National Provider Identifier Database

MICHAEL WILLIAM, MD – NPI #1669931440
Sleep Medicine

An Internist who practices Sleep Medicine is certified in the subspecialty of sleep medicine and specializes in the clinical assessment, physiologic testing, diagnosis, management and prevention of sleep and circadian rhythm disorders. Sleep specialists treat patients of any age and use multidisciplinary approaches. Disorders managed by sleep specialists include, but are not limited to, sleep related breathing disorders, insomnia, hypersomnias, circadian rhythm sleep disorders, parasomnias and sleep related movement disorders.


Contact Information

MICHAEL WILLIAM, MD
2840 LEGACY DR STE 400
FRISCO, TX75034-6055
Phone: 469-200-6100
Fax:
Website:
Specialty Taxonomy Code
* Sleep Medicine 207RS0012X
Internal Medicine 207R00000X

* Indicates primary specialty

NPI Profile & details for MICHAEL WILLIAM

NPI Number 1669931440
Credentials MD
Entity Individual
Enumeration date 03/19/2019
Last updated 03/06/2026 - About 3 months ago
Sole proprietor1 Yes
Identifiers
  • TX License #: U2037
Hospital affiliation n/a

1 A sole proprietor/sole proprietorship is an individual, and as such, is eligible for a single NPI number. The sole proprietor must apply for the NPI number using his or her own Social Security Number (SSN), not an Employer Identification Number (EIN) even if he/she has an EIN.

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