Quick answers
- Does Justin P. McNamar accept Medicare assignment?
- Yes. Medicare's clinician data says Justin P. McNamar 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 Justin P. McNamar see?
- In 2024, CMS data shows 381 Original Medicare patients and 3,884 services for Justin P. McNamar. This counts Original Medicare only and measures volume, not quality.
- What is Justin P. McNamar's NPI number?
- 1912958836. 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 Justin P. McNamar, 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 | 381 |
|---|---|
| Services billed to Medicare | 3,884 |
| Different services or procedures | 107 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)166 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)107 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)50 services
- Diagnostic exam of voice box using a flexible endoscope (31575)46 services
- Diagnostic exam of nasal passages using an endoscope (31231)43 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 cholesterol70%
- High blood pressure62%
- Arthritis35%
- Diabetes25%
- Anxiety23%
- Atrial fibrillation19%
Hospitals where Justin P. McNamar works
Medicare's Facility Affiliation Data lists Justin P. McNamar 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.
- Columbus Community HospitalColumbus, WI · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 521338
- Reedsburg Area Medical CenterReedsburg, WI · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 521351
- SSM Health St Mary's Hospital - MadisonMadison, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520083
Practice locations
Addresses where Justin P. McNamar is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.
- 1211 Fish Hatchery RdMadison, WI 53715 (608) 252‑8000
- 1515 Park AveColumbus, WI 53925 (920) 623‑2200
- 1821 S Stoughton RdMadison, WI 53716 (608) 260‑6000
- 2000 N Dewey AveReedsburg, WI 53959 (608) 524‑6487
- 515 22nd AveMonroe, WI 53566 (608) 324‑2000
Group practices
Medicare enrollment lists Justin P. McNamar as a member of this group (CMS data updated October 2, 2026).
- Dean Health Systems Inc1,159 clinicians in the group
Specialties
- Otolaryngologyprimary
Other ENT doctors in Madison
Clinicians with the same Medicare primary specialty in Madison, WI — not a recommendation.
Other clinicians in Dean Health Systems Inc
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 | 2002 (24 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1912958836 |
| 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