MICHAEL J ASH MD
NPI 1528022365
Anesthesiology in Grand Junction, CO
About Michael J Ash Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL J ASH MD (NPI 1528022365) is an individual anesthesiology provider in Grand Junction, Colorado, licensed in Colorado (38152) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Texas Medical School At Houston (1993).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 4
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Michael J Ash Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
5Medicare enrollment records show Michael Ash reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Grand Junction, CO 81501
- Reassigned Medicare billing, Colorado enrollment
- 438 clinicians in this Medicare group
Grand Junction, CO 81501
- Reassigned Medicare billing, Colorado enrollment
- 32 clinicians in this Medicare group
Grand Junction, CO 81507
- Reassigned Medicare billing, Colorado enrollment
- Also billed through NPI 1861496697 (Colorado)
- 104 clinicians in this Medicare group
Edwards, CO 81632
- Reassigned Medicare billing, Colorado enrollment
- 128 clinicians in this Medicare group
Greenwood Village, CO 80111
- Reassigned Medicare billing, Colorado enrollment
- 971 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Michael Ash's NPI number?
The NPI number for Michael Ash is 1528022365. It was assigned to this individual provider in the NPPES registry on April 17, 2006.
Where is Michael Ash located?
Michael Ash practices at 2021 N 12th St, Grand Junction, CO 81501. The listed phone number is (970) 242-0920.
What is Michael Ash's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Michael Ash enrolled in Medicare?
Yes. Michael Ash is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Michael Ash's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Ash reassigns Medicare benefits to 5 organizations: Intermountain Medical Group Grand Junction, LLC (Grand Junction, CO), Anesthesia Consultants Of Western Colorado LLC (Grand Junction, CO), Lower Valley Hospital Association (Grand Junction, CO), Anesthesia Partners Of Colorado (Edwards, CO) and Us Anesthesia Partners Of Colorado Inc. (Greenwood Village, CO). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Michael Ash's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Michael Ash accept?
Health plans from Select Health list Michael Ash as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Michael Ash was last updated on November 20, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Michael J Ash, MD · NPI 1528022365
Anesthesiology physician in Grand Junction, Colorado. Individual provider, active in the CMS NPPES registry since April 17, 2006.
## Identity
- **NPI:** 1528022365 (Entity type: Individual)
- **Enumerated:** April 17, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 38152 (Colorado)
- **Sole proprietor:** No
## Practice location
- **Address:** 2021 N 12TH ST, Grand Junction, CO 81501-2980
- **Phone:** (970) 242-0920
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 5 organizations under Medicare reassignment (form CMS-855R): Intermountain Medical Group Grand Junction, LLC (NPI 1770196917, Grand Junction, CO); Anesthesia Consultants Of Western Colorado LLC (NPI 1437112273, Grand Junction, CO); Lower Valley Hospital Association (NPI 1194323832, Grand Junction, CO); Anesthesia Partners Of Colorado (NPI 1457702409, Edwards, CO); Us Anesthesia Partners Of Colorado Inc. (NPI 1922365782, Greenwood Village, CO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Texas Medical School At Houston, class of 1993
## Record status
- **NPPES last updated:** November 20, 2014
- **Other identifiers:** Medicare PIN C105158; Medicaid 72622067 (CO); Medicaid T0230 (UT); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1528022365) · Data from the CMS NPPES public registry.