NPPES file of Aug 9, 2026

Stephen M. Gemmett, MD

Vascular Surgery Physician · Dover, NH

Stephen M. Gemmett, MD is a vascular surgery physician with a practice address in Dover, New Hampshire, and NPI 1518928316, issued on Mar 31, 2006. Check the license (New Hampshire 12061, as entered in NPPES) on the New Hampshire Board of Medicine; 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
1518928316
Name
Stephen M. Gemmett
Credential
MD
Primary taxonomy
Vascular Surgery Physician 2086S0129X
License number
12061 NH
Self-reported in NPPES; status is on the state search
Practice location
19 Old Rollinsford RD, Dover, NH 03820
Phone
(603) 516-4265
Enumerated
Mar 31, 2006
Record last updated
Jun 18, 2015 (not updated in 11 years: call before relying on the address or phone)
Fax
(603) 740-2173
Medicaid IDs
1518928316 ME
3075234 NH
Medicare enrollment
Enrolled (PECOS I20040127001040); accepts Medicare assignment
Medical or professional school
Albany Medical College Of Union University, 1991
Telehealth
Offers telehealth (CMS)
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 19 Old Rollinsford RD

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

  1. Marjorie Colson, ARNPPrimary Care Nurse Practitioner1427034503
  2. William Danford, MDCardiovascular Disease Physician1598798332
  3. Lisa Lang, APRNAdult Health Nurse Practitioner1376647990
  4. Emily MedeirosPhysician Assistant1699123398
  5. Faisal Shamshad, MDInterventional Cardiology Physician1225022320
  6. Kristy Webster, MDCardiovascular Disease Physician1609213768

Verify Stephen M. Gemmett in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNew Hampshire Board of Medicine
    Search for license 12061
    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 New Hampshire 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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25% more Medicare Part D claims than the average vascular surgery physician in 2024

251 Medicare Part D claims for 72 beneficiaries, against an average of 201 among the 3,936 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 14 claims were for opioids.

  1. Stephen Gemmett251
  2. Specialty average201

Most prescribed

  1. Atorvastatin Calcium47 claims
  2. Clopidogrel43 claims
  3. Eliquis23 claims
  4. Cilostazol22 claims
  5. Rosuvastatin Calcium17 claims
  6. Hydrocodone-Acetaminophen11 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: $352.93

3 payments; by number, the most common kind was food and beverage; the largest payer was Inari Medical, Inc. The 4,059 providers of this specialty with any payment received $6,178.00 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Stephen Gemmett$352.93
  2. Specialty average$6,178.00

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. Wentworth Douglass Physician CorporationDover, NH

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

Stephen M. Gemmett among 41 vascular surgery physician records in New Hampshire

Stephen M. Gemmett, MD is one of 41 vascular surgery physician records with a practice address in New Hampshire. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.

  • NPI issued2006 · 5% of these records are older, 51% newer
  • In a Medicare fileYes · 85% of these records are
  • In the CMS Doctors and Clinicians fileYes · 78% of these records are
  • Graduated1991 · median 2005 among the 32 with a school on file
  • Record last updated2015 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2086S0129X and a New Hampshire practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Vascular Surgery Physician providers in New Hampshire

There are 41 vascular surgery physician records in New Hampshire.

The 8 vascular surgery physician records with the nearest ZIP codes

  1. Ritoban Sen, MDDover, NH 038201306076765
  2. Michael Southworth, MDDover, NH 038201306822481
  3. Eric Leefmans, M.D.Exeter, NH 038331568485779
  4. Tolulope Akinyemi, M.D.Portsmouth, NH 038011871759480
  5. Wilmer Jones, MDPortsmouth, NH 038011487666319
  6. Syed Peeran, MDPortsmouth, NH 038011255593828
  7. Angela Jellison, MDRochester, NH 038671356661250
  8. Matthew AlefLebanon, NH 037561639371610

Common questions

What is Stephen M. Gemmett, MD's NPI number?

Stephen M. Gemmett, MD's National Provider Identifier (NPI) is 1518928316, issued on Mar 31, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Stephen M. Gemmett, MD located?

The NPPES record lists a practice address at 19 Old Rollinsford RD, Dover, NH, 03820. Phone: (603) 516-4265. Providers update this record themselves, so call before visiting.

How can I verify Stephen M. Gemmett, MD's license?

NPPES lists New Hampshire license number 12061, as entered by the provider. Search the New Hampshire Board of Medicine at https://www.oplc.nh.gov/board-medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Stephen M. Gemmett, MD prescribe under Medicare Part D?

In 2024, Stephen M. Gemmett, MD had 251 Medicare Part D claims for 72 beneficiaries; the average among vascular surgery physician prescribers was 201. 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.

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.