Mary O'Brien, L.P.C.
NPI 1194874909 · Professional Counselor · Saint Louis, MO
Mary O'Brien, L.P.C. is a Professional Counselor provider in Saint Louis, MO (NPI 1194874909).
Provider details
- NPI number
- 1194874909
- Entity type
- Individual
- Primary specialty
- Professional CounselorBehavioral Health & Social Service Providers
- Credential
- L.P.C.
- Sex
- Female
- Sole proprietor
- No
- License
- 2003032103 (MO)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2007-01-10
- 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 1194874909, 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 Professional Counselor (Behavioral Health & Social Service Providers).
- Where is Mary O'Brien located?
- Mary O'Brien's practice location on file with NPPES is 9378 Olive Blvd, Saint Louis, MO 63132-3215.
- What is Mary O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Mary O'Brien is (314) 994-9344.
- Is Mary O'Brien's NPI active?
- Yes — Mary O'Brien's NPI (1194874909) 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.