What is Mary Castro's NPI number?

Mary Castro's National Provider Identifier (NPI) is 1215538442, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mary Castro's specialty?

Mary Castro is listed in the NPPES registry with a primary specialty of Peer Specialist (Other Service Providers).

Where is Mary Castro located?

Mary Castro's practice location on file with NPPES is 8125 S Walker Ave, Oklahoma City, OK 73139-9417.

What is Mary Castro's phone number?

The practice phone number listed in the NPPES registry for Mary Castro is (405) 634-4400.

Is Mary Castro's NPI active?

Yes — Mary Castro's NPI (1215538442) is active in the NPPES registry as of the last update on 2025-06-11.

IndividualActive

Mary Castro, PEER SUPPORT

NPI 1215538442 · Peer Specialist · Oklahoma City, OK

Mary Castro, PEER SUPPORT is a Peer Specialist provider in Oklahoma City, OK (NPI 1215538442).

Provider details

NPI number: 1215538442
Entity type: Individual
Primary specialty: Peer SpecialistOther Service Providers
Credential: PEER SUPPORT
Sex: Female
Sole proprietor: No
License: RBT-20-142816 (OK)

Specialties & taxonomies

Peer SpecialistPrimary175T00000X
Other Service Providers
Behavior Technician106S00000XLicense RBT-20-142816 (OK)
Behavioral Health & Social Service Providers

Profile Score

Established profile(63/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
5 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

8125 S Walker Ave

Oklahoma City, OK 73139-9417

Phone: (405) 634-4400

Street-level locationGet directions

More OK providers

Mailing address

4119 Nw 50th St

Oklahoma City, OK 73112-2246

Enumerated: 2020-11-04
Last updated: 2025-06-11
Certified: 2025-06-11

Frequently asked questions

What is Mary Castro's NPI number?: Mary Castro's National Provider Identifier (NPI) is 1215538442, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Mary Castro's specialty?: Mary Castro is listed in the NPPES registry with a primary specialty of Peer Specialist (Other Service Providers).
Where is Mary Castro located?: Mary Castro's practice location on file with NPPES is 8125 S Walker Ave, Oklahoma City, OK 73139-9417.
What is Mary Castro's phone number?: The practice phone number listed in the NPPES registry for Mary Castro is (405) 634-4400.
Is Mary Castro's NPI active?: Yes — Mary Castro's NPI (1215538442) is active in the NPPES registry as of the last update on 2025-06-11.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.