KAREN KELSO WALKER APRN, PMHNP-BC
NPI 1538703392
Nurse Practitioner - Psychiatric/Mental Health in Oviedo, FL

Q: What is Karen Walker's NPI number?

The NPI number for Karen Walker is 1538703392. It was assigned to this individual provider in the NPPES registry on November 4, 2019.

Q: What is Karen Walker's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Q: When was this NPI record last updated?

The NPPES record for Karen Walker was last updated on December 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since November 04, 2019PECOS EnrolledAccepts Medicare Assignment

8400 RED BUG LAKE RD STE 2080, OVIEDO, FL 32765(833) 769-3524(321) 348-9984 Get Directions Write a Review

NPPES record last updated: December 30, 2025. Verified against the NPPES registry weekly; last sync: September 06, 2026.

Record update history: Dec 30, 2025, Oct 29, 2023, Jan 12, 2022 and 1 more (4 updates tracked since 2019).

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About Karen Kelso Walker Aprn, Pmhnp-bc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

KAREN KELSO WALKER APRN, PMHNP-BC (NPI 1538703392) is an individual psychiatric/mental health provider in Oviedo, Florida, licensed in Florida (APRN11016676) and active in the NPI registry since November 2019. She is enrolled in Medicare PECOS and is a graduate of Other (2021).

NPPES Registry Identity

NPI1538703392

Entity TypeIndividualFemale

Primary Taxonomy363LP0808X

Provider Legal NameKAREN KELSO WALKERCredential: APRN, PMHNP-BC

Location Address8400 RED BUG LAKE RD STE 2080Oviedo, FL 32765-6835

Mailing Address8400 Red Bug Lake Rd Ste 2080Oviedo, FL 32765-6835 · (833) 769-3524 · Fax (321) 348-9984

Phone(833) 769-3524

Fax(321) 348-9984

Sole ProprietorNo

Medical School CMSOtherGraduated 2021

Enumeration DateNovember 4, 2019

Last NPPES UpdateDecember 30, 20254 updates tracked since enumeration

NPPES CertifiedDecember 30, 2025

✔ NPI 1538703392 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LP0808X

License✔ Licensed in FL · APRN11016676

Also ListedRegistered NurseTaxonomy 163W00000X · License RN9224976 (FL)

8400 RED BUG LAKE RD STE 2080, Oviedo, FL 32765

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Other Identifiers 1

Medicaid112936800FL

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Florida Blue (BlueCross BlueShield FL), Florida Blue HMO (a BlueCross BlueShield FL company), UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Karen Kelso Walker Aprn, Pmhnp-bc is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5092107045

PECOS Enrollment IDI20220125000296

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 32765 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$87.62 typical visit price

range $56.00 – $171.84

Typical copayment $21.90 (range $14.00 – $42.96)

Most-billed visit code 99203

Established Patient

$99.16 typical visit price

range $17.57 – $139.16

Typical copayment $24.79 (range $4.39 – $34.79)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 16

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

GELISSA BULTRON LMHC

Counselor (Mental Health)