Doctor profile · Federal record
Dr. Sarah Shannahan, M.D.
Internal Medicine Physician (CMS: Gastroenterology) · Gastroenterology Physician · Boston, MA
- NPI 1528470143
- Accepts Medicare
- 12 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
330 Brookline Ave
Boston, MA 022155400
(617) 667-7000
Credentials & registration
- NPI registered
- June 2014 — 12 yrs on file
- Profile last updated
- February 24, 2025
- Year of graduation
- 2014 — 12 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State licenses (2)
- Massachusetts #259668 · Massachusetts #269875
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1528470143. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
847
Distinct HCPCS
10
Medicare allowed
$95,848
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
88305 |
Pathology examination of tissue using a microscope, intermediate complexity | 235 | 92 | $42 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 174 | 131 | $140 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 100 | 98 | $261 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 78 | 72 | $89 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 48 | 48 | $74 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 42 | 37 | $99 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 42 | 40 | $138 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 42 | 38 | $84 | |
88342 |
Special stained specimen slides to examine tissue, initial procedure | 29 | 26 | $81 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 29 | 29 | $182 |
In context: peer comparison
Among 547 peers in this city , average services per provider: 81. This provider delivers 10× the peer median.Open Payments
Industry payments received
All-time total
$3,260
Transactions
16
Manufacturers
6
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Novo Nordisk Inc | 3 | $2,837.50 | |
| Janssen Biotech, Inc. | 6 | $269.32 | |
| Celgene Corporation | 4 | $84.00 | |
| PFIZER INC. | 1 | $26.44 | |
| ABBVIE INC. | 1 | $25.11 | |
| Takeda Pharmaceuticals U.S.A., Inc. | 1 | $17.29 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
449
Patients
150
Total drug cost
$87,950
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 166 | 66 | $6,547 |
| Pantoprazole Sodium | Generic | 67 | 25 | $1,665 |
| Linzess (Linaclotide) | Brand | 53 | 11 | $34,362 |
| Famotidine | Generic | 52 | 19 | $770 |
| Esomeprazole Magnesium | Generic | 22 | 0 | $3,041 |
| Colestipol Hcl | Generic | 19 | 0 | $3,879 |
| Dicyclomine Hcl | Generic | 19 | 0 | $360 |
| Sutab (Sod Sulf/Pot Chloride/Mag Sulf) | Brand | 18 | 18 | $3,040 |
| Gavilyte-G (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 11 | 11 | $197 |
| Lubiprostone | Generic | 11 | 0 | $3,114 |
Hospital affiliations
Frequently asked questions
What is Dr. Sarah Shannahan's medical specialty?
Dr. Sarah Shannahan practices Internal Medicine Physician in Boston, MA.
Where does Dr. Sarah Shannahan practice?
Dr. Sarah Shannahan practices at 330 Brookline Ave, Boston, MA 022155400. Office phone: 6176677000.
What is Dr. Sarah Shannahan's NPI?
Dr. Sarah Shannahan's National Provider Identifier (NPI) is 1528470143, issued by NPPES.
Does Dr. Sarah Shannahan accept Medicare assignment?
Yes. Dr. Sarah Shannahan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Sarah Shannahan commonly perform?
Top Medicare-reported procedures in 2023: Pathology examination of tissue using a microscope, intermediate complexity (HCPCS 88305); Established patient office or other outpatient visit (HCPCS 99214); Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385). Source: CMS Medicare Physician & Other Practitioners file.