Sherrin Gallagher, NP
NPI 1538204268 · Acute Care Nurse Practitioner · Boston, MA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sherrin Gallagher, NP is a Acute Care Nurse Practitioner provider in Boston, MA (NPI 1538204268).
Provider details
- NPI number
- 1538204268
- Entity type
- Individual
- Primary specialty
- Acute Care Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 212780 (MA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
167 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 70 | $119 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 49 | $119 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 29 | $166 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 19 | $13 |
Typical Medicare-allowed amounts for these services range $13–$166 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 26 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 198 | 66 |
| Atorvastatin Calcium | 141 | 45 |
| Lisinopril | 104 | 33 |
| Apixabanbrand: Eliquis | 75 | 26 |
| Amlodipine Besylate | 73 | 26 |
| Rosuvastatin Calcium | 72 | 22 |
| Spironolactone |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-02-20
- Last updated
- 2007-07-08
Frequently asked questions
- What is Sherrin Gallagher's NPI number?
- Sherrin Gallagher's National Provider Identifier (NPI) is 1538204268, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sherrin Gallagher's specialty?
- Sherrin Gallagher is listed in the NPPES registry with a primary specialty of Acute Care Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Sherrin Gallagher located?
- Sherrin Gallagher's practice location on file with NPPES is 55 Fruit St, Boston, MA 02114-2621.
- What is Sherrin Gallagher's phone number?
- The practice phone number listed in the NPPES registry for Sherrin Gallagher is (617) 724-5110.
- Does Sherrin Gallagher accept Medicare?
- Sherrin Gallagher is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sherrin Gallagher's NPI active?
- Yes — Sherrin Gallagher's NPI (1538204268) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.