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About

- Location: Headquartered in Park City, Utah, with 3 offices in the United States (Salt Lake City, Park City HQ, and Park City, UT). - Contact: Phone numbers 435-940-9400 / 435-940-9405. - Organization details: Small practice (3 employees), part of Intermountain Health, with a focus on family medicine and related services.

Clinic Type

Primary Care

Address

70 Cattail Drive, Lewistown, MT 59457

Phone

//385-297-4198

Email

intermountainnews@imail.org

Opening Hours

Not published — contact the clinic to confirm hours.

Services Offered

  • Primary care
  • Family medicine
  • Senior primary care
  • Pediatrics

Team

  • Jason Edward Sarisky — DO
  • Penny M. Denning — PA

Insurance & Payment

—

Languages Spoken

—

Current Offers

New patient appointments in 1 week

Photos

What Patients Say

Overall sentiment across review platforms: positive

  • Intermountain Health Provider Portal: 4.7/5 (81 ratings, 26 reviews (for Dr. Jason Edward Sarisky))
  • Intermountain Health Provider Portal: 4.4/5 to 4.5/5 (70 ratings, 9 reviews (for Penny M. Denning, PA))

Patients praise

  • Providers are described as knowledgeable, thorough, and professional.
  • Patients appreciated the ease of communication, accessibility, and the ability to ask questions.
  • Providers are credited with being good listeners and treating patients with respect and kindness.

Common complaints

  • Some patients reported feeling dismissed or not examined thoroughly during visits.
  • One patient noted a concern about a provider appearing unprepared or needing to review background information during the appointment.

"Very knowledgeable, listens to your concerns, he gives options on what to do, and very easy to talk to."

— Patient review for Dr. Jason Edward Sarisky

"Love Penny. She is one of the best around, if she wasn’t I wouldn’t have followed her to Lewistown!"

— Patient review for Penny M. Denning, PA

"He did not take any time to examine my symptoms, made a snap decision, and dismissed me."

— Patient review for Dr. Jason Edward Sarisky

Synthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].

Information sourced from the clinic's website as of July 11, 2026.

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