NPPES file of Aug 9, 2026

Joymon K. Sebastian, NP

Family Nurse Practitioner · Dartmouth, MA

Joymon K. Sebastian, NP is a family nurse practitioner with a practice address in Dartmouth, Massachusetts, and NPI 1437668241, issued on Sep 25, 2017. Check the license (Massachusetts 266755, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1437668241
Name
Joymon K. Sebastian
Credential
NP
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
266755 MA
Self-reported in NPPES; status is on the state search
Practice location
535 Faunce Corner RD, Dartmouth, MA 02747
Phone
(508) 996-3991
Enumerated
Sep 25, 2017
Record last updated
Apr 25, 2023
Medicare enrollment
Enrolled (PECOS I20180118001882); 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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8 nearest family nurse practitioner records → All 4,724 in Massachusetts → Look up another NPI →

Also registered at 535 Faunce Corner RD

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

  1. Erica Ahaesy, FNPFamily Nurse Practitioner1568891620
  2. Debby Almeida, MDFamily Medicine Physician1134289127
  3. Jean AmorePhysician Assistant1932082963
  4. Sharon Anderson, M.S., CCC-AAudiologist1083864110
  5. Luiza Arbain, PHARMD.Pharmacist1245232099
  6. Selina AvelinoAdult Health Nurse Practitioner1831839059

Verify Joymon K. Sebastian in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
    Search for license 266755    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
Find 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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5.9 times the Medicare Part D claims of the average family nurse practitioner in 2024

7,696 Medicare Part D claims for 770 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 58% of claims.

  1. Joymon Sebastian7,696
  2. Specialty average1,305

Most prescribed

  1. Trulicity889 claims
  2. Jardiance653 claims
  3. Metformin Hcl583 claims
  4. Levothyroxine Sodium385 claims
  5. Ozempic381 claims
  6. Lantus Solostar370 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.

Industry payments in 2024: $1,378.51

10 payments; by number, the most common kind was travel and lodging; the largest payer was Medtronic, Inc. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Joymon Sebastian$1,378.51
  2. Specialty average$650.95

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Medical Care OF Boston Management CorporationSharon, MA

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

Joymon K. Sebastian among 4,724 family nurse practitioner records in Massachusetts

Joymon K. Sebastian, NP is one of 4,724 family nurse practitioner records with a practice address in Massachusetts. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 44% of them.

  • NPI issued2017 · 44% of these records are older, 51% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 57% of these records are
  • Graduated2017 · median 2019 among the 2,704 with a school on file
  • Record last updated2023 · 42% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

30 family nurse practitioner records list a practice address in Dartmouth

They are 30 of the 513 NPPES records with a practice address in Dartmouth, and 4,724 family nurse practitioner records in Massachusetts.

All 4,724 in Massachusetts → Every provider in Dartmouth → Family Nurse Practitioner nationwide →

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Barbara Agee, FNPNorth Dartmouth, MA 027471932198348
  2. Erica Ahaesy, FNPDartmouth, MA 027471568891620
  3. Christiana Akanegbu, NPNorth Dartmouth, MA 027471659607398
  4. Michelle BisnawNorth Dartmouth, MA 027471518348283
  5. Erica Cabral, MSN, FNP-BCDartmouth, MA 027471275934382
  6. Rebecca Chase, F.N.P.Dartmouth, MA 027471073580148
  7. Sheila Dorgan, NPN Dartmouth, MA 027471740279165
  8. Heather Dufour, FNPDartmouth, MA 027471063838811

Common questions

What is Joymon K. Sebastian, NP's NPI number?

Joymon K. Sebastian, NP's National Provider Identifier (NPI) is 1437668241, issued on Sep 25, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Joymon K. Sebastian, NP located?

The NPPES record lists a practice address at 535 Faunce Corner RD, Dartmouth, MA, 02747. Phone: (508) 996-3991. Providers update this record themselves, so call before visiting.

How can I verify Joymon K. Sebastian, NP's license?

NPPES lists Massachusetts license number 266755, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.

How much does Joymon K. Sebastian, NP prescribe under Medicare Part D?

In 2024, Joymon K. Sebastian, NP had 7,696 Medicare Part D claims for 770 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions 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. 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.