Dr Katherine Danielle Williamson, MD - Pediatrics in Lake Forest, CA

Dr Katherine Danielle Williamson, MD is a Pediatrics physician based in Lake Forest, California. Dr Katherine Danielle Williamson is licensed to practice in California (license number A112985) and her current practice location is 23321 El Toro Rd, Suite F, Lake Forest, California. She can be reached at her office (for appointments etc.) via phone at (949) 388-1798.

NPI number for Dr Katherine Danielle Williamson is 1982916375 and her current mailing address is 23321 El Toro Rd, Suite F, Lake Forest, California. She does not participate in medicare program and thus does not accept medicare assignments. Her NPI Number is 1982916375.

Contact Information

Dr Katherine Danielle Williamson, MD
23321 El Toro Rd, Suite F,
Lake Forest, CA 92630-4825
(949) 388-1798
Not Available

Map and Direction




Physician's Profile

Full NameDr Katherine Danielle Williamson
GenderFemale
SpecialityPediatrics
Location23321 El Toro Rd, Lake Forest, California
Accepts Medicare AssignmentsDoes not participate in Medicare Program. She may not accept medicare assignment.
  NPI Data:
  • NPI Number: 1982916375
  • Provider Enumeration Date: 07/14/2010
  • Last Update Date: 01/17/2017

Medical Identifiers

Medical identifiers for Dr Katherine Danielle Williamson such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1982916375NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208000000XPediatrics A112985 (California)Primary

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Katherine Danielle Williamson is NOT enrolled with medicare and thus cannot prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Katherine Danielle Williamson, MD
23321 El Toro Rd, Suite F,
Lake Forest, CA 92630-4825

Ph: (949) 388-1798
Dr Katherine Danielle Williamson, MD
23321 El Toro Rd, Suite F,
Lake Forest, CA 92630-4825

Ph: (949) 388-1798

Reviews and Comments


Pediatrics Doctors in Lake Forest, CA

Dr. Stephanie Lee, MD, MPH
Pediatrics
Medicare: Medicare Enrolled
Practice Location: 21 Orchard, Lake Forest, CA 92630
Phone: 949-694-5700    
Eric Howard Ball, M.D.
Pediatrics
Medicare: Not Enrolled in Medicare
Practice Location: 23321 El Toro Road, Suites F&g, Lake Forest, CA 92630
Phone: 949-770-6789    Fax: 949-829-9125
James Su, MD
Pediatrics
Medicare: Not Enrolled in Medicare
Practice Location: 23321 El Toro Rd Ste F&g, Lake Forest, CA 92630
Phone: 949-770-0513    
Terence Chu, M.D.
Pediatrics
Medicare: Not Enrolled in Medicare
Practice Location: 23321 El Toro Rd, Suites F&g, Lake Forest, CA 92630
Phone: 949-770-0513    
Regina Brown, M.D.
Pediatrics
Medicare: Not Enrolled in Medicare
Practice Location: 23321 El Toro Rd, Suites F&g, Lake Forest, CA 92630
Phone: 949-770-0513    
Dr. James Leon Kay, D.O.
Pediatrics
Medicare: Not Enrolled in Medicare
Practice Location: 24432 Muirlands Blvd, Suite 111, Lake Forest, CA 92630
Phone: 949-364-2229    Fax: 949-364-1104

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.