Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alan J. Simmons, MD

Q: What is the NPI number for Alan Simmons?

The National Provider Identifier (NPI) for Alan Simmons is 1083818561, a Type 1 (individual) record in the CMS NPPES registry.

Hospitalist Physician in Mchenry, IL · enumerated 2007.

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

National Provider Identifier

1083818561

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Registry record

Entity type Individual (Type 1)

Name Alan J. Simmons

Credential MD

Sex Male

Practice address 4309 W Medical Center Dr, Mob A102, Mchenry, IL, 60050

Phone (815) 338-6600

Enumeration date Jun 11, 2007

Last updated in NPPES Jul 21, 2022

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 43972 (KY) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 45612 (TN) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 45612 (TN) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 036136647 (IL) 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
000000695031	Other	KY	ANTHEM-CMA
000057094U	Other	KY	HUMANA-CMA
4321218	Other	TN	BLUE CROSS-BLUE SHIELD
1527128	Medicaid	TN	-
7100149020	Medicaid	KY	-
50031519	Other	KY	PASSPORT-CMA
122637	Other	KY	SIHO-CMA
2400911	Other	KY	CIGNA-CMA
201013040	Medicaid	IN	-
P01027597	Other	TN	RR 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Alan Simmons practice?

The practice location on file with NPPES is in Mchenry, IL. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Alan Simmons?

The National Provider Identifier (NPI) for Alan Simmons is 1083818561, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Karen Filipowski Certified Registered Nurse Anesthetist · Mchenry, IL NPI 1386649382 Anthony Grande Gastroenterology Physician · Mchenry, IL NPI 1477558377 Pulmonary, Critical Care & Sleep Medicine Specialists, S. C./Mchenry Critical Care Medicine (Internal Medicine) Physician · Mchenry, IL NPI 1184617318 Robert Halstead Pediatrics Physician · Mchenry, IL NPI 1003874827 James Mowery Internal Medicine Physician · Mchenry, IL NPI 1225086143 Susan Wilde Pediatric Nurse Practitioner · Mchenry, IL NPI 1144279100 Syed Ghani Adolescent Medicine (Internal Medicine) Physician · Mchenry, IL NPI 1205877396 David Hansen Certified Registered Nurse Anesthetist · Mchenry, IL NPI 1558303669

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.