Sarah Shannahan, M.D.
NPI 1528470143 · Internal Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sarah Shannahan, M.D. is a Internal Medicine Physician provider in Boston, MA (NPI 1528470143).
Provider details
- NPI number
- 1528470143
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 269875 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
720 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 204 | $42 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 133 | $139 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 76 | $259 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 71 | $108 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 47 | $99 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 226 | 72 |
| Linaclotidebrand: Linzess | 80 | 14 |
| Pantoprazole Sodium | 80 | 27 |
| Famotidine | 78 | 28 |
| Esomeprazole Magnesium | 24 | — |
| Dicyclomine Hcl | 18 | — |
| Rifaximinbrand: Xifaxan | 17 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,260 across 16 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-06-02
- Last updated
- 2025-02-24
- Certified
- 2025-02-24
Frequently asked questions
- What is Sarah Shannahan's NPI number?
- Sarah Shannahan's National Provider Identifier (NPI) is 1528470143, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sarah Shannahan's specialty?
- Sarah Shannahan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sarah Shannahan located?
- Sarah Shannahan's practice location on file with NPPES is 330 Brookline Ave, Boston, MA 02215-5400.
- What is Sarah Shannahan's phone number?
- The practice phone number listed in the NPPES registry for Sarah Shannahan is (617) 667-7000.
- Does Sarah Shannahan accept Medicare?
- Sarah Shannahan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sarah Shannahan's NPI active?
- Yes — Sarah Shannahan's NPI (1528470143) is active in the NPPES registry as of the last update on 2025-02-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.