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About

Jamestown Area Medical Associates is part of the GLPP-Great Lakes Physician Practice network, a private, non-profit? (Privately held) group in the Hospitals and Health Care industry. Based in Jamestown, NY, GLPP consolidates primary care and specialty services across multiple Jamestown-area providers, including Jamestown Area Medical Associates, and coordinates with local hospitals to deliver integrated care. GLPP operates from its Jamestown headquarters and other locations in Chautauqua County, with ~4 offices in the United States. Contact numbers include 833-444-4577 and 716-488-1877.

Clinic Type

Internal Medicine

Address

15 S Main St. Suite #150, Jamestown, NY 14701

Phone

716-934-3641

Email

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Opening Hours

Hours of Operation: Monday - Friday: 8:00AM - 5:30PM Saturday: 7:30AM - Noon Sunday: CLOSED

Services Offered

  • Internal Medicine

Team

  • Hyder Alam, Internal Medicine — MD
  • Shaden Alfallay, Internal Medicine — MD
  • Steven Barnes, Internal Medicine — DO
  • Anthony Bartholomew, Internal Medicine — MD
  • Sarah Bartholomew, Internal Medicine — PA-C
  • Michael Guilding, Internal Medicine — MD
  • Tyler Gustafson, Internal Medicine — RPA-C
  • Courtney Hammond, Internal Medicine — PA-C
  • John M. LaMancuso, MD, FACP (Internal Medicine) — MD
  • Andrew Landis, Internal Medicine — MD
  • owski, Internal Medicine — DO
  • owiak, Internal Medicine — CRNP
  • Andrew Manoharan, Internal Medicine — MD
  • Hamza Muhammad, Internal Medicine — DO
  • Evadne C. Ong, Internal Medicine — MD
  • Xuan Huy Phan, Internal Medicine — MD
  • Carl Roth, Internal Medicine — DO
  • loff, Internal Medicine — PA-C
  • Beth Wlodarek, Internal Medicine — PA-C

Insurance & Payment

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Languages Spoken

  • English

FAQs

What are the hours of operation?

Monday - Friday: 8:00AM - 5:30PM; Saturday: 7:30AM - Noon; Sunday: CLOSED

What is the address?

Riverwalk Medical Center, 15 S. Main St., Jamestown, NY 14701

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • Various local business directories and forums: variable; ranging from 1-star to 5-star reviews across platforms (limited public patient feedback available; Indeed reviews focus on employee experiences)

Patients praise

  • some patients report positive experiences with kind, caring, and attentive physicians
  • praise for friendly and professional staff members in specific instances
  • appreciation for clean and well-maintained facility environments

Common complaints

  • reports of rude and incompetent office staff
  • difficulty scheduling appointments and long wait times for new patients
  • dissatisfaction with physician bedside manner and communication skills
  • concerns regarding medical care quality and potential misdiagnosis issues

"Got a NEW, Dr.. He IS great. He Listens. Very well. Kind and caring. Takes His Time. The Whole Staff.. From The Front Desk to The Back..Nurses, Dr, Office Area. Helping Me With All My Health issues."

— LocalityBiz Patient Review

"Rude and incompetent office staff and a rude and incompetent physician. Spends three times longer than reasonable in office visits mostly struggling with a computer and recounting details from the last visit..."

— Mappca Patient Review

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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