Johanna Walthall, PH.D.
NPI 1750604583 · Clinical Psychologist · Costa Mesa, CA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Johanna Walthall, PH.D. is a Clinical Psychologist provider in Costa Mesa, CA (NPI 1750604583).
Provider details
- NPI number
- 1750604583
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- PSY21948 (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
16 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
- 2010-03-08
- Last updated
- 2021-12-06
- Certified
- 2021-12-06
Frequently asked questions
- What is Johanna Walthall's NPI number?
- Johanna Walthall's National Provider Identifier (NPI) is 1750604583, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Johanna Walthall's specialty?
- Johanna Walthall is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Johanna Walthall located?
- Johanna Walthall's practice location on file with NPPES is 180 Cabrillo St Apt B19, Costa Mesa, CA 92627-3051.
- What is Johanna Walthall's phone number?
- The practice phone number listed in the NPPES registry for Johanna Walthall is (562) 234-7568.
- Does Johanna Walthall accept Medicare?
- Johanna Walthall is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Johanna Walthall's NPI active?
- Yes — Johanna Walthall's NPI (1750604583) is active in the NPPES registry as of the last update on 2021-12-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.