MARK F GARNAAS M.D.
NPI 1326088394
Obstetrics & Gynecology in Rockport, ME
About Mark F Garnaas M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK F GARNAAS M.D. (NPI 1326088394) is an individual obstetrics & gynecology provider in Rockport, Maine, licensed in Montana (8226) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with St James Healthcare, and maintains a secondary practice location in Missoula.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
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
Mark F Garnaas M.d. 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 Reassignment
Medicare enrollment records show Mark Garnaas reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Boulder, MT 59632
- Reassigned Medicare billing, Montana enrollment
- 278 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 2
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 James Healthcare
Acute Care Hospitals · Butte, MTUtah Valley Hospital
Acute Care Hospitals · Provo, UTPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 04856 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ROCKPORT, ME 04856
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 Mark Garnaas's NPI number?
The NPI number for Mark Garnaas is 1326088394. It was assigned to this individual provider in the NPPES registry on June 7, 2006.
Where is Mark Garnaas located?
Mark Garnaas practices at 3 Glen Cove Dr, Rockport, ME 04856. The listed phone number is (406) 544-8051.
What is Mark Garnaas's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Mark Garnaas enrolled in Medicare?
Yes. Mark Garnaas 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 organization bills Medicare for Mark Garnaas's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Garnaas reassigns Medicare benefits to Scl Health Medical Group-Butte LLC (Boulder, MT). The 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 Mark Garnaas's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Garnaas accept?
Health plans from Blue Cross and Blue Shield of Montana, Mountain Health CO-OP, PacificSource Health Plans and Providence Health Plan list Mark Garnaas 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 Mark Garnaas affiliated with any hospitals?
According to CMS data, Mark Garnaas is affiliated with St James Healthcare and Utah Valley Hospital.
When was this NPI record last updated?
The NPPES record for Mark Garnaas was last updated on June 6, 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.
# Mark F Garnaas, M.D. · NPI 1326088394
Obstetrics & Gynecology physician in Rockport, Maine. Individual provider, active in the CMS NPPES registry since June 7, 2006.
## Identity
- **NPI:** 1326088394 (Entity type: Individual)
- **Enumerated:** June 7, 2006
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 8226 (Montana)
- **Sole proprietor:** No
## Practice location
- **Address:** 3 GLEN COVE DR, Rockport, ME 04856-4232
- **Phone:** (406) 544-8051
## 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:** Scl Health Medical Group-Butte LLC (NPI 1861031122, Boulder, MT), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Washington School Of Medicine, class of 1986
## Record status
- **NPPES last updated:** June 6, 2020
- **Other identifiers:** Medicaid 0024242 (MT)
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Source: [NPI Profile](https://npiprofile.com/npi/1326088394) · Data from the CMS NPPES public registry.