Dr William Garin Wood, MD, MS - Medicare General Surgery in Castro Valley, CA

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Dr William Garin Wood, MD, MS is a medicare enrolled "Surgery" physician in Castro Valley, California. He went to University Of California, San Francisco School Of Medicine and graduated in 2010 and has 16 years of diverse experience with area of expertise as General Surgery. He is a member of the group practice Trauma And Acute Care Surgery Specialists Inc and his current practice location is 19845 Lake Chabot Rd Ste 200, Castro Valley, California. You can reach out to his office (for appointments etc.) via phone at (510) 538-5500.

Dr William Garin Wood is licensed to practice in California (license number A119594) 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 1821309022.

Contact Information

Dr William Garin Wood, MD, MS
19845 Lake Chabot Rd Ste 200,
Castro Valley, CA 94546-4055
(510) 538-5500
(510) 538-5505

Map and Direction




Physician's Profile

Full NameDr William Garin Wood
GenderMale
SpecialityGeneral Surgery
Experience16 Years
Location19845 Lake Chabot Rd Ste 200, Castro Valley, 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 Garin Wood attended and graduated from University Of California, San Francisco School Of Medicine in 2010
  NPI Data:
  • NPI Number: 1821309022
  • Provider Enumeration Date: 06/23/2010
  • Last Update Date: 02/12/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 0547548562
  • Enrollment ID: I20170926002591

Medical Identifiers

Medical identifiers for Dr William Garin Wood such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1821309022NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208600000XSurgery A119594 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Eden Medical CenterCastro valley, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Trauma And Acute Care Surgery Specialists Inc69012415042

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr William Garin Wood allows following entities to bill medicare on his behalf.
Entity NameSutter Bay Medical Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1013950807
PECOS PAC ID: 4284538778
Enrollment ID: O20031125000909
Entity NameWashington Township Medical Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1346557014
PECOS PAC ID: 2860687050
Enrollment ID: O20101112001225
Entity NameTrauma And Acute Care Surgery Specialists Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1639930647
PECOS PAC ID: 6901241504
Enrollment ID: O20240305000782

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 Garin Wood 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 Garin Wood, MD, MS
2601 Blanding Ave, Ste C #165,
Alameda, CA 94501

Ph: (510) 538-5500		Dr William Garin Wood, MD, MS
19845 Lake Chabot Rd Ste 200,
Castro Valley, CA 94546-4055

Ph: (510) 538-5500

Reviews and Comments


Surgery Doctors in Castro Valley, CA

Dr. Yoshitsugu Teramoto, MD
Surgery
Medicare: Not Enrolled in Medicare
Practice Location: 20283 Santa Maria Ave, Castro Valley, CA 94546
Phone: 510-914-2900    
Dr. Louise Hom, M.D.
Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 20130 Lake Chabot Rd, Ste 202, Castro Valley, CA 94546
Phone: 510-583-8192    
James Lesher, MD
Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 19845 Lake Chabot Rd Ste 200, Castro Valley, CA 94546
Phone: 510-538-5500    

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.