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Physician Assistant

Tonya J. Seymour, PA

Works at hospitals in Potsdam, NY · New York

Summary

Tonya J. Seymour, PA is a physician assistant at 201 Market St, Suite E, Potsdam, NY 13676. Phone: (315) 274-9102. Accepts Medicare assignment. In 2024, Tonya J. Seymour had 93 Original Medicare patients and 277 services. NPI 1558773341. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Physician assistant
  • Address: 201 Market St, Suite E, Potsdam, NY 13676 · Directions (1 more location)
  • Phone: (315) 274‑9102
  • Medicare: Accepts Medicare assignment
  • Hospital: Canton-Potsdam Hospital
  • Group practice: Canton-Potsdam Hospital
  • School: graduated 2014
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Tonya J. Seymour, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Tonya J. Seymour accept Medicare assignment?
Yes. Medicare's clinician data says Tonya J. Seymour accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Tonya J. Seymour see?
In 2024, CMS data shows 93 Original Medicare patients and 277 services for Tonya J. Seymour. This counts Original Medicare only and measures volume, not quality.
What is Tonya J. Seymour's NPI number?
1558773341. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Tonya J. Seymour, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients93
Services billed to Medicare277
Different services or procedures14
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)101 services
  2. Critical care, first 30-74 minutes (99291)43 services
  3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)39 services
  4. Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)31 services
  5. Hospital discharge day management, more than 30 minutes (99239)27 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • COPD52%
  • Arthritis49%
  • Ischemic heart disease49%
  • Heart failure49%

Hospitals where Tonya J. Seymour works

Medicare's Facility Affiliation Data lists Tonya J. Seymour at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • Canton-Potsdam HospitalPotsdam, NY · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 330197

Practice locations

Addresses where Tonya J. Seymour is enrolled with Medicare (CMS data updated October 2, 2026).

  • 201 Market St, Suite EPotsdam, NY 13676 (315) 274‑9102
  • 50 Leroy StPotsdam, NY 13676

Group practices

Medicare enrollment lists Tonya J. Seymour as a member of this group (CMS data updated October 2, 2026).

  • Canton-Potsdam Hospital252 clinicians in the group

Specialties

Find other clinicians: Physician Assistant, New York →

Other physician assistants in Potsdam

Clinicians with the same Medicare primary specialty in Potsdam, NY — not a recommendation.

All physician assistants in Potsdam →

Other clinicians in Canton-Potsdam Hospital

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialPA
Graduation year2014
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1558773341
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians