Quick answers
- Does Lenny M. Cohen accept Medicare assignment?
- Yes. Medicare's clinician data says Lenny M. Cohen 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 Lenny M. Cohen see?
- In 2024, CMS data shows 235 Original Medicare patients and 2,098 services for Lenny M. Cohen. This counts Original Medicare only and measures volume, not quality.
- What is Lenny M. Cohen's NPI number?
- 1730397878. 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 Lenny M. Cohen, 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 | 235 |
|---|---|
| Services billed to Medicare | 2,098 |
| Different services or procedures | 28 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Needle measurement of electrical activity in arm or leg muscles, complete study (95886)218 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)93 services
- New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)83 services
- Nerve conduction, 7-8 studies (95910)72 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)59 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%
- High blood pressure69%
- Arthritis60%
- Anxiety35%
- Depression32%
- Diabetes29%
Hospitals where Lenny M. Cohen works
Medicare's Facility Affiliation Data lists Lenny M. Cohen 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.
- Loyola Gottlieb Memorial HospitalMelrose Park, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140008
- Northshore University Healthsystem - Evanston HospitalEvanston, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140010
- Northwestern Memorial HospitalChicago, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140281
- Rush Oak Park HospitalOak Park, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140063
- Waukesha Memorial HospitalWaukesha, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520008
Practice locations
Addresses where Lenny M. Cohen is enrolled with Medicare (CMS data updated October 2, 2026).
- 610 S Maple Ave, Suite 2600Oak Park, IL 60304 (708) 660‑6900
- 721 American AveWaukesha, WI 53188
- N14W24100 Riverwood DrWaukesha, WI 53188
- N17W24100 Riverwood DrWaukesha, WI 53188
Group practices
Medicare enrollment lists Lenny M. Cohen as a member of this group (CMS data updated October 2, 2026).
- Prohealth Medical Group Inc479 clinicians in the group
Specialties
- Neurologyprimary
Other neurologists in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Other clinicians in Prohealth Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| 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) | 1730397878 |
| 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