Mark Weismiller, MD
NPI 1205128816 · Surgery Physician · Saint Johns, MI
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Weismiller, MD is a Surgery Physician provider in Saint Johns, MI (NPI 1205128816).
Provider details
- NPI number
- 1205128816
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 4301098816 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 50 | 48 |
| Sod Sulf/Pot Chloride/Mag Sulfbrand: Sutab | 50 | 50 |
| Ondansetron Hcl | 19 | 19 |
| Pantoprazole Sodium | 18 | 16 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-05-15
- Last updated
- 2022-11-08
- Certified
- 2022-11-08
Frequently asked questions
- What is Mark Weismiller's NPI number?
- Mark Weismiller's National Provider Identifier (NPI) is 1205128816, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Weismiller's specialty?
- Mark Weismiller is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Weismiller located?
- Mark Weismiller's practice location on file with NPPES is 901 S Oakland St, Saint Johns, MI 48879-2200.
- What is Mark Weismiller's phone number?
- The practice phone number listed in the NPPES registry for Mark Weismiller is (989) 224-2338.
- Does Mark Weismiller accept Medicare?
- Mark Weismiller is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Weismiller's NPI active?
- Yes — Mark Weismiller's NPI (1205128816) is active in the NPPES registry as of the last update on 2022-11-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.