entelis Registered Nurse · Spring Valley, NY NPI 1265845226 Nicole Maikish Registered Nurse · Chestnut Ridge, NY NPI 1891302550

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-06-20.