Leann Arleen Williams, MD
Pediatrics Physician · Ladera Ranch, CA
Leann Arleen Williams, MD is a pediatrics physician with a practice address in Ladera Ranch, California, and NPI 1437451499, issued on Nov 24, 2010. Check the license (California A114783, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Leann Arleen Williams
- Credential
- MD
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- A114783 CA
Self-reported in NPPES; status is on the state search - Practice location
- 600 Corporate Dr Ste 110, Ladera Ranch, CA 92694
- Phone
- (949) 328-1837
- Enumerated
- Nov 24, 2010
- Record last updated
- Mar 27, 2025
- Fax
- (949) 328-1838
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 9,272 in California → Look up another NPI →
Also registered at 600 Corporate Dr Ste 110
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rebekah AcostaBehavior Technician1083305270
- Yaseen AldawoodBehavior Technician1285462341
- Jonathan Antonio HernandezBehavior Technician1083258693
- Maia BaglinBehavior Technician1760021208
- Veronica Bahena MartinezBehavior Technician1124659008
- Zoee BeaverBehavior Analyst1467014027
Verify Leann Arleen Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A114783Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $222.16
10 payments; by number, the most common kind was food and beverage; the largest payer was Corium, LLC. The 21,580 providers of this specialty with any payment received $842.05 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Leann Arleen Williams among 9,272 pediatrics physician records in California
Leann Arleen Williams, MD is one of 9,272 pediatrics physician records with a practice address in California. 31% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 63% of them.
- NPI issued2010 · 63% of these records are older, 34% newer
- In a Medicare fileYes · 31% of these records are
- In the CMS Doctors and Clinicians fileNo · 8% of these records are
- Record last updated2025 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
8 pediatrics physician records list a practice address in Ladera Ranch
They are 8 of the 264 NPPES records with a practice address in Ladera Ranch, and 9,272 pediatrics physician records in California.
All 9,272 in California → Every provider in Ladera Ranch → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Christine Comulada, MDLadera Ranch, CA 926941356481642
- Amy Cox, M.D.Ladera Ranch, CA 926941568567527
- Kenson Lo, M.D.Ladera Ranch, CA 926941245301407
- John Mersch, M.D.Ladera Ranch, CA 926941588769558
- Meena Tanwar-Ahuja, M.D.Ladera Ranch, CA 926941649584426
- Lisa Teschke-Nguyen, M.D.Ladera Ranch, CA 926941538265285
- Trung Truong, MDRancho Mission Viejo, CA 926941801877170
- Clyde Wesp, M.D.Ladera Ranch, CA 926941679679336
Common questions
What is Leann Arleen Williams, MD's NPI number?
Leann Arleen Williams, MD's National Provider Identifier (NPI) is 1437451499, issued on Nov 24, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Leann Arleen Williams, MD located?
The NPPES record lists a practice address at 600 Corporate Dr Ste 110, Ladera Ranch, CA, 92694. Phone: (949) 328-1837. Providers update this record themselves, so call before visiting.
How can I verify Leann Arleen Williams, MD's license?
NPPES lists California license number A114783, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.