William L Matzner, MD, PHD - Internal Medicine in Simi Valley, CA

William L Matzner, MD, PHD is a Internal Medicine physician based in Simi Valley, California. William L Matzner is licensed to practice in California (license number AO43053) and his current practice location is 143 Parrot Ln, Simi Valley, California. He can be reached at his office (for appointments etc.) via phone at (805) 578-7000.

NPI number for William L Matzner is 1306905716 and his current mailing address is Po Box 941570, Simi Valley, California. He does not participate in medicare program and thus does not accept medicare assignments. His NPI Number is 1306905716.

Contact Information

William L Matzner, MD, PHD
143 Parrot Ln,
Simi Valley, CA 93065-3151
(805) 578-7000
Not Available

Map and Direction




Physician's Profile

Full NameWilliam L Matzner
GenderMale
SpecialityInternal Medicine
Location143 Parrot Ln, Simi Valley, California
Accepts Medicare AssignmentsDoes not participate in Medicare Program. He may not accept medicare assignment.
  NPI Data:
  • NPI Number: 1306905716
  • Provider Enumeration Date: 12/08/2006
  • Last Update Date: 12/15/2015

Medical Identifiers

Medical identifiers for William L Matzner such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1306905716NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine AO43053 (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. William L Matzner 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
William L Matzner, MD, PHD
Po Box 941570,
Simi Valley, CA 93094-1570

Ph: () -
William L Matzner, MD, PHD
143 Parrot Ln,
Simi Valley, CA 93065-3151

Ph: (805) 578-7000

Reviews and Comments


Internal Medicine Doctors in Simi Valley, CA

Cho May, M.D
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2975 Sycamore Dr, Simi Valley, CA 93065
Phone: 626-944-5144    
Dr. Varol Serdar Togay, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1687 Erringer Rd, Suite 105, Simi Valley, CA 93065
Phone: 805-584-9293    
Dr. Anthony Thong Phan, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1189 Swallow Ln Ste 110, Simi Valley, CA 93065
Phone: 805-526-3213    Fax: 805-583-5929
Qurat-ul-ain Ahmed Rashid, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2975 Sycamore Dr, United Inpatient Consultants, Simi Valley, CA 93065
Phone: 805-522-2500    
Dr. Gurdip Singh Flora, M.D
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1172 Swallow Lane, Simi Valley, CA 93065
Phone: 805-583-4111    Fax: 805-583-2041
Lucia Loredana Dattoma, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2655 1st St Ste 360, Simi Valley, CA 93065
Phone: 805-583-7640    Fax: 805-583-7641
Dr. Melissa Jill Cohen, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2750 Sycamore Dr, 201, Simi Valley, CA 93065
Phone: 805-583-0110    

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.