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KRISTEN IVERS WILLIAMS LCSW
NPI 1265775589
Social Worker - Clinical in Irvine, CA

Active since April 04, 2013PECOS EnrolledAccepts Medicare Assignment
19742 MACARTHUR BLVD STE 100, IRVINE, CA 92612(714) 646-8034(714) 492-8264 Get Directions Write a Review

NPPES record last updated: October 19, 2023. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Kristen Ivers Williams Lcsw NPPES

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

KRISTEN IVERS WILLIAMS LCSW (NPI 1265775589) is an individual clinical provider in Irvine, California, licensed in California (LCSW22291) and active in the NPI registry since April 2013. She is enrolled in Medicare PECOS and is a graduate of Other (2000).

NPPES Registry Identity

NPI1265775589
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameKRISTEN IVERS WILLIAMSCredential: LCSW
Location Address19742 MACARTHUR BLVD STE 100Irvine, CA 92612-2408
Mailing Address18200 Yorba Linda Blvd Ste 111Yorba Linda, CA 92886-4043
Phone(714) 646-8034
Fax(714) 492-8264
Sole ProprietorYes
Medical School CMSOtherGraduated 2000
Enumeration DateApril 4, 2013
Last NPPES UpdateOctober 19, 2023
NPPES CertifiedFebruary 22, 2021
✔ NPI 1265775589 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
Licenses✔ Licensed in CA · LCSW22291✔ Licensed in CA · LCS22291
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
19742 MACARTHUR BLVD STE 100, Irvine, CA 92612
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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 and accepts Medicare assignment

Kristen Ivers Williams Lcsw 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 ID547616278
PECOS Enrollment IDI20231031003531
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 92612 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
$0.00 typical visit price
range $62.96 – $187.60
Typical copayment $0.00 (range $15.74 – $46.90)
Most-billed visit code NA
Established Patient
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
Most-billed visit code 99213
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 8

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

KIEU BALTHASAR LCSW
Social Worker (Clinical)
19742 MACARTHUR BLVD STE 100
IRVINE, CA 92612
Orange County (714) 646-8034
WESTERN PULMONARY MEDICAL GROUP INC
Internal Medicine (Pulmonary Disease)
19742 MACARTHUR BLVD STE 100
IRVINE, CA 92612
Orange County (949) 428-0330
MRS. HEIDI NANETTE HEADDING LMFT
Marriage & Family Therapist
19742 MACARTHUR BLVD STE 100
IRVINE, CA 92612
Orange County (714) 646-8034
CATHERINE ANN THIELEN PSYD
Psychologist (Clinical)
19742 MACARTHUR BLVD STE 100
IRVINE, CA 92612
Orange County (714) 646-8034
STEPHANIE RIVERA FNP
Nurse Practitioner (Family)
19742 MACARTHUR BLVD STE 100
IRVINE, CA 92612
Orange County (949) 428-0330
MR. MATTHEW AARON FLEISCHMAN M.A., LMFT
Marriage & Family Therapist
19742 MACARTHUR BLVD STE 100
IRVINE, CA 92612
Orange County (714) 646-8034
KIMBERLY AHLUWALIA DECHELLIS LMFT
Marriage & Family Therapist
19742 MACARTHUR BLVD STE 100
IRVINE, CA 92612
Orange County (714) 646-8034
MRS. JESSICA KATHERYN BONETTE
Marriage & Family Therapist
19742 MACARTHUR BLVD STE 100
IRVINE, CA 92612
Orange County (714) 646-8034

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Kristen Williams's NPI number?

The NPI number for Kristen Williams is 1265775589. It was assigned to this individual provider in the NPPES registry on April 4, 2013.

Where is Kristen Williams located?

Kristen Williams practices at 19742 Macarthur Blvd Ste 100, Irvine, CA 92612. The listed phone number is (714) 646-8034.

What is Kristen Williams's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Is Kristen Williams enrolled in Medicare?

Yes. Kristen Williams is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Kristen Williams was last updated on October 19, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.