Doctor profile · Federal record
Dr. Stuart Kassan, MD
Rheumatology Physician (CMS: Rheumatology) · Denver, CO
- NPI 1093706475
- Accepts Medicare
- 54 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
1400 Jackson St
Denver, CO 802062762
(303) 388-4461
fax (303) 398-1211 - Additional location
-
198 Union Blvd, Suite 150
Lakewood, CO 802282259
(303) 892-6033
fax (303) 573-6929
Credentials & registration
- NPI registered
- November 2005 — 21 yrs on file
- Profile last updated
- January 4, 2023
- Year of graduation
- 1972 — 54 yrs since
- Specialty taxonomy
- 207RR0500X — NUCC code
- State license (1)
- Colorado #21547
- Medicaid
- CO #01215474
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1093706475. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
451
Distinct HCPCS
2
Medicare allowed
$59,492
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 330 | 187 | $144 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 121 | 94 | $99 |
In context: peer comparison
Among 19 peers in this city , average services per provider: 2,043. This provider delivers 0.2× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
970
Patients
305
Total drug cost
$49,464
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Hydroxychloroquine Sulfate | Generic | 263 | 93 | $20,375 |
| Prednisone | Generic | 201 | 64 | $2,996 |
| Methotrexate (Methotrexate Sodium) | Brand | 97 | 29 | $2,831 |
| Vitamin D2 (Ergocalciferol (Vitamin D2)) | Brand | 54 | 22 | $423 |
| Folic Acid | Generic | 48 | 18 | $208 |
| Levothyroxine Sodium | Generic | 46 | 16 | $1,391 |
| Gabapentin | Generic | 42 | 14 | $1,655 |
| Cyclobenzaprine Hcl | Generic | 35 | 13 | $449 |
| Cevimeline Hcl | Generic | 34 | 12 | $12,899 |
| Pilocarpine Hcl | Generic | 29 | 12 | $3,273 |
Hospital affiliations
Frequently asked questions
What is Dr. Stuart Kassan's medical specialty?
Dr. Stuart Kassan practices Rheumatology Physician in Denver, CO.
Where does Dr. Stuart Kassan practice?
Dr. Stuart Kassan practices at 1400 Jackson St, Denver, CO 802062762. Office phone: 3033884461.
What is Dr. Stuart Kassan's NPI?
Dr. Stuart Kassan's National Provider Identifier (NPI) is 1093706475, issued by NPPES.
Does Dr. Stuart Kassan accept Medicare assignment?
Yes. Dr. Stuart Kassan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Stuart Kassan commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99215); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.