Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John Francis Ferguson, M.D.

Pulmonary Disease Physician in Middletown, NY · enumerated 2006.

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

National Provider Identifier

1841245560

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Registry record

Entity type Individual (Type 1)

Name Dr. John Francis Ferguson

Credential M.D.

Sex Male

Practice address 111 Maltese Dr, Middletown, NY, 10940

Phone (845) 342-4774

Fax (845) 818-7555

Enumeration date May 23, 2006

Last updated in NPPES Jan 24, 2018

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 177820 (NY) Secondary

207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 177820 1 (NY) Secondary

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License 177820 1 (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
1410879	Medicaid	NY	-
110101051	Other	NY	RAILROAD MEDICARE

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

What specialty is John Ferguson?

John Ferguson is registered in NPPES with the primary taxonomy of Pulmonary Disease 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-01-24.