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Cynthia D Byler, D.O.

Occupational Medicine Physician in Saint Louis, MO · enumerated 2006.

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

National Provider Identifier

1649373994

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Registry record

Entity type Individual (Type 1)
Name Cynthia D Byler
Credential D.O.
Sex Female
Practice address 1050 Old Des Peres Rd, Suite 100, Saint Louis, MO, 63131
Phone (314) 569-0612
Fax (314) 966-0664
Enumeration date Sep 5, 2006
Last updated in NPPES Oct 25, 2012

Taxonomy & licenses

2083X0100X Occupational Medicine Physician Allopathic & Osteopathic Physicians · License DO R1G13 (MO) 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

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

How do I verify Cynthia Byler's NPI record?
Cross-check NPI 1649373994 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1649373994 active?
Yes, as of the latest NPPES snapshot, NPI 1649373994 is active (record last updated 2012-10-25).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-10-25.