Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Steven E. Mayer, M.D.

Physical Medicine & Rehabilitation Physician in Warrenville, IL · enumerated 2006.

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

National Provider Identifier

1568427557

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Registry record

Entity type Individual (Type 1)

Name Steven E. Mayer

Credential M.D.

Sex Male

Practice address 27650 Ferry Rd, Suite 100, Warrenville, IL, 60555

Phone (630) 225-2663

Fax (630) 225-2399

Enumeration date Apr 20, 2006

Last updated in NPPES Jan 22, 2018

Taxonomy & licenses

2081S0010X Sports Medicine (Physical Medicine & Rehabilitation) Physician Allopathic & Osteopathic Physicians · License 036-114944 (IL) Secondary

208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians · License 036-114944 (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
P01131078	Other	IL	RR MEDICARE
036-114944	Medicaid	IL	-
206147174	Other	IL	MEDICARE INDVIDUAL PTAN
206147	Other	IL	MEDICARE GROUP PTAN

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 Steven Mayer?

Steven Mayer 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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Brian Babka Sports Medicine (Family Medicine) Physician · Warrenville, IL NPI 1881688638 David Watt Orthopaedic Surgery Physician · Warrenville, IL NPI 1689663874 Mary Ling Orthopaedic Hand Surgery Physician · Warrenville, IL NPI 1891784005 Matthew Gimre Sports Medicine (Family Medicine) Physician · Warrenville, IL NPI 1154310365 Richard Thomas Orthopaedic Hand Surgery Physician · Warrenville, IL NPI 1366431561 Rachel Cisko Podiatrist · Warrenville, IL NPI 1235128448 Lenard Labelle Orthopaedic Surgery Physician · Warrenville, IL NPI 1679562870 Mary Norek Physical Medicine & Rehabilitation Physician · Warrenville, IL NPI 1295724490

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-01-22.