Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1437451499 Individual Practitioner Female Practitioner

Dr. Leann Arleen Williams , MD

Pediatrics • Ladera Ranch, CA

Professional Overview & Biography Verified Profile Summary

Dr. Leann Williams, MD is a registered healthcare professional specializing in Pediatrics in Ladera Ranch, CA. Practice services are available at 600 CORPORATE DR STE 110 under active NPI credentials.

Practice Location & Contact Primary Location

Practice Address

600 Corporate Dr Ste 110

Ladera Ranch, CA 926942107

Telephone 9493281837
Fax 9493281838

Specialty Benchmarks & Practice Insights

Comparative analytics for Pediatrics in Ladera Ranch, CA

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 10.5 Yrs
State Avg: 22.5 Yrs
Regional Practice Density
8 Specialists

Practicing in Ladera Ranch, CA (9612 Statewide)

Telehealth Adoption Rate
0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Medical Specialties & State Licenses

CMS Verified: 2025-03-27
Pediatrics Primary Specialty

NUCC Taxonomy Code: 208000000X

State License CA A114783

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.

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

40 Associated Practitioners
Trent Etter

Behavior Technician

NPI 1013790229
Valia Oliva

Behavior Technician

NPI 1033713789
Christine Holder

Behavior Technician

NPI 1073266706
Saray Sanchez

Behavior Technician

NPI 1073332433
Jonathan Antonio Hernandez

Behavior Technician

NPI 1083258693
Rebekah Acosta

Behavior Technician

NPI 1083305270

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

12 Historical Events
📍
Updated Practice Location March 27, 2025

Registered at 600 CORPORATE DR STE 110, LADERA RANCH, CA 926942107 (Tel: 9493281837)

📍
Updated Business Mailing Address March 27, 2025

Registered at 600 CORPORATE DR STE 110, LADERA RANCH, CA 926942107 (Tel: 9493281837)

📍
Updated Practice Location September 26, 2024

Registered at 333 CORPORATE DR STE 200, LADERA RANCH, CA 926942179 (Tel: 9493477200)

📍
Updated Business Mailing Address September 26, 2024

Registered at 333 CORPORATE DR STE 200, LADERA RANCH, CA 926942179 (Tel: 9493477200)

👤
Provider Name / Credentials Updated September 26, 2024

Recorded as LEANN WILLIAMS, MD

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) September 26, 2024

Pediatrics (License #A114783 in CA)

NPI Profile Active August 13, 2012

NPI status registered as active in NPPES database

📍
Updated Practice Location August 13, 2012

Registered at 325 E BASELINE RD, PHOENIX, AZ 850426510 (Tel: 6028244228)

📍
Updated Business Mailing Address August 13, 2012

Registered at 7720 N 16TH ST, SUITE 425, PHOENIX, AZ 850204492 (Tel: 6024760800)

👤
Provider Name / Credentials Updated August 13, 2012

Recorded as LEANN OLSON, MD

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) August 13, 2012

Pediatrics (License #46402 in AZ)

🟢
Initial NPI Registration & Enumeration November 24, 2010

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1437451499
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: November 24, 2010
Last Update: March 27, 2025
Sole Proprietor: No

Mailing Address

600 Corporate Dr Ste 110

Ladera Ranch, CA 926942107

Phone: 9493281837

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.