KARLYN WILLIAMS MD
NPI 1639812431
Pediatrics in Prescott, AZ

Q: What is Karlyn Williams's NPI number?

The NPI number for Karlyn Williams is 1639812431. It was assigned to this individual provider in the NPPES registry on April 19, 2022.

Q: What is Karlyn Williams's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Q: When was this NPI record last updated?

The NPPES record for Karlyn Williams was last updated on May 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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 April 19, 2022PECOS Enrolled

2120 CENTERPOINTE WEST DR, PRESCOTT, AZ 86301(928) 778-4581(928) 776-1872 Get Directions Write a Review

NPPES record last updated: May 6, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 6, 2026, Apr 19, 2022 (2 updates tracked since 2022).

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About Karlyn Williams Md NPPES

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

KARLYN WILLIAMS MD (NPI 1639812431) is an individual pediatrics provider in Prescott, Arizona, licensed in Arizona (77683) and active in the NPI registry since April 2022. She is enrolled in Medicare PECOS, maintains a secondary practice location in Phoenix, and is a graduate of University Of Texas Medical School At San Antonio (2022).

NPPES Registry Identity

NPI1639812431

Entity TypeIndividualFemale

Primary Taxonomy208000000X

Provider Legal NameKARLYN WILLIAMSCredential: MD

Location Address2120 CENTERPOINTE WEST DRPrescott, AZ 86301-8487

Mailing Address1601 E Highland Ave Apt 1092Phoenix, AZ 85016-4682

Phone(928) 778-4581

Fax(928) 776-1872

Sole ProprietorNo

Medical School CMSUniversity Of Texas Medical School At San AntonioGraduated 2022

Enumeration DateApril 19, 2022

Last NPPES UpdateMay 6, 20262 updates tracked since enumeration

NPPES CertifiedMay 6, 2026

✔ NPI 1639812431 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

License✔ Licensed in AZ · 77683

Definition

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

2120 CENTERPOINTE WEST DR, Prescott, AZ 86301

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Secondary Practice Location 1

Location 11919 E Thomas RdPhoenix, AZ 85016-7710 · Phone (602) 933-0945

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Karlyn Williams Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID2769951656

PECOS Enrollment IDI20260520002523

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.

Medicare Billing Reassignment

Medicare enrollment records show Karlyn Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Yavapai Regional Medical Center Physician Care LLC

3.5 mi

Cardiovascular Disease

3120 CLEARWATER DR
Prescott, AZ 86305

Reassigned Medicare billing, Arizona enrollment
138 clinicians in this Medicare group

NPI 1255582003 (928) 771-2400

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 86301 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

$85.89 typical visit price

range $55.44 – $168.60

Typical copayment $21.47 (range $13.86 – $42.15)

Most-billed visit code 99203

Established Patient

$98.00 typical visit price

range $17.72 – $137.41

Typical copayment $24.50 (range $4.43 – $34.35)

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 9

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

KETURAH LEGLER CPNP

Nurse Practitioner