Doctor profile · Federal record
Dr. Andreas Stefan, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Portland, ME
- NPI 1831299460
- Accepts Medicare
- MIPS 93.1 / 100 · 2023
- 35 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
161 Marginal Way
Portland, ME 041012438
(207) 773-7964
fax (207) 773-9073
Credentials & registration
- NPI registered
- September 2006 — 20 yrs on file
- Profile last updated
- September 8, 2022
- Year of graduation
- 1991 — 35 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Maine #016112
- Medicaid
- ME #330780099
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1831299460. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
913
Distinct HCPCS
10
Medicare allowed
$107,171
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
88305 |
Pathology examination of tissue using a microscope, intermediate complexity | 327 | 126 | $72 | |
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 | 106 | 104 | $5 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 88 | 85 | $241 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 63 | 62 | $83 | |
43264 |
Removal of stone or debris from bile or pancreatic duct using a flexible endoscope | 62 | 51 | $126 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 58 | 53 | $126 | |
43274 |
Insertion of stent into pancreatic or bile duct using a flexible endoscope | 57 | 44 | $394 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 57 | 56 | $85 | |
43262 |
Incision of pancreatic outlet using a flexible endoscope | 29 | 28 | $88 | |
43275 |
Removal of stent from pancreatic or bile duct using a flexible endoscope | 19 | 19 | $348 |
In context: peer comparison
Among 14 peers in Portland Gastroenterology Physician, average services per provider: 56. This provider delivers 16× the peer median.Open Payments
Industry payments received
All-time total
$637
Transactions
12
Manufacturers
7
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Boston Scientific Corporation | 5 | $242.37 | |
| Steris Corporation | 1 | $154.71 | |
| Lilly USA, LLC | 1 | $86.00 | |
| Genzyme Corporation | 2 | $56.35 | |
| Janssen Biotech, INC. | 1 | $38.10 | |
| Ardelyx, INC. | 1 | $32.49 | |
| Aimmune Therapeutics, INC. | 1 | $27.20 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
496
Patients
154
Total drug cost
$750,606
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 114 | 51 | $1,856 |
| Pantoprazole Sodium | Generic | 72 | 21 | $1,296 |
| Gavilyte-G (Peg3350/Sod Sulf,Bicarb,Cl/Kcl) | Brand | 58 | 52 | $854 |
| Ursodiol | Generic | 55 | 14 | $13,862 |
| Creon (Lipase/Protease/Amylase) | Brand | 32 | 16 | $133,919 |
| Mesalamine | Generic | 26 | 0 | $12,477 |
| Colestipol Hcl | Generic | 23 | 0 | $1,962 |
| Famotidine | Generic | 21 | 0 | $523 |
| Stelara (Ustekinumab) | Brand | 21 | 0 | $578,634 |
| Carvedilol | Generic | 14 | 0 | $38 |
Hospital affiliations
Frequently asked questions
What is Dr. Andreas Stefan's medical specialty?
Dr. Andreas Stefan practices Gastroenterology Physician in Portland, ME.
Where does Dr. Andreas Stefan practice?
Dr. Andreas Stefan practices at 161 Marginal Way, Portland, ME 041012438. Office phone: 2077737964.
What is Dr. Andreas Stefan's NPI?
Dr. Andreas Stefan's National Provider Identifier (NPI) is 1831299460, issued by NPPES.
Does Dr. Andreas Stefan accept Medicare assignment?
Yes. Dr. Andreas Stefan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Andreas Stefan commonly perform?
Top Medicare-reported procedures in 2023: Pathology examination of tissue using a microscope, intermediate complexity (HCPCS 88305); 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); Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385). Source: CMS Medicare Physician & Other Practitioners file.