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Matthew O Brien, MD
NPI 1972551430 · Internal Medicine Physician · Buffalo, NY
Matthew O Brien, MD is a Internal Medicine Physician provider in Buffalo, NY (NPI 1972551430).
Provider details
- NPI number
- 1972551430
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 141215-1 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
85 High St
Buffalo, NY 14203-1149
Phone: (716) 857-8616
Fax: (716) 250-5945
Street-level locationGet directions
Mailing address
6255 Sheridan Dr
Williamsville, NY 14221-4836
Registry dates
- Enumerated
- 2006-05-05
- Last updated
- 2008-04-14
Frequently asked questions
- What is Matthew O Brien's NPI number?
- Matthew O Brien's National Provider Identifier (NPI) is 1972551430, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew O Brien's specialty?
- Matthew O Brien is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew O Brien located?
- Matthew O Brien's practice location on file with NPPES is 85 High St, Buffalo, NY 14203-1149.
- What is Matthew O Brien's phone number?
- The practice phone number listed in the NPPES registry for Matthew O Brien is (716) 857-8616.
- Is Matthew O Brien's NPI active?
- Yes — Matthew O Brien's NPI (1972551430) is active in the NPPES registry as of the last update on 2008-04-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.