Matthew O'Brien, PA-C
NPI 1518725779 · Physician Assistant · Palo Alto, CA
Matthew O'Brien, PA-C is a Physician Assistant provider in Palo Alto, CA (NPI 1518725779).
Provider details
- NPI number
- 1518725779
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
- Physician Assistant363A00000X
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Mailing address
Additional practice locations (1)
- 612 Exeter PlDanville, CA 94506-1264Phone: (925) 413-3104
Registry dates
- Enumerated
- 2024-03-11
- Last updated
- 2024-06-26
- Certified
- 2024-06-26
Frequently asked questions
- What is Matthew O'Brien's NPI number?
- Matthew O'Brien's National Provider Identifier (NPI) is 1518725779, 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 Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Matthew O'Brien located?
- Matthew O'Brien's practice location on file with NPPES is 725 Welch Rd, Palo Alto, CA 94304-1601.
- What is Matthew O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Matthew O'Brien is (650) 497-8000.
- Is Matthew O'Brien's NPI active?
- Yes — Matthew O'Brien's NPI (1518725779) is active in the NPPES registry as of the last update on 2024-06-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.