Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ali E. Guy, M.D.

Physical Medicine & Rehabilitation Physician in Jericho, NY · enumerated 2006 · practices at Mid-Island Physical Medicine and Rehabilitation, P.C..

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

National Provider Identifier

1588722623

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Registry record

Entity type Individual (Type 1)

Name Ali E. Guy

Credential M.D.

Sex Male

Practice address Jericho, NY, 11753

Phone (516) 338-5182

Fax (516) 338-5184

Enumeration date Dec 4, 2006

Last updated in NPPES Jul 9, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians · License 163001 (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
4262667	Other	NY	AETNA US HEALTH
0056095	Other	NY	AETNA US HEALTH 2ND LOCA
21Z591	Other	NY	BCBS
163001	Other	NY	MAGNACARE
49D091	Other	NY	BCBS 2ND LOCATION
28738P	Other	NY	HIP
P593134	Other	NY	OXFORD 2ND LOCATION
000886	Other	NY	GHI 2ND LOCATION
28737P	Other	NM	HIP 2ND LOCATION
P592835	Other	NY	OXFORD #1

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

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.

What specialty is Ali Guy?

Ali Guy is registered in NPPES with the primary taxonomy of Physical Medicine & Rehabilitation Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Mid-Island Physical Medicine and Rehabilitation, P.C. Physical Medicine & Rehabilitation Physician · Jericho, NY NPI 1710146857

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.