Quick answers
- Does Daniel W. Guehlstorf accept Medicare assignment?
- Yes. Medicare's clinician data says Daniel W. Guehlstorf accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Daniel W. Guehlstorf see?
- In 2024, CMS data shows 242 Original Medicare patients and 1,563 services for Daniel W. Guehlstorf. This counts Original Medicare only and measures volume, not quality.
- What is Daniel W. Guehlstorf's NPI number?
- 1457456535. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Daniel W. Guehlstorf, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 242 |
|---|---|
| Services billed to Medicare | 1,563 |
| Different services or procedures | 59 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Injection, methylprednisolone acetate, 1 mg (J1010)371 services
- Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)364 services
- X-ray of foot, minimum of 3 views (73630)199 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)185 services
- X-ray of ankle, minimum of 3 views (73610)92 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- Arthritis75%
- High blood pressure65%
- Ischemic heart disease24%
- Anxiety22%
- Chronic kidney disease21%
Hospitals where Daniel W. Guehlstorf works
Medicare's Facility Affiliation Data lists Daniel W. Guehlstorf at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Ascension SE Wisconsin HospitalMilwaukee, WI · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 520136
- Midwest Orthopedic Specialty HospitalFranklin, WI · Acute Care Hospital · Emergency services: not listed by Medicare · CCN 520205
Practice locations
Addresses where Daniel W. Guehlstorf is enrolled with Medicare (CMS data updated October 2, 2026).
- 3111 W Rawson Ave, Suite 200Franklin, WI 53132 (414) 384‑6700
- 7095 S Ballpark Dr, Suite 100Franklin, WI 53132 (414) 817‑6620
Group practices
Medicare enrollment lists Daniel W. Guehlstorf as a member of these groups (CMS data updated October 2, 2026).
- Midwest Orthopedic Specialty Hospital, LLC63 clinicians in the group
- Orthopedic Surgeons of Wisconsin SC61 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
- General Surgeryalso
Other orthopedic surgeons in Franklin
Clinicians with the same Medicare primary specialty in Franklin, WI — not a recommendation.
Other clinicians in Midwest Orthopedic Specialty Hospital, LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical College Of Wisconsin |
| Graduation year | 1993 (33 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1457456535 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians