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

Michael J Ash, MD

Individual provider Anesthesiology Physician · NPI 1528022365

Michael J Ash, MD practises Anesthesiology in Grand Junction, Colorado. Graduated from University of Texas Medical School at Houston in 1993, 33 years ago. Practices with Anesthesia Consultants of Western Colorado, PLLC, a 28-clinician group and accepts Medicare assignment. Licensed in Colorado.

Years since qualifying
33
Trained at
University of Texas Medical School at Houston
Licensed in
CO
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

2021 N 12th St
Grand Junction, CO 81501-2980 Not confirmed with CMS for 11 years — call before visiting
Phone: (970) 242-0920
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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 38152 (CO)

Record details

NPI number1528022365
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 17, 2006
Last updated in NPPESNovember 20, 2014

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolUNIVERSITY OF TEXAS MEDICAL SCHOOL AT HOUSTON
Graduated 1993 (33 years in practice)
Group practice Anesthesia Consultants Of Western Colorado, Pllc — 28 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 patients190
Services billed 257 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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.

  • Intermountain Health St. Mary'S Regional Hospital Hospital · Grand Junction, CO
  • Vail Health Hospital Hospital · Vail, CO

Colleagues at Anesthesia Consultants of Western Colorado, PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 28 clinicians in the practice; 12 are shown here.

Other providers in Grand Junction