IndividualActive
Mary O'Brien, MD
NPI 1952317927 · Family Medicine Physician · Tacoma, WA
Mary O'Brien, MD is a Family Medicine Physician provider in Tacoma, WA (NPI 1952317927).
Provider details
- NPI number
- 1952317927
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD00029537 (WA)
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
19 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
315 Martin Luther King Jr Way
Tacoma, WA 98405-4234
Phone: (253) 403-1000
Street-level locationGet directions
Mailing address
Po Box 5299
Tacoma, WA 98415-0299
Registry dates
- Enumerated
- 2006-07-31
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mary O'Brien's NPI number?
- Mary O'Brien's National Provider Identifier (NPI) is 1952317927, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary O'Brien's specialty?
- Mary O'Brien is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mary O'Brien located?
- Mary O'Brien's practice location on file with NPPES is 315 Martin Luther King Jr Way, Tacoma, WA 98405-4234.
- What is Mary O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Mary O'Brien is (253) 403-1000.
- Is Mary O'Brien's NPI active?
- Yes — Mary O'Brien's NPI (1952317927) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.