Quick answers
- Does Ronald J. Kolegraff accept Medicare assignment?
- Yes. Medicare's clinician data says Ronald J. Kolegraff 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 Ronald J. Kolegraff see?
- In 2024, CMS data shows 94 Original Medicare patients and 305 services for Ronald J. Kolegraff. This counts Original Medicare only and measures volume, not quality.
- What is Ronald J. Kolegraff's NPI number?
- 1891757878. 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 Ronald J. Kolegraff, 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 | 94 |
|---|---|
| Services billed to Medicare | 305 |
| Different services or procedures | 17 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Ultrasonic guidance for needle placement (76942)64 services
- Injection of chemical agent into multiple incompetent veins of leg (36471)62 services
- Ultrasound study of one arm or leg veins with compression and maneuvers (93971)58 services
- Laser destruction of incompetent vein of arm or leg using imaging guidance (36478)30 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)27 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 blood pressure67%
- High cholesterol53%
- Arthritis36%
- Diabetes19%
- Chronic kidney disease18%
- Depression17%
Hospitals where Ronald J. Kolegraff works
Medicare's Facility Affiliation Data lists Ronald J. Kolegraff 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.
- Lakes Regional HealthcareSpirit Lake, IA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 160124
Practice locations
Addresses where Ronald J. Kolegraff is enrolled with Medicare (CMS data updated October 2, 2026).
- 3301 Hwy 71, Suite 1Spirit Lake, IA 51360 (712) 332‑6001
Group practices
Medicare enrollment lists Ronald J. Kolegraff as a member of this group (CMS data updated October 2, 2026).
- My Skin Clinics PLC3 clinicians in the group
Specialties
Other general practitioners in Iowa
Clinicians with the same Medicare primary specialty in Iowa — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Un Of California, Irvine, College Of Medicine |
| Graduation year | 1982 (44 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1891757878 |
| 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