MARK WEISMILLER MD
NPI 1205128816
Surgery in Saint Johns, MI
About Mark Weismiller Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK WEISMILLER MD (NPI 1205128816) is an individual surgery provider in Saint Johns, Michigan, licensed in Michigan (4301098816) and active in the NPI registry since May 2011. He is enrolled in Medicare PECOS, is affiliated with Sparrow Clinton Hospital, and is a graduate of Wayne State University School Of Medicine (2011).
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
Mark Weismiller 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
9Medicare enrollment records show Mark Weismiller reassigns Medicare billing to 9 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Saint Johns, MI 48879
- Reassigned Medicare billing, Michigan enrollment
- Also billed through NPI 1326138173 (Michigan)
- 114 clinicians in this Medicare group
Fowler, MI 48835
- Reassigned Medicare billing, Michigan enrollment
- 215 clinicians in this Medicare group
Portland, MI 48875
- Reassigned Medicare billing, Michigan enrollment
- Also billed through NPI 1700820065 (Michigan)
- 317 clinicians in this Medicare group
Greenville, MI 48838
- Reassigned Medicare billing, Michigan enrollment
- 242 clinicians in this Medicare group
Big Rapids, MI 49307
- Reassigned Medicare billing, Michigan enrollment
- 151 clinicians in this Medicare group
Grant, MI 49327
- Reassigned Medicare billing, Michigan enrollment
- 180 clinicians in this Medicare group
West Branch, MI 48661
- Reassigned Medicare billing, Michigan enrollment
- 179 clinicians in this Medicare group
Ludington, MI 49431
- Reassigned Medicare billing, Michigan enrollment
- 168 clinicians in this Medicare group
Kincheloe, MI 49788
- Reassigned Medicare billing, Michigan enrollment
- 185 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Sparrow Clinton Hospital
Critical Access Hospitals · Saint Johns, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 48879 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.
Reported Quality Measures
Other Providers at the Same Location NPPES 14
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Weismiller's NPI number?
The NPI number for Mark Weismiller is 1205128816. It was assigned to this individual provider in the NPPES registry on May 15, 2011.
Where is Mark Weismiller located?
Mark Weismiller practices at 901 S Oakland St Suite 201, Saint Johns, MI 48879. The listed phone number is (989) 224-2338.
What is Mark Weismiller's specialty?
The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.
Is Mark Weismiller enrolled in Medicare?
Yes. Mark Weismiller 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 Mark Weismiller's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Weismiller reassigns Medicare benefits to 9 organizations: Sparrow Clinton Hospital (Saint Johns, MI), Sparrow Carson Hospital (Fowler, MI), Sparrow Ionia Hospital (Portland, MI), Spectrum Health United (Greenville, MI), Mecosta County Medical Center (Big Rapids, MI) and 4 more organizations, 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 Mark Weismiller's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Weismiller accept?
Health plans from Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company, McLaren Health Plan Community and Priority Health list Mark Weismiller 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 Weismiller affiliated with any hospitals?
According to CMS data, Mark Weismiller is affiliated with Sparrow Clinton Hospital.
When was this NPI record last updated?
The NPPES record for Mark Weismiller was last updated on November 8, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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 Weismiller, MD · NPI 1205128816
Surgery physician in Saint Johns, Michigan. Individual provider, active in the CMS NPPES registry since May 15, 2011.
## Identity
- **NPI:** 1205128816 (Entity type: Individual)
- **Enumerated:** May 15, 2011
- **Primary specialty:** Surgery · taxonomy 208600000X
- **State license:** 4301098816 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 901 S OAKLAND ST, SUITE 201, Saint Johns, MI 48879-2200
- **Phone:** (989) 224-2338 · **Fax:** (989) 224-2065
## 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:** 9 organizations under Medicare reassignment (form CMS-855R): Sparrow Clinton Hospital (NPI 1093809824, Saint Johns, MI); Sparrow Carson Hospital (NPI 1619124328, Fowler, MI); Sparrow Ionia Hospital (NPI 1295801108, Portland, MI); Spectrum Health United (NPI 1063781342, Greenville, MI); Mecosta County Medical Center (NPI 1275866006, Big Rapids, MI); and 4 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Wayne State University School Of Medicine, class of 2011
## Record status
- **NPPES last updated:** November 8, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1205128816) · Data from the CMS NPPES public registry.