Registry data as of Aug 27, 2026

Erin Little, M.D.

Rheumatology Physician · Boston, MA

Erin Little, M.D. is a rheumatology physician with a practice address in Boston, Massachusetts, and NPI 1770978835, issued on Apr 5, 2015. Check the license (Massachusetts 274549, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1770978835
Name
Erin Little
Credential
M.D.
Primary taxonomy
Rheumatology Physician 207RR0500X
License numbers
274549 MA
MD30353 ME
MD17006 RI
Self-reported in NPPES; status is on the state search
Practice location
800 Washington St, Boston, MA 02111
Phone
(617) 636-5990
Enumerated
Apr 5, 2015
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 800 Washington St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jeffrey Aalberg, MD, MPHSurgery Physician1326788027
  2. Omer Abbak, PHARMDPharmacist1114500337
  3. Aya Abdelnaser, MDStudent in an Organized Health Care Education/Training Program1770425373
  4. Marie Elise Abi Antoun, MDObstetrics & Gynecology Physician1356042626
  5. Ahmad AboalfarajSurgery Physician1538517651
  6. Tala Abu Samaan, MDStudent in an Organized Health Care Education/Training Program1376386250

Verify Erin Little in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
    Search for license 274549    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Open the Massachusetts license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

28% fewer Medicare Part D claims than the average rheumatology physician in 2024

1,483 Medicare Part D claims for 339 beneficiaries, against an average of 2,058 among the 4,833 providers of this specialty who prescribed in Part D. 26 claims were for opioids.

  1. Erin Little1,483
  2. Specialty average2,058

Most prescribed

  1. Methotrexate195 claims
  2. Hydroxychloroquine Sulfate185 claims
  3. Prednisone173 claims
  4. Alendronate Sodium107 claims
  5. Humira(Cf) Pen96 claims
  6. Allopurinol90 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

One hospital or facility affiliation

  1. Rhode Island HospitalPawtucket, RI · Acute Care Hospitals4 of 5 stars

Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Rheumatology Physician providers in Massachusetts

There are 262 rheumatology physician records in Massachusetts.

All 262 in Massachusetts → Every provider in Boston →

Other rheumatology physician records in Massachusetts

  1. Maria Abruzzo, M.D.Gardner, MA1215036132
  2. Munir Ahmad, M.D.Palmer, MA1124126602
  3. Syed Ahmed, M.D.Boston, MA1407829948
  4. Ghousia Alikhan, M.D.Holyoke, MA1801275383
  5. Antonios Aliprantis, M.D.Chestnut Hill, MA1598723090
  6. Juliann AllenHolyoke, MA1356835318
  7. Laura Amorese-O'Connell, MDAttleboro, MA1518278290
  8. Paul Anderson, M.D., PH.D.Boston, MA1235127432
  9. Ronald Anderson, MDBoston, MA1154388478
  10. Senada Arabelovic, DOPlymouth, MA1053340950

Common questions

What is Erin Little, M.D.'s NPI number?

Erin Little, M.D.'s National Provider Identifier (NPI) is 1770978835, issued on Apr 5, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Erin Little, M.D. located?

The NPPES record lists a practice address at 800 Washington St, Boston, MA, 02111. Phone: (617) 636-5990. Providers update this record themselves, so call before visiting.

How can I verify Erin Little, M.D.'s license?

NPPES lists Massachusetts license number 274549, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://www.mass.gov/orgs/board-of-registration-in-medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Erin Little, M.D. prescribe under Medicare Part D?

In 2024, Erin Little, M.D. had 1,483 Medicare Part D claims for 339 beneficiaries; the average among rheumatology physician prescribers was 2,058. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Compiled from official public sources by the editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.