Sarah Clark, PHD
NPI 1356026470 · Clinical Neuropsychologist · Mill Valley, CA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sarah Clark, PHD is a Clinical Neuropsychologist provider in Mill Valley, CA (NPI 1356026470).
Provider details
- NPI number
- 1356026470
- Entity type
- Individual
- Primary specialty
- Clinical NeuropsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Female
- Sole proprietor
- No
- License
- PSY34115 (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 tenure28% of score
3 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,926 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Administration of Psychological Or Neuropsychological Test, Each Additional 30 Minutes96137 | 792 | $47 |
| Evaluation of Neuropsychological Test, Each Additional Hour96133 | 684 | $113 |
| Psychiatric Diagnostic Evaluation90791 | 114 | $195 |
| Evaluation of Neuropsychological Test, First Hour96132 | 114 | $148 |
| Administration of Psychological Or Neuropsychological Test, First 30 Minutes96136 | 114 | $51 |
| Psychotherapy, 1 Hour90837 | 108 | $148 |
Typical Medicare-allowed amounts for these services range $47–$195 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2023-06-16
- Last updated
- 2023-06-16
- Certified
- 2023-06-05
Frequently asked questions
- What is Sarah Clark's NPI number?
- Sarah Clark's National Provider Identifier (NPI) is 1356026470, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sarah Clark's specialty?
- Sarah Clark is listed in the NPPES registry with a primary specialty of Clinical Neuropsychologist (Behavioral Health & Social Service Providers).
- Where is Sarah Clark located?
- Sarah Clark's practice location on file with NPPES is 100 Shoreline Highway, Mill Valley, CA 94941.
- What is Sarah Clark's phone number?
- The practice phone number listed in the NPPES registry for Sarah Clark is (415) 877-4408.
- Does Sarah Clark accept Medicare?
- Sarah Clark is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sarah Clark's NPI active?
- Yes — Sarah Clark's NPI (1356026470) is active in the NPPES registry as of the last update on 2023-06-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.