Dr William Ezial Berger, MD - Medicare in Mission Viejo, CA

Dr William Ezial Berger, MD is a medicare enrolled "Allergy & Immunology - Allergy" physician in Mission Viejo, California. His current practice location is 27800 Medical Center Rd, Suite 244, Mission Viejo, California. You can reach out to his office (for appointments etc.) via phone at (949) 364-2900.

Dr William Ezial Berger is licensed to practice in California (license number C35918) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1538260583.

Contact Information

Dr William Ezial Berger, MD
27800 Medical Center Rd, Suite 244,
Mission Viejo, CA 92691-6410
(949) 364-2900
(949) 365-0117

Map and Direction




Physician's Profile

Full NameDr William Ezial Berger
GenderMale
Speciality
Experience Years
Location27800 Medical Center Rd, Mission Viejo, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr William Ezial Berger attended and graduated from in
  NPI Data:
  • NPI Number: 1538260583
  • Provider Enumeration Date: 09/25/2006
  • Last Update Date: 07/08/2007
  Medicare PECOS Information:
  • PECOS PAC ID:
  • Enrollment ID:

Medical Identifiers

Medical identifiers for Dr William Ezial Berger such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1538260583NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207KA0200XAllergy & Immunology - Allergy C35918 (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 William Ezial Berger is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr William Ezial Berger, MD
27800 Medical Center Rd, Suite 244,
Mission Viejo, CA 92691-6410

Ph: (949) 364-2900
Dr William Ezial Berger, MD
27800 Medical Center Rd, Suite 244,
Mission Viejo, CA 92691-6410

Ph: (949) 364-2900

Reviews and Comments


Allergy & Immunology Doctors in Mission Viejo, CA

Mr. Mark Steven Sugar, M.D.
Allergy & Immunology
Medicare: Accepting Medicare Assignments
Practice Location: 27800 Medical Center Road, Suite 244, Mission Viejo, CA 92691
Phone: 714-662-0313    Fax: 714-662-0353
Warner W Carr, MD
Allergy & Immunology
Medicare: Accepting Medicare Assignments
Practice Location: 27800 Medical Center Rd, Suite 244, Mission Viejo, CA 92691
Phone: 949-364-2900    
Dr. Vinay Mehta, M.D.
Allergy & Immunology
Medicare: Accepting Medicare Assignments
Practice Location: 27800 Medical Center Rd Ste 244, Mission Viejo, CA 92691
Phone: 949-364-2900    Fax: 949-365-0117
Dr. Janet Bonnie Kim, M.D.
Allergy & Immunology
Medicare: May Accept Medicare Assignments
Practice Location: 26302 La Paz Rd #106, Ste 106, Mission Viejo, CA 92691
Phone: 949-328-9972    Fax: 949-328-9976
Dr. Geeta Venkat, M.D.
Allergy & Immunology
Medicare: Accepting Medicare Assignments
Practice Location: 26726 Crown Valley Pkwy, Suite 200, Mission Viejo, CA 92691
Phone: 949-364-4361    Fax: 949-364-4495
Duke D Kim, MD
Allergy & Immunology
Medicare: Accepting Medicare Assignments
Practice Location: 26302 La Paz Rd, Mission Viejo, CA 92691
Phone: 949-328-9972    Fax: 949-328-9976

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.