Quick answers
- Which hospitals does Michael Obrien work at?
- Medicare's official clinician data lists Michael Obrien at 2 hospitals: Saint Mary's Hospital and Waterbury Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michael Obrien see patients?
- Medicare's clinician data lists 1 practice location in Waterbury, CT. Call before your visit to confirm the address.
- What is Michael Obrien's specialty?
- Medicare lists Neurosurgery as the primary specialty.
- Does Michael Obrien accept Medicare assignment?
- Yes. Medicare's clinician data says Michael 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.
- What is the phone number for Michael Obrien?
- (203) 755-6677, as listed in official Medicare / NPI Registry data.
- What is Michael Obrien's NPI number?
- 1386175701. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michael Obrien works
Medicare's Facility Affiliation Data lists Michael Obrien at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Saint Mary's HospitalWaterbury, CT · Acute Care Hospital · CCN 070016
- Waterbury HospitalWaterbury, CT · Acute Care Hospital · CCN 070005
Practice locations
Addresses where Michael Obrien is enrolled with Medicare (CMS data updated 2026-10-02).
- 500 Chase PkwyWaterbury, CT 06708 (203) 755‑6677
Group practices
Medicare enrollment lists Michael Obrien as a member of this group (CMS data updated 2026-10-02).
- Neurosurgery Orthopaedics and Spine Specialists PC16 clinicians in the group
Specialties
- Neurosurgeryprimary
Other neurosurgeons in Connecticut
Clinicians with the same Medicare primary specialty in Connecticut — not a recommendation.
Clinician information
| Medical school | State University Of Ny Upstate Medical University |
|---|---|
| Graduation year | 2017 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1386175701 |
| 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