Doctor profile · Federal record
Dr. Joseph Cassara, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Lafayette, CO
- NPI 1275755290
- Accepts Medicare
- 25 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1000 W South Boulder RD
Lafayette, CO 800262752
(303) 604-5000 - Mailing address
-
15539 W 75Th Pl
Arvada, CO 800077957
Credentials & registration
- NPI registered
- May 2007 — 19 yrs on file
- Profile last updated
- March 9, 2026
- Year of graduation
- 2001 — 25 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Colorado #46321
- Medicaid
- CO #40587843
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1275755290. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
675
Distinct HCPCS
10
Medicare allowed
$77,971
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 131 | 127 | $244 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 127 | 118 | $56 | |
G0500 |
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito | 90 | 88 | $5 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 64 | 63 | $119 | |
99153 |
Use of a drug to induce depression of consciousness by physician performing a procedure, each additional 15 minutes | 38 | 30 | $11 | |
43259 |
Ultrasound exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 35 | 35 | $187 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 30 | 30 | $158 | |
43248 |
Insertion of guide wire with dilation of esophagus using a flexible endoscope | 21 | 21 | $115 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 20 | 18 | $90 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 20 | 19 | $172 |
In context: peer comparison
Among 4 peers in this city , average services per provider: 48. This provider delivers 14× the peer median.Open Payments
Industry payments received
All-time total
$1,552
Transactions
74
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Takeda Pharmaceuticals U.S.A., Inc. | 15 | $277.55 | |
| ABBVIE INC. | 14 | $226.12 | |
| Gilead Sciences, Inc. | 8 | $177.98 | |
| Janssen Biotech, Inc. | 6 | $124.47 | |
| GENZYME CORPORATION | 5 | $106.34 | |
| Phathom Pharmaceuticals, Inc. | 3 | $82.77 | |
| AIMMUNE THERAPEUTICS, INC. | 4 | $82.26 | |
| Regeneron Healthcare Solutions, Inc. | 3 | $73.69 | |
| Intercept Pharmaceuticals, Inc. | 4 | $67.79 | |
| Celgene Corporation | 3 | $59.18 | |
| Organon Llc | 2 | $50.92 | |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | 2 | $48.66 | |
| Braintree Laboratories, Inc. | 2 | $39.33 | |
| QOL Medical, LLC | 2 | $38.25 | |
| Ardelyx, Inc. | 1 | $33.65 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
307
Patients
194
Total drug cost
$4,801
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 152 | 65 | $2,177 |
| Gavilyte-C (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 124 | 117 | $2,289 |
| Omeprazole | Generic | 19 | 12 | $280 |
| Famotidine | Generic | 12 | 0 | $55 |
Hospital affiliations
Frequently asked questions
What is Dr. Joseph Cassara's medical specialty?
Dr. Joseph Cassara practices Gastroenterology Physician in Lafayette, CO.
Where does Dr. Joseph Cassara practice?
Dr. Joseph Cassara practices at 1000 W South Boulder RD, Lafayette, CO 800262752. Office phone: 3036045000.
What is Dr. Joseph Cassara's NPI?
Dr. Joseph Cassara's National Provider Identifier (NPI) is 1275755290, issued by NPPES.
Does Dr. Joseph Cassara accept Medicare assignment?
Yes. Dr. Joseph Cassara accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Joseph Cassara commonly perform?
Top Medicare-reported procedures in 2023: Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239); Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito (HCPCS G0500). Source: CMS Medicare Physician & Other Practitioners file.