William G Keyser, MD - Emergency Medicine in Sonoma, CA

William G Keyser, MD is a Emergency Medicine physician based in Sonoma, California. William G Keyser is licensed to practice in California (license number C32412) and his current practice location is 347 Andrieux Street, Sonoma, California. He can be reached at his office (for appointments etc.) via phone at (707) 935-5100.

NPI number for William G Keyser is 1306859194 and his current mailing address is P.o. Box 10609, Westminster, California. He does not participate in medicare program and thus does not accept medicare assignments. His NPI Number is 1306859194.

Contact Information

William G Keyser, MD
347 Andrieux Street,
Sonoma, CA 95476-6811
(707) 935-5100
Not Available

Map and Direction




Physician's Profile

Full NameWilliam G Keyser
GenderMale
SpecialityEmergency Medicine
Location347 Andrieux Street, Sonoma, California
Accepts Medicare AssignmentsDoes not participate in Medicare Program. He may not accept medicare assignment.
  NPI Data:
  • NPI Number: 1306859194
  • Provider Enumeration Date: 08/14/2006
  • Last Update Date: 07/02/2008

Medical Identifiers

Medical identifiers for William G Keyser such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1306859194NPI-NPPES
00C324120MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine C32412 (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 G Keyser 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 G Keyser, MD
P.o. Box 10609,
Westminster, CA 92685-0609

Ph: (877) 818-6100
William G Keyser, MD
347 Andrieux Street,
Sonoma, CA 95476-6811

Ph: (707) 935-5100

Reviews and Comments


Emergency Medicine Doctors in Sonoma, CA

Dr. Nicolas Sawyer, M.D.
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 347 Andrieux St, Sonoma, CA 95476
Phone: 707-935-5000    
Mark Gorton Wills, MD
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 347 Andrieux Street, Sonoma, CA 95476
Phone: 707-935-5100    
Jay W. Goldberg, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 347 Andrieux Street, Sonoma, CA 95476
Phone: 707-935-5100    
Robert T Petty, DO
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 866 Donner Ave, Sonoma, CA 95476
Phone: 360-708-7940    
Erick S. French, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 347 Andrieux St, Sonoma, CA 95476
Phone: 707-935-5000    Fax: 925-225-5838
D Jasper Schmidt, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 347 Andrieux St, Sonoma, CA 95476
Phone: 707-634-4751    

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.

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