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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark William Steehler, D.O.

Otolaryngology Physician in Winter Park, FL · enumerated 2011.

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

National Provider Identifier

1538453667

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Registry record

Entity type Individual (Type 1)
Name Dr. Mark William Steehler
Credential D.O.
Sex Male
Practice address 7251 University Blvd Ste 300, Winter Park, FL, 32792
Phone (407) 677-0099
Enumeration date Jun 6, 2011
Last updated in NPPES Sep 17, 2018

Taxonomy & licenses

207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License OS14977 (FL) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier Type State Issuer
000941985001 Other NY BLUECROSS BLUESHIELD OF WNY
04495112 Medicaid NY -
284191 Other NY NY LICENSE

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 NPI 1538453667 active?
Yes, as of the latest NPPES snapshot, NPI 1538453667 is active (record last updated 2018-09-17).
How do I verify Mark Steehler's NPI record?
Cross-check NPI 1538453667 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-09-17.