Erin Flanagin, M.D.
NPI 1144670753 · Internal Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Erin Flanagin, M.D. is a Internal Medicine Physician provider in Boston, MA (NPI 1144670753).
Provider details
- NPI number
- 1144670753
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 267904 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
10 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
583 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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 213 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 195 | $102 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 48 | $140 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 45 | $82 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 35 | $186 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 86 | 30 |
| Lisinopril | 57 | 23 |
| Losartan Potassium | 54 | 22 |
| Furosemide | 41 | 16 |
| Empagliflozinbrand: Jardiance | 37 | 12 |
| Calcitriol | 32 | 14 |
| Chlorthalidone | 28 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-06-14
- Last updated
- 2016-10-18
Frequently asked questions
- What is Erin Flanagin's NPI number?
- Erin Flanagin's National Provider Identifier (NPI) is 1144670753, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Erin Flanagin's specialty?
- Erin Flanagin is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Erin Flanagin located?
- Erin Flanagin's practice location on file with NPPES is 800 Washington St, Boston, MA 02111-1552.
- What is Erin Flanagin's phone number?
- The practice phone number listed in the NPPES registry for Erin Flanagin is (617) 636-5000.
- Does Erin Flanagin accept Medicare?
- Erin Flanagin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Erin Flanagin's NPI active?
- Yes — Erin Flanagin's NPI (1144670753) is active in the NPPES registry as of the last update on 2016-10-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.