Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. William H Hass, MD

Individual provider Anesthesiology Physician · NPI 1801871637

Dr. William H Hass, MD is an Anesthesiology in Huntsville, Alabama. Graduated from Medical College of Wisconsin in 1972, 54 years ago. Practices with Gut PC, a 51-clinician group and accepts Medicare assignment. Licensed in Alabama.

Years since qualifying
54
Trained at
Medical College of Wisconsin
Licensed in
AL
In the registry since
2005
Specialties on file
2
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

1 Hospital Dr SW Anesthesiology Dept
Huntsville, AL 35801-6455
Phone: (256) 880-4187
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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 19501 (AL)
Pain Medicine (Anesthesiology) Physician Taxonomy 207LP2900X · Licence 19501 (AL)

Record details

NPI number1801871637
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedDecember 14, 2005
Last updated in NPPESJanuary 15, 2013

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Also practisesPAIN MANAGEMENT
Medical schoolMEDICAL COLLEGE OF WISCONSIN
Graduated 1972 (54 years in practice)
Group practice Gut Pc — 51 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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