Quick answers
- Which hospitals does John D. Chess work at?
- Medicare's official clinician data lists John D. Chess at 1 hospital: UPMC Passavant. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John D. Chess see patients?
- Medicare's clinician data lists 3 practice locations, including Butler, PA, Mars, PA and Pittsburgh, PA. Call before your visit to confirm the address.
- What is John D. Chess's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does John D. Chess accept Medicare assignment?
- Yes. Medicare's clinician data says John D. Chess accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for John D. Chess?
- (866) 874-7483, as listed in official Medicare / NPI Registry data.
- What is John D. Chess's NPI number?
- 1659330140. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John D. Chess works
Medicare's Facility Affiliation Data lists John D. Chess at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- UPMC PassavantPittsburgh, PA · Acute Care Hospital · CCN 390107
Practice locations
Addresses where John D. Chess is enrolled with Medicare (CMS data updated 2026-10-02).
- 142 Clearview Cir, Suite 110Butler, PA 16001 (866) 874‑7483
- 6998 Crider Rd, Suite 110Mars, PA 16046 (866) 874‑7483
- 9104 Babcock Blvd, Suite 2120Pittsburgh, PA 15237 (866) 874‑7483
Group practices
Medicare enrollment lists John D. Chess as a member of this group (CMS data updated 2026-10-02).
- UPMC Multispecialty Group Inc57 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Butler
Clinicians with the same Medicare primary specialty in Butler, PA — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1659330140 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians