Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William Brian Dobyns, M.D.

Clinical Genetics (M.D.) Physician in Chicago, IL · enumerated 2007.

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

National Provider Identifier

1538282736

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Registry record

Entity type Individual (Type 1)

Name William Brian Dobyns

Credential M.D.

Sex Male

Practice address 5841 S Maryland Ave, Mc 0077, Chicago, IL, 60637

Phone (773) 834-0525

Fax (773) 834-0505

Enumeration date Apr 10, 2007

Last updated in NPPES Jul 20, 2010

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 036-099156 (IL) Secondary

207SG0201X Clinical Genetics (M.D.) Physician Allopathic & Osteopathic Physicians · License MD60152986 (WA) Primary

2084N0402X Neurology with Special Qualifications in Child Neurology Physician Allopathic & Osteopathic Physicians · License MD60152986 (WA) Secondary

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
036099156	Medicaid	IL	-

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 William Dobyns's NPI record?

Cross-check NPI 1538282736 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1538282736 active?

Yes, as of the latest NPPES snapshot, NPI 1538282736 is active (record last updated 2010-07-20).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-07-20.