Leann Arleen Williams, MD

Primary specialty

Pediatrics PhysicianTaxonomy code 208000000X

License

A114783 Issued in CA

Practice address

600 Corporate Dr Ste 110
Ladera Ranch, CA 92694-2107

Phone

(949) 328-1837

Fax

(949) 328-1838

NPI assigned

Nov 24, 2010

Last updated

Mar 27, 2025By the provider in NPPES

Sex

Female

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Other names 1

• Leann Arleen Olson Former name

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Coastal Kids, a Professional Medical Corporation

  dba Coastal Kids

  • Pediatrics Physician
  • Newport Beach, CA
  • NPI 1740311737
  NPD (past)
• Ocean Pediatrics

  • Pediatrics Physician
  • Costa Mesa, CA
  • NPI 1306699814
  NPD (past)
• Banner Pediatric Specialists LLC

  • Multi-Specialty Clinic/Center
  • Mesa, AZ
  • NPI 1639323447
  NPD (past)
• Good Night Pediatrics East Valley PC

  • Urgent Care Clinic/Center
  • Peoria, AZ
  • NPI 1760643555
  NPD (past)

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1290556800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1743033600000",
    "number": "1437451499",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "600 CORPORATE DR STE 110",
            "city": "LADERA RANCH",
            "state": "CA",
            "postal_code": "926942107",
            "telephone_number": "949-328-1837",
            "fax_number": "949-328-1838"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "600 CORPORATE DR STE 110",
            "city": "LADERA RANCH",
            "state": "CA",
            "postal_code": "926942107",
            "telephone_number": "949-328-1837",
            "fax_number": "949-328-1838"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WILLIAMS",
        "first_name": "LEANN",
        "middle_name": "ARLEEN",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2010-11-24",
        "last_updated": "2025-03-27",
        "certification_date": "2025-03-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "CA",
            "license": "A114783",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "LEANN",
            "last_name": "OLSON",
            "middle_name": "ARLEEN",
            "credential": "MD",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Stephanie Ann Watson
• Clyde Wesp Jr., M.D.
• West Coast Wellness LLC
• Jacinda Wilcox, PHARMD
• Williams & Cole Personal Injury Chiropractic, Apc
• Nicholas Williams
• Brittney Winn
• Jane Won, DACCHM, L.AC.
• Brandon Wong, RPH
• Jason Matt Woodrum, LCSW

• Pediatrics Physician in Ladera Ranch, CA
• Providers in Ladera Ranch, CA by specialty
• Pediatrics Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 27, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.