Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

KAREN REBECCA MULLEN FNP-BC
NPI 1821861717
Nurse Practitioner - Family in Indianapolis, IN

Q: What is Karen Mullen's NPI number?

The NPI number for Karen Mullen is 1821861717. It was assigned to this individual provider in the NPPES registry on November 1, 2023.

Q: What is Karen Mullen's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Q: When was this NPI record last updated?

The NPPES record for Karen Mullen was last updated on September 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 35 days 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 01, 2023PECOS Enrolled

8455 KEYSTONE XING STE 300, INDIANAPOLIS, IN 46240(317) 941-7338 Get Directions Write a Review

NPPES record last updated: September 23, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 23, 2026, Aug 25, 2026, Nov 3, 2023 (3 updates tracked since 2023).

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About Karen Rebecca Mullen Fnp-bc NPPES

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

KAREN REBECCA MULLEN FNP-BC (NPI 1821861717) is an individual family provider in Indianapolis, Indiana, licensed in Indiana (71018707A) and active in the NPI registry since November 2023. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1821861717

Entity TypeIndividualFemale

Primary Taxonomy363LF0000X

Provider Legal NameKAREN REBECCA MULLENCredential: FNP-BC

Location Address8455 KEYSTONE XING STE 300Indianapolis, IN 46240-4353

Mailing Address400 E South StWinchester, IN 47394-2232

Phone(317) 941-7338

Sole ProprietorNo

Enumeration DateNovember 1, 2023

Last NPPES UpdateSeptember 23, 20263 updates tracked since enumeration

NPPES CertifiedSeptember 23, 2026

✔ NPI 1821861717 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LF0000X

License✔ Licensed in IN · 71018707A

8455 KEYSTONE XING STE 300, Indianapolis, IN 46240

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Karen Rebecca Mullen Fnp-bc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 46240 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

$82.04 typical visit price

range $53.07 – $161.76

Typical copayment $20.51 (range $13.26 – $40.44)

Most-billed visit code 99203

Established Patient

$94.22 typical visit price

range $16.93 – $132.22

Typical copayment $23.55 (range $4.23 – $33.05)

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 10

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

MADISYN TWITTY

Nurse Practitioner (Family)