Mary O'Halloran, LP
NPI 1477123511 · Psychologist · Longmont, CO
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary O'Halloran, LP is a Psychologist provider in Longmont, CO (NPI 1477123511).
Provider details
- NPI number
- 1477123511
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- LP
- Sex
- Female
- Sole proprietor
- Yes
- License
- 2218 (CO)
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
4 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
- 2021-06-30
- Last updated
- 2021-09-20
- Certified
- 2021-09-20
Frequently asked questions
- What is Mary O'Halloran's NPI number?
- Mary O'Halloran's National Provider Identifier (NPI) is 1477123511, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary O'Halloran's specialty?
- Mary O'Halloran is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Mary O'Halloran located?
- Mary O'Halloran's practice location on file with NPPES is 1751 Hover St, Longmont, CO 80501-7181.
- What is Mary O'Halloran's phone number?
- The practice phone number listed in the NPPES registry for Mary O'Halloran is (720) 635-0755.
- Does Mary O'Halloran accept Medicare?
- Mary O'Halloran is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary O'Halloran's NPI active?
- Yes — Mary O'Halloran's NPI (1477123511) is active in the NPPES registry as of the last update on 2021-09-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.