Walter Zaks, M. D.

Primary specialty

Family Medicine PhysicianTaxonomy code 207Q00000X

License

G34777 Issued in CA

Practice address

1440 Military W
Suite 101
Benicia, CA 94510-2451

Phone

(707) 745-0711

Fax

(707) 745-0788

NPI assigned

Mar 22, 2006

Sex

Male

Sole proprietor

Yes

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Family Practice

Education

University of California, San Francisco School of Medicine, 1975

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Practice addresses (Care Compare)

Hospital & facility affiliations

• John Muir Home Health Services Home health agency, Concord, CA, CCN 057276
• John Muir Medical Center - Concord Campus Hospital, Concord, CA, CCN 050496
• John Muir Medical Center - Walnut Creek Campus Hospital, Walnut Creek, CA, CCN 050180
• Sutter Solano Medical Center Hospital, Vallejo, CA, CCN 050101

Merit-based Incentive Payment System (MIPS)

Final score

29.81 of 100Reported as individual

Quality

0

Improvement activities

0

Cost

99.37

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: wzaks25682@hpmg.direct-ci.net

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Family Health Center of Benicia

  • Family Medicine Physician
  • Benicia, CA
  • NPI 1336194646
  NPD
• Hill Physicians Medical Group - PPO Program

  • Preferred Provider Organization
  • San Ramon, CA
  • NPI 1679011035
  NPD (past)
• John Muir Health

  • Rehabilitation Hospital Unit
  • Walnut Creek, CA
  • NPI 1447269303
  NPD (past)
• John Muir Health

  • General Acute Care Hospital
  • Concord, CA
  • NPI 1801821376
  NPD (past)
• Sutter Valley Hospitals

  • General Acute Care Hospital
  • Vallejo, CA
  • NPI 1366686248
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• John Muir Health

  • Home Health Agency
  • Concord, CA
  • NPI 1437161452
  Care Compare affiliation
• John Muir Health

  • General Acute Care Hospital
  • Walnut Creek, CA
  • NPI 1740215219
  Care Compare affiliation
• John Muir Health

  • General Acute Care Hospital
  • Concord, CA
  • NPI 1801821376
  Care Compare affiliation
• Sutter Valley Hospitals

  • General Acute Care Hospital
  • Vallejo, CA
  • NPI 1366686248
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1142985600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1747612800000",
    "number": "1316906704",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1440 MILITARY W",
            "address_2": "SUITE 101",
            "city": "BENICIA",
            "state": "CA",
            "postal_code": "945102451",
            "telephone_number": "707-745-0711",
            "fax_number": "707-745-0788"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1440 MILITARY W",
            "address_2": "SUITE 101",
            "city": "BENICIA",
            "state": "CA",
            "postal_code": "945102451",
            "telephone_number": "707-745-0711",
            "fax_number": "707-745-0788"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ZAKS",
        "first_name": "WALTER",
        "credential": "M. D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-03-22",
        "last_updated": "2025-05-19",
        "certification_date": "2025-05-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "CA",
            "license": "G34777",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Woodbridge Transitions, LLC.
• David Woodin, LMFT
• Anny Wu
• Yan Kalika Dental Corporation
• Aaron Joseph Zaks, DO
• Sara Beth Zambrano, FNP

• Family Medicine Physician in Benicia, CA
• Providers in Benicia, CA by specialty
• Family Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 19, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.