Doctor profile · Federal record
Dr. Adam Riordan
Gastroenterology Physician (CMS: Gastroenterology) · Ithaca, NY
- NPI 1508126988
- Accepts Medicare
- MIPS 92.3 / 100 · 2023
- 11 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
2435 N Triphammer RD
Ithaca, NY 14850
(607) 272-5011
Credentials & registration
- NPI registered
- May 2012 — 14 yrs on file
- Profile last updated
- July 11, 2018
- Year of graduation
- 2015 — 11 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- New York #293512
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1508126988. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
633
Distinct HCPCS
10
Medicare allowed
$61,312
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
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 | 171 | 159 | $5 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 111 | 110 | $96 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 93 | 88 | $95 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 92 | 91 | $229 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 55 | 48 | $87 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 35 | 34 | $126 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 21 | 19 | $123 | |
45378 |
Diagnostic exam of large bowel using a flexible endoscope | 15 | 15 | $175 | |
43249 |
Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm | 14 | 12 | $122 | |
43255 |
Control of bleeding of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 14 | 12 | $177 |
In context: peer comparison
Among 4 peers in this city , average services per provider: 45. This provider delivers 14× the peer median.Open Payments
Industry payments received
All-time total
$1,523
Transactions
73
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| QOL Medical, LLC | 8 | $257.08 | |
| ABBVIE INC. | 15 | $255.15 | |
| Janssen Biotech, Inc. | 12 | $231.59 | |
| Takeda Pharmaceuticals U.S.A., Inc. | 9 | $182.74 | |
| Ardelyx, Inc. | 4 | $106.64 | |
| Regeneron Healthcare Solutions, Inc. | 3 | $91.66 | |
| PFIZER INC. | 5 | $89.48 | |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | 5 | $84.34 | |
| Lilly USA, LLC | 4 | $69.39 | |
| Phathom Pharmaceuticals, Inc. | 3 | $50.94 | |
| Madrigal Pharmaceuticals | 1 | $29.19 | |
| Gilead Sciences, Inc. | 1 | $21.10 | |
| Intercept Pharmaceuticals, Inc. | 1 | $19.96 | |
| Sandoz Inc. | 1 | $19.39 | |
| Celltrion USA Inc. | 1 | $14.58 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
668
Patients
308
Total drug cost
$84,302
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 274 | 96 | $7,459 |
| Omeprazole | Generic | 120 | 40 | $2,207 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,mag Sulfates) | Brand | 97 | 96 | $7,845 |
| Gavilyte-C (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 46 | 46 | $839 |
| Gavilyte-G (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 30 | 30 | $308 |
| Esomeprazole Magnesium | Generic | 27 | 0 | $2,164 |
| Creon (Lipase/Protease/Amylase) | Brand | 26 | 0 | $62,883 |
| Lansoprazole | Generic | 18 | 0 | $271 |
| Famotidine | Generic | 17 | 0 | $217 |
| Ondansetron Odt (Ondansetron) | Brand | 13 | 0 | $109 |
Hospital affiliations
Frequently asked questions
What is Dr. Adam Riordan's medical specialty?
Dr. Adam Riordan practices Gastroenterology Physician in Ithaca, NY.
Where does Dr. Adam Riordan practice?
Dr. Adam Riordan practices at 2435 N Triphammer RD, Ithaca, NY 14850. Office phone: 6072725011.
What is Dr. Adam Riordan's NPI?
Dr. Adam Riordan's National Provider Identifier (NPI) is 1508126988, issued by NPPES.
Does Dr. Adam Riordan accept Medicare assignment?
Yes. Dr. Adam Riordan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Adam Riordan commonly perform?
Top Medicare-reported procedures in 2023: 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); Biopsy of large bowel using a flexible endoscope (HCPCS 45380); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239). Source: CMS Medicare Physician & Other Practitioners file.