NPPES file of Aug 9, 2026

Sarah Chamseddine, M.D.

Pediatric Allergy/Immunology Physician · Boston, MA

Sarah Chamseddine, M.D. is a pediatric allergy/immunology physician with a practice address in Boston, Massachusetts, and NPI 1275197550, issued on Apr 23, 2019. Check the license (Massachusetts 1020299, 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, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1275197550
Name
Sarah Chamseddine
Credential
M.D.
Primary taxonomy
Pediatric Allergy/Immunology Physician 2080P0201X
License number
1020299 MA
Self-reported in NPPES; status is on the state search
Practice location
300 Longwood Ave, Boston, MA 02115
Phone
(617) 355-6000
Enumerated
Apr 23, 2019
Record last updated
May 30, 2025
Medicare enrollment
Enrolled (PECOS I20250605001869); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 300 Longwood Ave

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

  1. Sylvia Abadir, MDPediatric Cardiology Physician1427366459
  2. Isabel Abbott, MDNeurology with Special Qualifications in Child Neurology Physician1033772579
  3. Kristin Abdelnour, PTPhysical Therapist1982821302
  4. Mohamed Abdelrahman, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1558050591
  5. Nadia Abdulrazak, N.P.Adult Health Nurse Practitioner1952616682
  6. Dhatri AbeyaratneStudent in an Organized Health Care Education/Training Program1437098233

Verify Sarah Chamseddine 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 1020299    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.

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Bills Medicare through one group practice

  1. Children's Hospital Pediatric Associates, IncBoston, MA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Pediatric Allergy/Immunology Physician providers in Massachusetts

There are 30 pediatric allergy/immunology physician records in Massachusetts.

All 30 in Massachusetts → Every provider in Boston →

Other pediatric allergy/immunology physician records in Massachusetts

  1. Tina Banzon, MDBoston, MA1821597253
  2. Lisa Bartnikas, M.D.Boston, MA1578730990
  3. Ana Broyles, MDBoston, MA1346330446
  4. Caitlin Burk, MDBoston, MA1033640842
  5. Elena Crestani, M.D.Boston, MA1790084796
  6. Brittany Esty, M.D.Boston, MA1972894988
  7. Michele Gottlieb, M.D.Southborough, MA1568488161
  8. Rebecca Hale, MD/PHDBoston, MA1629500228
  9. Ronit Herzog, MDBoston, MA1346317823
  10. David Hoytema Van Konijnenburg, MD, PHDBoston, MA1134623150

Common questions

What is Sarah Chamseddine, M.D.'s NPI number?

Sarah Chamseddine, M.D.'s National Provider Identifier (NPI) is 1275197550, issued on Apr 23, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Sarah Chamseddine, M.D. located?

The NPPES record lists a practice address at 300 Longwood Ave, Boston, MA, 02115. Phone: (617) 355-6000. Providers update this record themselves, so call before visiting.

How can I verify Sarah Chamseddine, M.D.'s license?

NPPES lists Massachusetts license number 1020299, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.