Doctor profile · Federal record
Dr. Gordon Liss, MD
Gastroenterology Physician (CMS: Gastroenterology) · Gastroenterology Physician · Frederick, MD
- NPI 1669620746
- Accepts Medicare
- 22 yrs in practice
- Licensed in 2 states
- Male
- Solo practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
310 W Ninth St
Frederick, MD 217014546
(301) 695-6800
fax (301) 695-6891 - Additional location
-
2205 Vista Way Ste 340
Oceanside, CA 920545661
(760) 704-5870
fax (858) 404-1821 - Mailing address
-
10825 Admirals Way
Potomac, MD 208541232
Credentials & registration
- NPI registered
- September 2008 — 18 yrs on file
- Profile last updated
- April 6, 2021
- Year of graduation
- 2004 — 22 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State licenses (2)
- Maryland #MD0070283 · California #C168998
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1669620746. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
872
Distinct HCPCS
10
Medicare allowed
$102,699
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 223 | 124 | $137 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 153 | 149 | $130 | |
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 | 141 | 134 | $5 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 78 | 78 | $175 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 69 | 66 | $93 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 63 | 62 | $259 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 49 | 35 | $123 | |
93005 |
Routine electrocardiogram (ecg) using at least 12 leads with tracing | 36 | 35 | $7 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 33 | 33 | $179 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 16 | 16 | $97 |
In context: peer comparison
Among 13 peers in this city , average services per provider: 78. This provider delivers 11× the peer median.Open Payments
Industry payments received
All-time total
$1,101
Transactions
41
Manufacturers
14
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Janssen Biotech, Inc. | 7 | $248.44 | |
| Ferring Pharmaceuticals Inc. | 2 | $137.05 | |
| PFIZER INC. | 5 | $122.56 | |
| Takeda Pharmaceuticals U.S.A., Inc. | 5 | $112.19 | |
| ABBVIE INC. | 5 | $111.95 | |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | 4 | $68.24 | |
| Braintree Laboratories, Inc. | 3 | $67.14 | |
| GENZYME CORPORATION | 2 | $57.20 | |
| Lilly USA, LLC | 2 | $50.44 | |
| Phathom Pharmaceuticals, Inc. | 2 | $30.17 | |
| Otsuka America Pharmaceutical, Inc. | 1 | $29.73 | |
| Daiichi Sankyo Inc. | 1 | $25.80 | |
| Mallinckrodt Hospital Products Inc. | 1 | $20.89 | |
| Intercept Pharmaceuticals, Inc. | 1 | $18.92 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
585
Patients
329
Total drug cost
$27,332
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,mag Sulfates) | Brand | 173 | 168 | $12,668 |
| Omeprazole | Generic | 125 | 41 | $1,317 |
| Pantoprazole Sodium | Generic | 79 | 21 | $1,174 |
| Famotidine | Generic | 77 | 30 | $810 |
| Gavilyte-G (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 71 | 69 | $1,282 |
| Colestipol Hcl | Generic | 21 | 0 | $999 |
| Cholestyramine (Cholestyramine (With Sugar)) | Brand | 15 | 0 | $758 |
| Dicyclomine Hcl | Generic | 13 | 0 | $122 |
| Linzess (Linaclotide) | Brand | 11 | 0 | $8,202 |
Hospital affiliations
Frequently asked questions
What is Dr. Gordon Liss's medical specialty?
Dr. Gordon Liss practices Gastroenterology Physician in Frederick, MD.
Where does Dr. Gordon Liss practice?
Dr. Gordon Liss practices at 310 W Ninth St, Frederick, MD 217014546. Office phone: 3016956800.
What is Dr. Gordon Liss's NPI?
Dr. Gordon Liss's National Provider Identifier (NPI) is 1669620746, issued by NPPES.
Does Dr. Gordon Liss accept Medicare assignment?
Yes. Dr. Gordon Liss accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Gordon Liss commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Biopsy of large bowel using a flexible endoscope (HCPCS 45380); 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.