MARCUS HENRY BIRKY D.O.
NPI 1871836528
Anesthesiology in Billings, MT
About Marcus Henry Birky D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARCUS HENRY BIRKY D.O. (NPI 1871836528) is an individual anesthesiology provider in Billings, Montana, licensed in Montana (MED-PHYS-LIC-55120) and active in the NPI registry since April 2013. He is enrolled in Medicare PECOS, is affiliated with St. Patrick Hospital, and is a graduate of Other (2013).
NPPES Registry Identity
Specialties & Licenses
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
Marcus Henry Birky D.o. 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
2Medicare enrollment records show Marcus Birky reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Billings, MT 59101
- Reassigned Medicare billing, Montana enrollment
- 1,264 clinicians in this Medicare group
Missoula, MT 59808
- Reassigned Medicare billing, Montana enrollment
- Medicare enrollment name: Missoula Anesthesiology PC
- 55 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 6
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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St. Patrick Hospital
Acute Care Hospitals · Missoula, MTCommunity Medical Center
Acute Care Hospitals · Missoula, MTMedicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
BILLINGS, MT 59101
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 Marcus Birky's NPI number?
The NPI number for Marcus Birky is 1871836528. It was assigned to this individual provider in the NPPES registry on April 1, 2013.
Where is Marcus Birky located?
Marcus Birky practices at 2800 10th Ave N, Billings, MT 59101. The listed phone number is (406) 945-4195.
What is Marcus Birky's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Marcus Birky enrolled in Medicare?
Yes. Marcus Birky 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 Marcus Birky's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marcus Birky reassigns Medicare benefits to 2 organizations: Billings Clinic (Billings, MT) and Missoula Anesthesiology, P.C. (Missoula, 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 Marcus Birky's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Marcus Birky accept?
Health plans from Blue Cross and Blue Shield of Montana and Mountain Health CO-OP list Marcus Birky 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.
Is Marcus Birky affiliated with any hospitals?
According to CMS data, Marcus Birky is affiliated with St. Patrick Hospital and Community Medical Center.
When was this NPI record last updated?
The NPPES record for Marcus Birky was last updated on January 29, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Marcus Henry Birky, D.O. · NPI 1871836528
Anesthesiology physician in Billings, Montana. Individual provider, active in the CMS NPPES registry since April 1, 2013.
## Identity
- **NPI:** 1871836528 (Entity type: Individual)
- **Enumerated:** April 1, 2013
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** MED-PHYS-LIC-55120 (Montana)
- **Sole proprietor:** No
## Practice location
- **Address:** 2800 10TH AVE N, Billings, MT 59101-0703
- **Phone:** (406) 945-4195
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Billings Clinic (NPI 1326104845, Billings, MT); Missoula Anesthesiology, P.C. (NPI 1710931225, Missoula, MT) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2013
## Record status
- **NPPES last updated:** January 29, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1871836528) · Data from the CMS NPPES public registry.