Quick answers
- Which hospitals does Douglas A. Obrien work at?
- Medicare's official clinician data lists Douglas A. Obrien at 2 hospitals: St Vincent Hospital and UMass Memorial Health - Harrington Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Douglas A. Obrien see patients?
- Medicare's clinician data lists 1 practice location in Worcester, MA. Call before your visit to confirm the address.
- What is Douglas A. Obrien's specialty?
- Medicare lists Otolaryngology as the primary specialty.
- Does Douglas A. Obrien accept Medicare assignment?
- Yes. Medicare's clinician data says Douglas A. 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 Douglas A. Obrien?
- (508) 757-0330, as listed in official Medicare / NPI Registry data.
- What is Douglas A. Obrien's NPI number?
- 1245298629. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Douglas A. Obrien works
Medicare's Facility Affiliation Data lists Douglas A. Obrien at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- St Vincent HospitalWorcester, MA · Acute Care Hospital · CCN 220176
- UMass Memorial Health - Harrington HospitalSouthbridge, MA · Acute Care Hospital · CCN 220019
Practice locations
Addresses where Douglas A. Obrien is enrolled with Medicare (CMS data updated 2026-10-02).
- 100 Mlk Jr Blvd, Suite 4Worcester, MA 01608 (508) 757‑0330
Group practices
Medicare enrollment lists Douglas A. Obrien as a member of this group (CMS data updated 2026-10-02).
- Associates in Otolaryngology Head and Neck Surgery, PC9 clinicians in the group
Specialties
- Otolaryngologyprimary
Other ENT doctors in Worcester
Clinicians with the same Medicare primary specialty in Worcester, MA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Perelman School Of Med At The University Of Pennsylvania |
| Graduation year | 1996 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1245298629 |
| 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