Nathaniel Pack, PSY.D.
NPI 1437483518 · Clinical Psychologist · Palo Alto, CA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathaniel Pack, PSY.D. is a Clinical Psychologist provider in Palo Alto, CA (NPI 1437483518).
Provider details
- NPI number
- 1437483518
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PSY.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- PSY22991 (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
16 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
285 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 | 109 | $48 |
| Evaluation of Psychological Test, Each Additional Hour96131 | 66 | $98 |
| Evaluation of Psychological Test, First Hour96130 | 54 | $137 |
| Psychiatric Diagnostic Evaluation90791 | 29 | $198 |
| Administration of Psychological Or Neuropsychological Test, First 30 Minutes96136 | 27 | $52 |
Typical Medicare-allowed amounts for these services range $48–$198 (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
- 2009-09-23
- Last updated
- 2014-06-10
Frequently asked questions
- What is Nathaniel Pack's NPI number?
- Nathaniel Pack's National Provider Identifier (NPI) is 1437483518, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathaniel Pack's specialty?
- Nathaniel Pack is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Nathaniel Pack located?
- Nathaniel Pack's practice location on file with NPPES is 117 S California Ave, Palo Alto, CA 94306-5103.
- What is Nathaniel Pack's phone number?
- The practice phone number listed in the NPPES registry for Nathaniel Pack is (415) 847-6960.
- Does Nathaniel Pack accept Medicare?
- Nathaniel Pack is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathaniel Pack's NPI active?
- Yes — Nathaniel Pack's NPI (1437483518) is active in the NPPES registry as of the last update on 2014-06-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.