Doctor profile · Federal record
Dr. LARISSA ALLEN, M.D.
Gastroenterology Physician (CMS: GASTROENTEROLOGY) · Internal Medicine Physician · TUCSON, AZ
- NPI 1659536480
- Accepts Medicare
- MIPS 10.9 / 100 · 2023
- 18 yrs in practice
- Female
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
6130 N LA CHOLLA BLVD, SUITE 200
TUCSON, AZ 857413557
(520) 219-8342
fax (520) 219-7117
Credentials & registration
- NPI registered
- July 2008 — 18 yrs on file
- Profile last updated
- January 5, 2017
- Year of graduation
- 2008 — 18 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State licenses (2)
- Arizona #48787 · Arizona #R70554
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1659536480. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,188
Distinct HCPCS
10
Medicare allowed
$161,306
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 180 | 179 | $239 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 165 | 135 | $124 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 161 | 139 | $87 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 160 | 159 | $117 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 137 | 136 | $104 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 99 | 99 | $108 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 86 | 86 | $159 | |
91065 |
Measurement of hydrogen in breath to test for stomach and bowel symptoms | 65 | 46 | $81 | |
G0105 |
Colorectal cancer screening; colonoscopy on individual at high risk | 40 | 40 | $169 | |
43249 |
Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm | 34 | 33 | $140 |
In context: peer comparison
Among 17 peers in this city , average services per provider: 72. This provider delivers 17× the peer median.Open Payments
Industry payments received
All-time total
$1,093
Transactions
51
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| ABBVIE INC. | 16 | $326.30 | |
| Celgene Corporation | 13 | $168.77 | |
| PFIZER INC. | 4 | $86.46 | |
| Regeneron Healthcare Solutions, Inc. | 2 | $65.66 | |
| Intercept Pharmaceuticals, Inc. | 3 | $53.59 | |
| GENZYME CORPORATION | 2 | $51.40 | |
| Takeda Pharmaceuticals U.S.A., Inc. | 1 | $46.22 | |
| Celltrion USA Inc. | 1 | $45.40 | |
| Janssen Biotech, Inc. | 2 | $43.15 | |
| Ardelyx, Inc. | 2 | $39.86 | |
| Phathom Pharmaceuticals, Inc. | 1 | $34.18 | |
| Madrigal Pharmaceuticals | 1 | $32.82 | |
| QOL Medical, LLC | 1 | $31.22 | |
| Biocon Biologics Inc | 1 | $23.04 | |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | 1 | $15.63 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,521
Patients
846
Total drug cost
$1,075,604
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 331 | 114 | $4,939 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,mag Sulfates) | Brand | 315 | 312 | $24,404 |
| Pantoprazole Sodium | Generic | 275 | 97 | $3,851 |
| Gavilyte-G (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 138 | 137 | $2,177 |
| Famotidine | Generic | 80 | 34 | $1,064 |
| Sucralfate | Generic | 80 | 48 | $2,047 |
| Dicyclomine Hcl | Generic | 74 | 29 | $1,581 |
| Clenpiq (Sod Picosulf/Mag Ox/Citric Ac) | Brand | 36 | 36 | $6,394 |
| Lactulose | Generic | 31 | 0 | $1,033 |
| Stelara (Ustekinumab) | Brand | 29 | 0 | $788,062 |