NPPES file of Aug 9, 2026

Sarah Masukewicz, RD, LDN, CNSC

Registered Dietitian · Boston, MA

Sarah Masukewicz, RD, LDN, CNSC is a registered dietitian with a practice address in Boston, Massachusetts, and NPI 1114794773, issued on Dec 5, 2023. Check the license with the Massachusetts board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1114794773
Name
Sarah Masukewicz
Credential
RD, LDN, CNSC
Primary taxonomy
Registered Dietitian 133V00000X
Practice location
800 Washington St, Boston, MA 02111
Phone
(617) 636-4505
Enumerated
Dec 5, 2023
Record last updated
Dec 5, 2023
Medicare enrollment
Enrolled (PECOS I20260306002800); may accept 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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8 nearest registered dietitian records → All 2,244 in Massachusetts → Look up another NPI →

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 Sarah Masukewicz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Massachusetts board licenses this professionCheck 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
Find the Massachusetts license search

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Sarah Masukewicz among 2,244 registered dietitian records in Massachusetts

Sarah Masukewicz, RD, LDN, CNSC is one of 2,244 registered dietitian records with a practice address in Massachusetts. 6% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2023, is newer than 79% of them.

  • NPI issued2023 · 79% of these records are older, 17% newer
  • In a Medicare fileNo · 6% of these records are
  • In the CMS Doctors and Clinicians fileYes · 9% of these records are
  • Graduated2019 · median 2011 among the 202 with a school on file
  • Record last updated2023 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 133V00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Registered Dietitian providers in Massachusetts

There are 2,244 registered dietitian records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 2,244 in Massachusetts → Every provider in Boston → Registered Dietitian nationwide →

The 8 registered dietitian records with the nearest ZIP codes

  1. Denise Arthurs, M.S., R.D., L.D.N.Boston, MA 021111952564437
  2. Ann Efstathion, MS, RD, LDNBoston, MA 021111194979138
  3. Alanna Eisenberg, MS, RD, LDNBoston, MA 021111548546823
  4. Kerri Hawkins, MS, RD, LDNBoston, MA 021111083746424
  5. Catherine Hsu, R.D.Boston, MA 021111265643464
  6. Margaret Ip, R.D. L.D.N.Boston, MA 021111912193251
  7. Kelly Kane, MS, RD, LDNBoston, MA 021111912122730
  8. Suzanne Kao, RD, LDN, MSBoston, MA 021111518172741

Common questions

What is Sarah Masukewicz, RD, LDN, CNSC's NPI number?

Sarah Masukewicz, RD, LDN, CNSC's National Provider Identifier (NPI) is 1114794773, issued on Dec 5, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Sarah Masukewicz, RD, LDN, CNSC located?

The NPPES record lists a practice address at 800 Washington St, Boston, MA, 02111. Phone: (617) 636-4505. Providers update this record themselves, so call before visiting.

How can I verify Sarah Masukewicz, RD, LDN, CNSC's license?

Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.