DR. JOHN THIESZEN M.D.
NPI 1285667816
Hospitalist in Billings, MT
About Dr. John Thieszen M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN THIESZEN M.D. (NPI 1285667816) is an individual hospitalist provider in Billings, Montana, licensed in Colorado (47210) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 5
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. John Thieszen M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show John Thieszen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Fort Collins, CO 80528
- Reassigned Medicare billing, Colorado enrollment
- 163 clinicians in this Medicare group
Sterling, CO 80751
- Reassigned Medicare billing, Colorado and Wyoming enrollments
- Also billed through NPI 1891236584 (Wyoming)
- 76 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 59102 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare 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.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BILLINGS, MT 59102
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 John Thieszen's NPI number?
The NPI number for John Thieszen is 1285667816. It was assigned to this individual provider in the NPPES registry on July 8, 2006.
Where is John Thieszen located?
John Thieszen practices at 3528 Gabel Rd, Billings, MT 59102. The listed phone number is (970) 391-0572.
What is John Thieszen's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is John Thieszen enrolled in Medicare?
Yes. John Thieszen is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for John Thieszen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Thieszen reassigns Medicare benefits to 2 organizations: Banner Hospital Based Physicians Colorado LLC (Fort Collins, CO) and Rural Physicians Group - Pannu PLLC (Sterling, 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 John Thieszen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Thieszen accept?
Health plans from Blue Cross Blue Shield of Wyoming list John Thieszen 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 John Thieszen was last updated on December 6, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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. John Thieszen, M.D. · NPI 1285667816
Hospitalist physician in Billings, Montana. Individual provider, active in the CMS NPPES registry since July 8, 2006.
## Identity
- **NPI:** 1285667816 (Entity type: Individual)
- **Enumerated:** July 8, 2006
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 47210 (Colorado)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 3528 GABEL RD, Billings, MT 59102-7307
- **Phone:** (970) 391-0572 · **Fax:** (815) 377-2580
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): Banner Hospital Based Physicians Colorado LLC (NPI 1386034122, Fort Collins, CO); Rural Physicians Group - Pannu PLLC (NPI 1417538539, Sterling, CO) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** December 6, 2010
- **Other identifiers:** Other 12435 (MT); Other 47210 (CO); Medicaid 60427876 (CO); and 2 more
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Source: [NPI Profile](https://npiprofile.com/npi/1285667816) · Data from the CMS NPPES public registry.