Quick answers
- Does Richard G. Fessler accept Medicare assignment?
- Yes. Medicare's clinician data says Richard G. Fessler 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 Richard G. Fessler see?
- In 2024, CMS data shows 164 Original Medicare patients and 294 services for Richard G. Fessler. This counts Original Medicare only and measures volume, not quality.
- What is Richard G. Fessler's NPI number?
- 1447473426. 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 Richard G. Fessler, 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 | 164 |
|---|---|
| Services billed to Medicare | 294 |
| Different services or procedures | 34 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)82 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)65 services
- Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment (63047)17 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)17 services
- Insertion of cage or mesh device to spine bone and disc space during spine fusion (22853)15 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%
- Arthritis75%
- High blood pressure70%
- Ischemic heart disease33%
- Diabetes21%
- Anxiety21%
Hospitals where Richard G. Fessler works
Medicare's Facility Affiliation Data lists Richard G. Fessler 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.
- Northshore University Healthsystem - Evanston HospitalEvanston, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140010
- Northwest Community Hospital 1Arlington Heights, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140252
- Northwestern Lake Forest HospitalLake Forest, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140130
- Rush University Medical CenterChicago, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140119
Practice locations
Addresses where Richard G. Fessler is enrolled with Medicare (CMS data updated October 2, 2026).
- 1520 W Harrison StChicago, IL 60607 (312) 942‑5904
- 1653 W Congress PkwyChicago, IL 60612
- 1700 W Van Buren StChicago, IL 60612 (312) 563‑2875
Group practices
Medicare enrollment lists Richard G. Fessler as a member of this group (CMS data updated October 2, 2026).
- Rush University Medical Group1,551 clinicians in the group
Specialties
- Neurosurgeryprimary
Other neurosurgeons in Chicago
Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.
Other clinicians in Rush University Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Chicago, Pritzker School Of Medicine |
| Graduation year | 1983 (43 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) | 1447473426 |
| 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