DR. CYRUS A MIRSHAB MD
NPI 1720118573
Anesthesiology in Louisville, CO
About Dr. Cyrus A Mirshab Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CYRUS A MIRSHAB MD (NPI 1720118573) is an individual anesthesiology provider in Louisville, Colorado, licensed in Colorado (39165) and active in the NPI registry since March 2007. He is enrolled in Medicare PECOS, maintains a secondary practice location in Denver, and is a graduate of University Of Colorado School Of Medicine, Denver (1998).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 2
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
Dr. Cyrus A Mirshab 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 Cyrus Mirshab reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boulder, CO 80303
- Reassigned Medicare billing, Colorado enrollment
- 93 clinicians in this Medicare group
Denver, CO 80247
- Reassigned Medicare billing, Colorado enrollment
- Medicare enrollment name: Colorado Permanente Medical Group PC
- 1,715 clinicians in this Medicare group
Sedalia, CO 80135
- Reassigned Medicare billing, Colorado enrollment
- 79 clinicians in this Medicare group
Cody, WY 82414
- Reassigned Medicare billing, Montana enrollment
- 1,264 clinicians in this Medicare group
Billings, MT 59101
- Reassigned Medicare billing, Montana enrollment
- 86 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.
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 Cyrus Mirshab's NPI number?
The NPI number for Cyrus Mirshab is 1720118573. It was assigned to this individual provider in the NPPES registry on March 7, 2007.
Where is Cyrus Mirshab located?
Cyrus Mirshab practices at 238 Clementina St, Louisville, CO 80027. The listed phone number is (303) 521-6278.
What is Cyrus Mirshab's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Cyrus Mirshab enrolled in Medicare?
Yes. Cyrus Mirshab 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 Cyrus Mirshab's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Cyrus Mirshab reassigns Medicare benefits to 5 organizations: Boulder Valley Anesthesiology, PLLC (Boulder, CO), Colorado Permanente Medical Group, P.C. (Denver, CO), Diehl Anesthesia Inc (Sedalia, CO), Billings Clinic (Cody, WY) and Granite Peak Anesthesiology Consultants (Billings, MT). 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 Cyrus Mirshab's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Cyrus Mirshab accept?
Health plans from Blue Cross and Blue Shield of Montana and Mountain Health CO-OP list Cyrus Mirshab 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 Cyrus Mirshab was last updated on April 27, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Dr. Cyrus A Mirshab, MD · NPI 1720118573
Anesthesiology physician in Louisville, Colorado. Individual provider, active in the CMS NPPES registry since March 7, 2007.
## Identity
- **NPI:** 1720118573 (Entity type: Individual)
- **Enumerated:** March 7, 2007
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 39165 (Colorado)
- **Sole proprietor:** No
## Practice location
- **Address:** 238 CLEMENTINA ST, Louisville, CO 80027-9469
- **Phone:** (303) 521-6278
## 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): Boulder Valley Anesthesiology, PLLC (NPI 1962431668, Boulder, CO); Colorado Permanente Medical Group, P.C. (NPI 1760599724, Denver, CO); Diehl Anesthesia Inc (NPI 1467833897, Sedalia, CO); Billings Clinic (NPI 1346288347, Cody, WY); Granite Peak Anesthesiology Consultants (NPI 1700637907, Billings, MT) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Colorado School Of Medicine, Denver, class of 1998
## Record status
- **NPPES last updated:** April 27, 2023
- **Other identifiers:** Other 016356; Medicaid 54380243 (CO)
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Source: [NPI Profile](https://npiprofile.com/npi/1720118573) · Data from the CMS NPPES public registry.