William M Mundy, MD - Medicare Family Practice in Berkeley, CA

William M Mundy, MD is a medicare enrolled "Hospitalist" physician in Berkeley, California. He went to Medical College Of Ohio and graduated in 1999 and has 25 years of diverse experience with area of expertise as Family Practice. He is a member of the group practice Marin Hospitalist Medical Group, Inc., Farallon Inpatient Medical Group Inc and his current practice location is 2450 Ashby Ave Rm 5505, Berkeley, California. You can reach out to his office (for appointments etc.) via phone at (510) 204-4444.

William M Mundy is licensed to practice in California (license number A105911) 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 1336341825.

Contact Information

William M Mundy, MD
2450 Ashby Ave Rm 5505,
Berkeley, CA 94705-2067
(510) 204-4444
(510) 649-8287

Map and Direction




Physician's Profile

Full NameWilliam M Mundy
GenderMale
SpecialityFamily Practice
Experience25 Years
Location2450 Ashby Ave Rm 5505, Berkeley, 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:
  • William M Mundy attended and graduated from Medical College Of Ohio in 1999
  NPI Data:
  • NPI Number: 1336341825
  • Provider Enumeration Date: 06/05/2007
  • Last Update Date: 07/21/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 3375641368
  • Enrollment ID: I20090211000815

Medical Identifiers

Medical identifiers for William M Mundy such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1336341825NPI-NPPES
A105911OtherCASTATE LICENSE

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine A105911 (California)Secondary
208M00000XHospitalist A105911 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Marinhealth Medical CenterGreenbrae, CAHospital
Sutter Lakeside HospitalLakeport, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Marin Hospitalist Medical Group, Inc.145625714634
Farallon Inpatient Medical Group Inc256771555010

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. William M Mundy allows following entities to bill medicare on his behalf.
Entity NameMarin Hospitalist Medical Group, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1023041753
PECOS PAC ID: 1456257146
Enrollment ID: O20031211001139
Entity NameFarallon Inpatient Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1417441080
PECOS PAC ID: 2567715550
Enrollment ID: O20181020000823

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 M Mundy 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
William M Mundy, MD
3687 Mt Diablo Blvd Ste 200,
Lafayette, CA 94549-3746

Ph: (916) 854-6975
William M Mundy, MD
2450 Ashby Ave Rm 5505,
Berkeley, CA 94705-2067

Ph: (510) 204-4444

Reviews and Comments


Hospitalist Doctors in Berkeley, CA

Julie Freedman, MD
Hospitalist
Medicare: Medicare Enrolled
Practice Location: 2450 Ashby Ave, Room 5505, Berkeley, CA 94705
Phone: 510-204-4444    Fax: 510-649-8287
Ursula Boynton, M.D.
Hospitalist
Medicare: Medicare Enrolled
Practice Location: 2450 Ashby Ave, Room 1002, Berkeley, CA 94705
Phone: 510-204-1893    Fax: 510-649-8287
Judith A Stanton, M.D.
Hospitalist
Medicare: Accepting Medicare Assignments
Practice Location: 2450 Ashby Ave Rm 5505, Berkeley, CA 94705
Phone: 510-204-4444    Fax: 510-649-8287
Merry Beth Gong, M.D.
Hospitalist
Medicare: Medicare Enrolled
Practice Location: 2344 6th St, Berkeley, CA 94710
Phone: 510-981-3203    Fax: 510-553-2169
Susan Y. Kao, MD
Hospitalist
Medicare: Accepting Medicare Assignments
Practice Location: 2001 Dwight Way, Berkeley, CA 94704
Phone: 510-204-6401    Fax: 510-204-6440
Mac Lincoln Sterling, M.D.
Hospitalist
Medicare: Accepting Medicare Assignments
Practice Location: 2450 Ashby Ave Rm 5505, Berkeley, CA 94705
Phone: 510-204-4444    Fax: 510-649-8287
Alejo Santa Cruz, M.D.
Hospitalist
Medicare: Accepting Medicare Assignments
Practice Location: 2450 Ashby Ave Rm 5505, Berkeley, CA 94705
Phone: 510-204-4444    Fax: 510-649-8287

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.