Karen Walker, APRN, PMHNP-BC
NPI 1538703392 · Psychiatric/Mental Health Nurse Practitioner · Oviedo, FL
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Walker, APRN, PMHNP-BC is a Psychiatric/Mental Health Nurse Practitioner provider in Oviedo, FL (NPI 1538703392).
Provider details
- NPI number
- 1538703392
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN, PMHNP-BC
- Sex
- Female
- Sole proprietor
- No
- License
- APRN11016676 (FL)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
6 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$115 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-11-04
- Last updated
- 2025-12-30
- Certified
- 2025-12-30
Frequently asked questions
- What is Karen Walker's NPI number?
- Karen Walker's National Provider Identifier (NPI) is 1538703392, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Walker's specialty?
- Karen Walker is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karen Walker located?
- Karen Walker's practice location on file with NPPES is 8400 Red Bug Lake Rd Ste 2080, Oviedo, FL 32765-6835.
- What is Karen Walker's phone number?
- The practice phone number listed in the NPPES registry for Karen Walker is (833) 769-3524.
- Does Karen Walker accept Medicare?
- Karen Walker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Walker's NPI active?
- Yes — Karen Walker's NPI (1538703392) is active in the NPPES registry as of the last update on 2025-12-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.