Quick answers
- Which hospitals does Stuart S. Kassan work at?
- Medicare's official clinician data lists Stuart S. Kassan at 3 hospitals: National Jewish Health, Uch-Memorial Health System and University of Colorado Hospital Authority. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Stuart S. Kassan see patients?
- Medicare's clinician data lists 1 practice location in Denver, CO. Call before your visit to confirm the address.
- What is Stuart S. Kassan's specialty?
- Medicare lists Rheumatology as the primary specialty.
- Does Stuart S. Kassan accept Medicare assignment?
- Yes. Medicare's clinician data says Stuart S. Kassan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Stuart S. Kassan offer telehealth?
- Medicare's clinician data says Stuart S. Kassan offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Stuart S. Kassan?
- (303) 398-1355, as listed in official Medicare / NPI Registry data.
- What is Stuart S. Kassan's NPI number?
- 1093706475. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Stuart S. Kassan works
Medicare's Facility Affiliation Data lists Stuart S. Kassan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- National Jewish HealthDenver, CO · Acute Care Hospital · CCN 060107
- Uch-Memorial Health SystemColorado Springs, CO · Acute Care Hospital · CCN 060022
- University of Colorado Hospital AuthorityAurora, CO · Acute Care Hospital · CCN 060024
Practice locations
Addresses where Stuart S. Kassan is enrolled with Medicare (CMS data updated 2026-10-02).
- 1400 Jackson StDenver, CO 80206 (303) 398‑1355
Group practices
Medicare enrollment lists Stuart S. Kassan as a member of this group (CMS data updated 2026-10-02).
- National Jewish Health247 clinicians in the group
Specialties
- Rheumatologyprimary
Other rheumatologists in Denver
Clinicians with the same Medicare primary specialty in Denver, CO — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | George Washington University School Of Medicine |
| Graduation year | 1972 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1093706475 |
| 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 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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