Internal Medicine in Jamestown, NY - Find a UPMC Provider
Internal Medicine • Jamestown, NY
Clinic Type
Internal Medicine
Address
15 South Main Street, Suite 150, Jamestown, NY 14701
Phone
716-483-0113
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Opening Hours
Not published — contact the clinic to confirm hours.
Emergency Care
For medical emergency, call 911 or go to the nearest emergency department.
Services Offered
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Insurance & Payment
Languages Spoken
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Social Media
Photos





What Patients Say
Overall sentiment across review platforms: mixed
- UPMC Provider Portal (Dr. Evadne C. Ong): 4.9/5
- Birdeye (Dr. Evadne C. Ong): 4.0/5 (13 reviews)
- UPMC Provider Portal (Dr. John M. Lamancuso): 4.9/5 (481 ratings, 89 reviews)
- Healthgrades/Vitals (Dr. John M. Lamancuso): 3.0 to 3.9/5 (2 to 8 reviews)
- US News Hospital Patient Experience Score (UPMC Chautauqua): 3/5 (N/A)
Patients praise
- Strong professional reputations for long-standing local internists
- Patients describe providers as thorough, knowledgeable, and caring in many instances
- High ratings on official UPMC provider portals for major practitioners
- Long-term patient relationships spanning decades
Common complaints
- Condescending communication style reported by some patients
- Concerns about nursing staff phone etiquette and lack of tact
- Reports of rushed appointments and dismissive attitudes toward mental health or younger patients
- Hospital-level patient experience ratings lower than national averages
"Dr. LaMancuso is a very professional, and caring doctor. He takes pride in his work and listens to the concerns of his patients. I highly recommend Dr. LaMancuso as a physician."
— UPMC Provider Portal Review"Recently had to speak with a nurse via phone. Whomever nurse I spoke with phone skills were sub-par. No tact whatsoever. Been going to Dr. Ong for a few years and would like to continue, but she needs to check her boisterous nurse's phone skills."
— Birdeye Review"This guy will not care about you if you are under the age of 50. Acts like mental health is not a serious issue. Never took me seriously."
— Healthgrades ReviewSynthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].
In the News
- Dr. Shaden I. Alfallay, MD - Jamestown, NY - Internal Medicine - Book Appointment — May 12, 2026
- Dr. John M. Lamancuso, MD - Jamestown, NY - Internal Medicine - Book Appointment — Apr 21, 2026
- Courtney L. Hammond, PA-C - Jamestown, NY - Internal Medicine — May 14, 2026
- Dr. George Lam So, MD - Jamestown, NY - Cardiology - Book Appointment — Apr 16, 2026
- Dr. Keith W. Kulju, MD - Jamestown, NY - Gastroenterology - Book Appointment — May 6, 2026
Information sourced from the clinic's website as of July 11, 2026.
More internal medicine clinics in Jamestown
FHMS Jamestown, NY Offices - Family Health Medical Services, PLLC (FHMS) is a private medical practice providing primary care to families in Western New York for 40+ years. - Headquarters and key Jamestown locations: - 103 Allen St, Jamestown, NY 14701 (HQ) - 31 Sherman St, Suite 2200 & 2600, Jamestown, NY 14701 - Other NY offices in the FHMS Jamestown area include: - 216 E Main St, Westfield, NY 14787 - 95 East Chautauqua Street, Mayville, NY 14757 - 95 E Chautauqua St, Mayville, NY 14757 - Quick facts: - Industry: Medical Practices; Type: Partnership - Founded: 1982; Headquarters: Jamestown, NY - 7 offices across the United States (7 in NY region listed above) - Contact: main phone lines include (716) 326-3240 and (716) 484-4033 If you need driving directions, specific office hours, or to schedule an appointment, I can look up the exact contact details for a Jamestown location or provide link to the FHMS location page.
Summary: 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.
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