Karen Allen, PHD
NPI 1588964969 · Clinical Psychologist · Fountain Valley, CA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Allen, PHD is a Clinical Psychologist provider in Fountain Valley, CA (NPI 1588964969).
Provider details
- NPI number
- 1588964969
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Female
- Sole proprietor
- No
- License
- PSB 35554 (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
15 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
654 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) |
|---|---|---|
| Psychotherapy, 1 Hour90837 | 625 | $159 |
| Psychiatric Diagnostic Evaluation90791 | 29 | $181 |
Typical Medicare-allowed amounts for these services range $159–$181 (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
- 2010-11-01
- Last updated
- 2010-11-01
Frequently asked questions
- What is Karen Allen's NPI number?
- Karen Allen's National Provider Identifier (NPI) is 1588964969, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Allen's specialty?
- Karen Allen is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Karen Allen located?
- Karen Allen's practice location on file with NPPES is 10101 Slater Ave, Fountain Valley, CA 92708-4714.
- What is Karen Allen's phone number?
- The practice phone number listed in the NPPES registry for Karen Allen is (714) 963-5023.
- Does Karen Allen accept Medicare?
- Karen Allen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Allen's NPI active?
- Yes — Karen Allen's NPI (1588964969) is active in the NPPES registry as of the last update on 2010-11-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.