Mary Gerrard, PHD
NPI 1538725452 · Clinical Psychologist · Columbia, MD
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Gerrard, PHD is a Clinical Psychologist provider in Columbia, MD (NPI 1538725452).
Provider details
- NPI number
- 1538725452
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Case Manager/Care Coordinator171M00000X
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2019-05-16
- Last updated
- 2025-06-04
- Certified
- 2025-06-04
Frequently asked questions
- What is Mary Gerrard's NPI number?
- Mary Gerrard's National Provider Identifier (NPI) is 1538725452, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Gerrard's specialty?
- Mary Gerrard is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Mary Gerrard located?
- Mary Gerrard's practice location on file with NPPES is 9810 Patuxent Woods Dr Ste F, Columbia, MD 21046-1595.
- What is Mary Gerrard's phone number?
- The practice phone number listed in the NPPES registry for Mary Gerrard is (443) 923-3871.
- Does Mary Gerrard accept Medicare?
- Mary Gerrard is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Gerrard's NPI active?
- Yes — Mary Gerrard's NPI (1538725452) is active in the NPPES registry as of the last update on 2025-06-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.