Quick answers
- Does Martin M. Okun accept Medicare assignment?
- Yes. Medicare's clinician data says Martin M. Okun 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 Martin M. Okun see?
- In 2024, CMS data shows 432 Original Medicare patients and 783 services for Martin M. Okun. This counts Original Medicare only and measures volume, not quality.
- What is Martin M. Okun's NPI number?
- 1598144867. 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 Martin M. Okun, 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 | 432 |
|---|---|
| Services billed to Medicare | 783 |
| Different services or procedures | 39 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)134 services
- Destruction of precancer skin growth, 2-14 growths (17003)130 services
- Destruction of skin growth, 1-14 growths (17110)107 services
- Destruction of precancer skin growth, 1 growth (17000)76 services
- Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)69 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 cholesterol65%
- High blood pressure63%
- Arthritis38%
- Anxiety23%
- Diabetes20%
- Ischemic heart disease17%
Hospitals where Martin M. Okun works
Medicare's Facility Affiliation Data lists Martin M. Okun 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.
- Fort Memorial HospitalFort Atkinson, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520071
- Stoughton HospitalStoughton, WI · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 521343
- University of WI Hospitals & Clinics AuthorityMadison, WI · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 520098
- Watertown Memorial HospitalWatertown, WI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 520116
Practice locations
Addresses where Martin M. Okun is enrolled with Medicare (CMS data updated October 2, 2026).
- 611 E Sherman AveFort Atkinson, WI 53538 (920) 568‑5000
Group practices
Medicare enrollment lists Martin M. Okun as a member of this group (CMS data updated October 2, 2026).
- Fort Healthcare Inc155 clinicians in the group
Specialties
- Dermatologyprimary
Other dermatologists in Wisconsin
Clinicians with the same Medicare primary specialty in Wisconsin — not a recommendation.
Other clinicians in Fort Healthcare Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Albert Einstein College Of Medicine Of Yeshiva University |
| Graduation year | 1990 (36 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1598144867 |
| 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