Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Brian David Williams, MD

Individual provider Anesthesiology Physician · NPI 1215917729

Brian David Williams, MD practises Anesthesiology in Phoenix, Arizona. Graduated from Medical College of Wisconsin in 1986, 40 years ago. Practices with Battle Born Anesthesia Associates Ltd, a 25-clinician group and accepts Medicare assignment. Licensed in Arizona.

Years since qualifying
40
Trained at
Medical College of Wisconsin
Licensed in
AZ
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1850 N Central Ave Ste 1600
Phoenix, AZ 85004-4633
Phone: (602) 744-4765
Fax: (602) 744-4799
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 34590 (AZ)

Record details

NPI number1215917729
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 19, 2006
Last updated in NPPESNovember 21, 2018

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyANESTHESIOLOGY
Medical schoolMEDICAL COLLEGE OF WISCONSIN
Graduated 1986 (40 years in practice)
Group practice Battle Born Anesthesia Associates Ltd — 25 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients122
Services billed 126 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Kingman Regional Medical Center Hospital · Kingman, AZ

Colleagues at Battle Born Anesthesia Associates Ltd

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 25 clinicians in the practice; 7 are shown here.

Other providers in Phoenix