Penelope Zeifert, PHD
NPI 1093841611 · Clinical Neuropsychologist · Stanford, CA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Penelope Zeifert, PHD is a Clinical Neuropsychologist provider in Stanford, CA (NPI 1093841611).
Provider details
- NPI number
- 1093841611
- Entity type
- Individual
- Primary specialty
- Clinical NeuropsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Female
- Sole proprietor
- No
- License
- PSY12493 (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
19 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
282 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 By Technician, Each Additional 30 Minutes96139 | 128 | $49 |
| Evaluation of Neuropsychological Test, Each Additional Hour96133 | 67 | $83 |
| Exam of Neurobehavioral Status, First Hour96116 | 31 | $88 |
| Evaluation of Neuropsychological Test, First Hour96132 | 30 | $116 |
| Administration of Psychological Or Neuropsychological Test By Technician, First 30 Minutes96138 | 26 | $48 |
Typical Medicare-allowed amounts for these services range $48–$116 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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
- 2007-02-26
- Last updated
- 2023-07-06
- Certified
- 2023-07-06
Frequently asked questions
- What is Penelope Zeifert's NPI number?
- Penelope Zeifert's National Provider Identifier (NPI) is 1093841611, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Penelope Zeifert's specialty?
- Penelope Zeifert is listed in the NPPES registry with a primary specialty of Clinical Neuropsychologist (Behavioral Health & Social Service Providers).
- Where is Penelope Zeifert located?
- Penelope Zeifert's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Penelope Zeifert's phone number?
- The practice phone number listed in the NPPES registry for Penelope Zeifert is (650) 498-7875.
- Does Penelope Zeifert accept Medicare?
- Penelope Zeifert is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Penelope Zeifert's NPI active?
- Yes — Penelope Zeifert's NPI (1093841611) is active in the NPPES registry as of the last update on 2023-07-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.