OrganizationActive
Robert J Obrien Jr, MD and Associates PC
NPI 1033563960 · Specialist · Winchester, MA
Robert J Obrien Jr, MD and Associates PC is a Specialist organization in Winchester, MA (NPI 1033563960).
Provider details
- NPI number
- 1033563960
- Entity type
- Organization
- Primary specialty
- SpecialistOther Service Providers
- Organization subpart
- No
- Authorized official
- Donna O'Brien, Office Manager(781) 729-4878
Specialties & taxonomies
Other Service Providers
Profile Score
Established profile(72/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
955 Main St
Suite G6
Winchester, MA 01890-1961
Phone: (781) 729-4878
Street-level locationGet directions
Mailing address
955 Main St
Winchester, MA 01890-1961
Registry dates
- Enumerated
- 2016-04-18
- Last updated
- 2016-04-18
Frequently asked questions
- What is Robert J Obrien Jr, MD and Associates PC's NPI number?
- Robert J Obrien Jr, MD and Associates PC's National Provider Identifier (NPI) is 1033563960, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Robert J Obrien Jr, MD and Associates PC?
- Robert J Obrien Jr, MD and Associates PC is classified in the NPPES registry as Specialist (Other Service Providers).
- Where is Robert J Obrien Jr, MD and Associates PC located?
- Robert J Obrien Jr, MD and Associates PC's practice location on file with NPPES is 955 Main St, Winchester, MA 01890-1961.
- What is Robert J Obrien Jr, MD and Associates PC's phone number?
- The practice phone number listed in the NPPES registry for Robert J Obrien Jr, MD and Associates PC is (781) 729-4878.
- Who is the authorized official for Robert J Obrien Jr, MD and Associates PC?
- The authorized official listed on Robert J Obrien Jr, MD and Associates PC's NPPES record is Donna O'Brien, Office Manager. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Robert J Obrien Jr, MD and Associates PC's NPI active?
- Yes — Robert J Obrien Jr, MD and Associates PC's NPI (1033563960) is active in the NPPES registry as of the last update on 2016-04-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.