MICHAEL SISK MD
NPI 1700802535
Orthopaedic Surgery in Lander, WY
About Michael Sisk Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL SISK MD (NPI 1700802535) is an individual orthopaedic surgery provider in Lander, Wyoming, licensed in Colorado (37745) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Cherry County Hospital, and is a graduate of University Of Colorado School Of Medicine, Denver (2005).
NPPES Registry Identity
Specialties & Licenses
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
Michael Sisk 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
6Medicare enrollment records show Michael Sisk reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Rock Springs, WY 82901
- Reassigned Medicare billing, Wyoming enrollment
- 11 clinicians in this Medicare group
Rock Springs, WY 82901
- Reassigned Medicare billing, Wyoming enrollment
- Also billed through NPI 1972743011 (Wyoming)
- 18 clinicians in this Medicare group
Steamboat Springs, CO 80487
- Reassigned Medicare billing, Wyoming enrollment
- 6 clinicians in this Medicare group
Chadron, NE 69337
- Reassigned Medicare billing, Nebraska enrollment
- 42 clinicians in this Medicare group
Sidney, NE 69162
- Reassigned Medicare billing, Nebraska enrollment
- 70 clinicians in this Medicare group
Valentine, NE 69201
- Reassigned Medicare billing, Nebraska enrollment
- Also billed through NPI 1518066513 (Nebraska)
- 20 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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Cherry County Hospital
Critical Access Hospitals · Valentine, NESidney Regional Medical Center
Critical Access Hospitals · Sidney, NESouth Lincoln Medical Center - Cah
Critical Access Hospitals · Kemmerer, WYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 82520 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 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LANDER, WY 82520
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 Sisk's NPI number?
The NPI number for Michael Sisk is 1700802535. It was assigned to this individual provider in the NPPES registry on July 14, 2006.
Where is Michael Sisk located?
Michael Sisk practices at 8185 Highway 789, Lander, WY 82520. The listed phone number is (307) 206-9300.
What is Michael Sisk's specialty?
The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.
Is Michael Sisk enrolled in Medicare?
Yes. Michael Sisk 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 Sisk's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Sisk reassigns Medicare benefits to 6 organizations: Aspen Mountain Physician Practice Management LLC (Rock Springs, WY), South Lincoln Hospital District (Rock Springs, WY), Orthopaedics Of Steamboat Springs PC (Steamboat Springs, CO), Chadron Community Hospital Corp. (Chadron, NE), Cheyenne County Hospital Association Inc (Sidney, NE) and 1 more organization, listed in the Medicare section above. 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 Sisk's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Michael Sisk accept?
Health plans from Ambetter Health, Ambetter from Sunflower Health Plan, Avera Health Plans, Blue Cross Blue Shield of Wyoming and Blue Cross and Blue Shield of Nebraska and 5 other insurers list Michael Sisk 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 Michael Sisk affiliated with any hospitals?
According to CMS data, Michael Sisk is affiliated with Cherry County Hospital, Sidney Regional Medical Center and South Lincoln Medical Center - Cah.
When was this NPI record last updated?
The NPPES record for Michael Sisk was last updated on March 31, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months 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 Sisk, MD · NPI 1700802535
Orthopaedic Surgery physician in Lander, Wyoming. Individual provider, active in the CMS NPPES registry since July 14, 2006.
## Identity
- **NPI:** 1700802535 (Entity type: Individual)
- **Enumerated:** July 14, 2006
- **Primary specialty:** Orthopaedic Surgery · taxonomy 207X00000X
- **State license:** 37745 (Colorado)
- **Sole proprietor:** No
## Practice location
- **Address:** 8185 HIGHWAY 789, Lander, WY 82520-2942
- **Phone:** (307) 206-9300 · **Fax:** (307) 222-7977
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Aspen Mountain Physician Practice Management LLC (NPI 1932766706, Rock Springs, WY); South Lincoln Hospital District (NPI 1649803271, Rock Springs, WY); Orthopaedics Of Steamboat Springs PC (NPI 1073538401, Steamboat Springs, CO); Chadron Community Hospital Corp. (NPI 1467675629, Chadron, NE); Cheyenne County Hospital Association Inc (NPI 1487736963, Sidney, NE); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Colorado School Of Medicine, Denver, class of 2005
## Record status
- **NPPES last updated:** March 31, 2026
- **Other identifiers:** Medicaid 58828737 (CO)
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Source: [NPI Profile](https://npiprofile.com/npi/1700802535) · Data from the CMS NPPES public registry.