Quick answers
- Does Jonathan S. Mendelsohn accept Medicare assignment?
- Yes. Medicare's clinician data says Jonathan S. Mendelsohn 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 Jonathan S. Mendelsohn see?
- In 2024, CMS data shows 547 Original Medicare patients and 7,952 services for Jonathan S. Mendelsohn. This counts Original Medicare only and measures volume, not quality.
- What is Jonathan S. Mendelsohn's NPI number?
- 1285955526. 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 Jonathan S. Mendelsohn, 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 | 547 |
|---|---|
| Services billed to Medicare | 7,952 |
| Different services or procedures | 46 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)909 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)610 services
- Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)380 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)373 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)216 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 cholesterol71%
- High blood pressure63%
- Arthritis38%
- Diabetes18%
- Ischemic heart disease18%
- Atrial fibrillation17%
Hospitals where Jonathan S. Mendelsohn works
Medicare's Facility Affiliation Data lists Jonathan S. Mendelsohn 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.
- Olympic Medical CenterPort Angeles, WA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 500072
- St Michael Medical CenterSilverdale, WA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 500039
Practice locations
Addresses where Jonathan S. Mendelsohn is enrolled with Medicare (CMS data updated October 2, 2026).
- 19245 7th Ave NEPoulsbo, WA 98370 (360) 782‑3500
- 2600 Compass RdGlenview, IL 60026
Group practices
Medicare enrollment lists Jonathan S. Mendelsohn as a member of these groups (CMS data updated October 2, 2026).
- Select Rehabilitation, LLC2,046 clinicians in the group
- Franciscan Medical Group1,421 clinicians in the group
- Select Outpatient Services Inc805 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Poulsbo
Clinicians with the same Medicare primary specialty in Poulsbo, WA — not a recommendation.
Other clinicians in Select Rehabilitation, LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2009 (17 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1285955526 |
| 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