Quick answers
- Which hospitals does David R. Giammar work at?
- Medicare's official clinician data lists David R. Giammar at 5 hospitals: Aultman Hospital, Coshocton Regional Medical Center, Grand Lake Health System, Mercer County Joint Township Community Hospital and Riverside Methodist Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does David R. Giammar see patients?
- Medicare's clinician data lists 6 practice locations, including Saint Marys, OH, Coshocton, OH and Canton, OH. Call before your visit to confirm the address.
- What is David R. Giammar's specialty?
- Medicare lists Colorectal Surgery (Proctology) as the primary specialty, and also General Surgery.
- Does David R. Giammar accept Medicare assignment?
- Yes. Medicare's clinician data says David R. Giammar 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 David R. Giammar?
- (419) 394-9595, as listed in official Medicare / NPI Registry data.
- What is David R. Giammar's NPI number?
- 1154307858. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where David R. Giammar works
Medicare's Facility Affiliation Data lists David R. Giammar at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Aultman HospitalCanton, OH · Acute Care Hospital · CCN 360084
- Coshocton Regional Medical CenterCoshocton, OH · Acute Care Hospital · CCN 360109
- Grand Lake Health SystemSaint Marys, OH · Acute Care Hospital · CCN 360032
- Mercer County Joint Township Community HospitalColdwater, OH · Acute Care Hospital · CCN 360058
- Riverside Methodist HospitalColumbus, OH · Acute Care Hospital · CCN 360006
Practice locations
Addresses where David R. Giammar is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 1140 S Knoxville Ave, Suite C1Saint Marys, OH 45885 (419) 394‑9595
- 1460 Orange StCoshocton, OH 43812 (740) 622‑6411
- 2600 6th St SWCanton, OH 44710 (330) 455‑8000
- 2600 Tuscarawas St W, Suite 600Canton, OH 44708 (330) 453‑4300
- 477 Cooper Rd, Suite 440Westerville, OH 43081 (380) 898‑5561
Group practices
Medicare enrollment lists David R. Giammar as a member of these groups (CMS data updated 2026-10-02).
- Ohio Specialty Physicians Corporation65 clinicians in the group
- JTDM Family Practice LLC47 clinicians in the group
- Prime Healthcare Foundation - Coshocton, LLC27 clinicians in the group
Specialties
Find other Colorectal Surgery (Proctology) doctors in Ohio →
Other colorectal surgeons in Ohio
Clinicians with the same Medicare primary specialty in Ohio — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Northeastern Ohio University College Of Medicine |
| Graduation year | 1996 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1154307858 |
| 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