Marsha Treadwell, PHD
NPI 1851955058 · Health Service Psychologist · Oakland, CA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marsha Treadwell, PHD is a Health Service Psychologist provider in Oakland, CA (NPI 1851955058).
Provider details
- NPI number
- 1851955058
- Entity type
- Individual
- Primary specialty
- Health Service PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Female
- Sole proprietor
- No
- License
- PSY9981 (CA)
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
7 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
- 2019-04-24
- Last updated
- 2019-04-24
Frequently asked questions
- What is Marsha Treadwell's NPI number?
- Marsha Treadwell's National Provider Identifier (NPI) is 1851955058, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marsha Treadwell's specialty?
- Marsha Treadwell is listed in the NPPES registry with a primary specialty of Health Service Psychologist (Behavioral Health & Social Service Providers).
- Where is Marsha Treadwell located?
- Marsha Treadwell's practice location on file with NPPES is 747 52nd St, Oakland, CA 94609-1809.
- What is Marsha Treadwell's phone number?
- The practice phone number listed in the NPPES registry for Marsha Treadwell is (510) 428-3356.
- Does Marsha Treadwell accept Medicare?
- Marsha Treadwell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marsha Treadwell's NPI active?
- Yes — Marsha Treadwell's NPI (1851955058) is active in the NPPES registry as of the last update on 2019-04-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.