Quick answers
- Which hospitals does Timothy Obrien work at?
- Medicare's official clinician data lists Timothy Obrien at 5 hospitals: Parma Community General Hospital, UH Cleveland Medical Center, UH St John Medical Center, Uhhs Memorial Hospital of Geneva and University Hospitals Portage Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Timothy Obrien see patients?
- Medicare's clinician data lists 1 practice location in Cleveland, OH. Call before your visit to confirm the address.
- What is Timothy Obrien's specialty?
- Medicare lists Hematology/Oncology as the primary specialty, and also Medical Oncology.
- Does Timothy Obrien accept Medicare assignment?
- Yes. Medicare's clinician data says Timothy Obrien 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.
- Does Timothy Obrien offer telehealth?
- Medicare's clinician data says Timothy Obrien offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Timothy Obrien?
- (216) 844-1000, as listed in official Medicare / NPI Registry data.
- What is Timothy Obrien's NPI number?
- 1487728937. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Timothy Obrien works
Medicare's Facility Affiliation Data lists Timothy Obrien at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Parma Community General HospitalParma, OH · Acute Care Hospital · CCN 360041
- UH Cleveland Medical CenterCleveland, OH · Acute Care Hospital · CCN 360137
- UH St John Medical CenterWestlake, OH · Acute Care Hospital · CCN 360123
- Uhhs Memorial Hospital of GenevaGeneva, OH · Critical Access Hospital · CCN 361307
- University Hospitals Portage Medical CenterRavenna, OH · Acute Care Hospital · CCN 360078
Practice locations
Addresses where Timothy Obrien is enrolled with Medicare (CMS data updated 2026-10-02).
- 11100 Euclid AveCleveland, OH 44106 (216) 844‑1000
Group practices
Medicare enrollment lists Timothy Obrien as a member of this group (CMS data updated 2026-10-02).
- University Hospitals Medical Group Inc2,294 clinicians in the group
Specialties
- Hematology/Oncologyprimary
- Medical Oncologyalso
Other hematologist-oncologists in Cleveland
Clinicians with the same Medicare primary specialty in Cleveland, OH — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Rochester School Of Medicine And Dentistry |
| Graduation year | 1989 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1487728937 |
| 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