Mark G. Seymour, M.D.
Family Medicine Physician · Randolph, VT
Mark G. Seymour, M.D. is a family medicine physician with a practice address in Randolph, Vermont, and NPI 1235142050, issued on Aug 14, 2006. Check the license (Vermont 0320000351, as entered in NPPES) on the Vermont Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Mark G. Seymour
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 0320000351 VT
Self-reported in NPPES; status is on the state search - Practice location
- 44 S Main St, Randolph, VT 05060
- Phone
- (802) 234-9913
- Enumerated
- Aug 14, 2006
- Record last updated
- May 1, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (802) 728-2394
- Medicaid ID
- 0009465 VT
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 443 in Vermont → Look up another NPI →
Also registered at 44 S Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Nicolas Benoit, D.P.M.Podiatrist1992896948
- Jonathan Bjork, D.P.M.Foot & Ankle Surgery Podiatrist1639514722
Verify Mark G. Seymour in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVermont Board of Medical Practice
Search for license 0320000351Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average family medicine physician in 2024
1,144 Medicare Part D claims for 283 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Atorvastatin Calcium96 claims
- Lisinopril84 claims
- Amlodipine Besylate52 claims
- Losartan Potassium48 claims
- Pravastatin Sodium47 claims
- Levothyroxine Sodium42 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.
Mark G. Seymour among 443 family medicine physician records in Vermont
Mark G. Seymour, M.D. is one of 443 family medicine physician records with a practice address in Vermont. 74% 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 11% of them.
- NPI issued2006 · 11% of these records are older, 43% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2014 · 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 207Q00000X and a Vermont practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 family medicine physician records list a practice address in Randolph
They are 10 of the 264 NPPES records with a practice address in Randolph, and 443 family medicine physician records in Vermont.
All 443 in Vermont → Every provider in Randolph → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Jeffery Allyn, M.D.Randolph, VT 050601386639516
- Kenneth Borie, M.D.Randolph, VT 050601144233206
- Terry Cantlin, D.O.Randolph, VT 050601447364971
- Marcus Coxon, M.D.Randolph, VT 050601245243302
- Emilija Florance, MDRandolph, VT 050601326434713
- Hannah Geldermann, DO, MPHRandolph, VT 050601649973306
- Jessica Heney, MDRandolph, VT 050601417395930
- Robert Kiess, M.D.Randolph, VT 050601164538591
Common questions
What is Mark G. Seymour, M.D.'s NPI number?
Mark G. Seymour, M.D.'s National Provider Identifier (NPI) is 1235142050, issued on Aug 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark G. Seymour, M.D. located?
The NPPES record lists a practice address at 44 S Main St, Randolph, VT, 05060. Phone: (802) 234-9913. Providers update this record themselves, so call before visiting.
How can I verify Mark G. Seymour, M.D.'s license?
NPPES lists Vermont license number 0320000351, as entered by the provider. Search the Vermont Board of Medical Practice at https://www.healthvermont.gov/systems/board-medical-practice. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark G. Seymour, M.D. prescribe under Medicare Part D?
In 2024, Mark G. Seymour, M.D. had 1,144 Medicare Part D claims for 283 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.