Erin Little, M.D.
NPI 1770978835 · Rheumatology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Erin Little, M.D. is a Rheumatology Physician provider in Boston, MA (NPI 1770978835).
Provider details
- NPI number
- 1770978835
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- MD17006 (RI)
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 tenure28% of score
11 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
381 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 198 | $97 |
| 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 | 95 | $16 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 43 | $143 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 16 | $132 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 15 | $65 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methotrexate Sodiumbrand: Methotrexate | 195 | 82 |
| Hydroxychloroquine Sulfate | 185 | 63 |
| Prednisone | 173 | 84 |
| Alendronate Sodium | 107 | 35 |
| Adalimumabbrand: Humira(cf) Pen | 96 | 16 |
| Allopurinol | 90 | 25 |
| Etanerceptbrand: Enbrel Sureclick |
Practice location
Mailing address
Additional practice locations (2)
- 79 Retreat AveHartford Hospital Adult Primary CareHartford, CT 06106-2527Phone: (860) 545-0200
- 407 East Ave Ste 250Pawtucket, RI 02860-5299Phone: (401) 606-1620
Registry dates
- Enumerated
- 2015-04-05
- Last updated
- 2020-05-27
- Certified
- 2020-05-27
Frequently asked questions
- What is Erin Little's NPI number?
- Erin Little's National Provider Identifier (NPI) is 1770978835, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Erin Little's specialty?
- Erin Little is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Erin Little located?
- Erin Little's practice location on file with NPPES is 800 Washington St, Boston, MA 02111.
- What is Erin Little's phone number?
- The practice phone number listed in the NPPES registry for Erin Little is (617) 636-5990.
- Does Erin Little accept Medicare?
- Erin Little is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Erin Little's NPI active?
- Yes — Erin Little's NPI (1770978835) is active in the NPPES registry as of the last update on 2020-05-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.