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

Dr. William Louis Harrison, MD

Individual provider Anesthesiology Physician · NPI 1144281924

Dr. William Louis Harrison, MD is an Anesthesiology in Fort Collins, Colorado. Graduated from University of Colorado School of Medicine, Denver in 1994, 32 years ago. Practices with Northern Colorado Anesthesia Professionals PLLC, a 155-clinician group and accepts Medicare assignment. Licensed in Colorado and Nebraska.

Years since qualifying
32
Trained at
University of Colorado School of Medicine, Denver
Licensed in
CO, NE
In the registry since
2006
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

1236 E Elizabeth St Ste 1
Fort Collins, CO 80524-4000
Phone: (970) 224-2985
Fax: (970) 472-9381
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence DR.0036326 (CO)
Anesthesiology Physician Taxonomy 207L00000X · Licence 24629 (NE)

Record details

NPI number1144281924
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 31, 2006
Last updated in NPPESJune 6, 2013

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolUNIVERSITY OF COLORADO SCHOOL OF MEDICINE, DENVER
Graduated 1994 (32 years in practice)
Group practice Northern Colorado Anesthesia Professionals Pllc — 155 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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