Jamal Julian Zaka, M. D.

Primary specialty

Pulmonary Disease PhysicianTaxonomy code 207RP1001X

License

A113378 Issued in CA

Practice address

130 La Casa Via
#208
Walnut Creek, CA 94598-3045

Phone

(925) 944-0166

NPI assigned

Mar 10, 2008

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Other names 1

• Julian Lorrain Williams Former name

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

Pulmonary DiseaseAlso: Critical Care (Intensivists)

Education

Other, 2002

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Bass Medical GroupGroup PAC ID 9032111281, 292 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Contra Costa Regional Medical Center Hospital, Martinez, CA, CCN 050276
• John Muir Medical Center - Walnut Creek Campus Hospital, Walnut Creek, CA, CCN 050180
• John Muir Medical Center - Concord Campus Hospital, Concord, CA, CCN 050496

Merit-based Incentive Payment System (MIPS)

Final score

92.44 of 100Reported as individual

Quality

89.47

Promoting interoperability

100

Improvement activities

40

Cost

82.88

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

• Direct secure messaging: jzaka16848@ehr.johnmuirhealth.com

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

• Bass Medical Group

  • Obstetrics & Gynecology Physician
  • Walnut Creek, CA
  • NPI 1174253405
  Medicare reassignment Care Compare group NPD
• John Muir Trauma Physicians Billing Service

  • Hospitalist Physician
  • Walnut Creek, CA
  • NPI 1093864837
  Medicare reassignment NPD
• Ahi Solutions, Inc.

  • Clinical Medical Laboratory
  • Oakland, CA
  • NPI 1568694792
  NPD
• Bass Medical Group

  • Orthopaedic Surgery Physician
  • San Ramon, CA
  • NPI 1467329904
  NPD
• Bay Area Surgical Specialists, Inc a Medical Corporation

  • Orthopaedic Surgery Physician
  • Sacramento, CA
  • NPI 1356702526
  NPD
• John Muir Trauma Physicians Billing Service

  • Trauma Surgery Physician
  • Walnut Creek, CA
  • NPI 1962551861
  NPD
• Bass Medical Group

  • Specialist
  • Walnut Creek, CA
  • NPI 1154401941
  NPD (past)
• Sleep Apnea Testing and Treatment Center, Inc.

  • Sleep Disorder Diagnostic Clinic/Center
  • Oakland, CA
  • NPI 1538040720
  NPD (past)
• Fayette Lung and Sleep Center, PC

  • Critical Care Medicine (Internal Medicine) Physician
  • Uniontown, PA
  • NPI 1245336072
  NPD (past)

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

• Contra Costa County

  dba Contra Costa Health

  • General Acute Care Hospital
  • Martinez, CA
  • NPI 1386719086
  Care Compare affiliation
• John Muir Health

  dba John Muir Health, Walnut Creek Medical Center

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

  dba John Muir Health Medical Center, Concord Campus

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

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

{
    "created_epoch": "1205107200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1752451200000",
    "number": "1053581769",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "130 LA CASA VIA",
            "address_2": "#208",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945983045",
            "telephone_number": "925-944-0166"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "130 LA CASA VIA",
            "address_2": "#208",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945983045",
            "telephone_number": "925-944-0166"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "400 29th St Ste 208A",
            "address_purpose": "LOCATION",
            "city": "Oakland",
            "state": "CA",
            "postal_code": "946093547",
            "country_code": "US",
            "telephone_number": "341-234-0072",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ZAKA",
        "first_name": "JAMAL",
        "middle_name": "JULIAN",
        "name_prefix": "Dr.",
        "credential": "M. D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2008-03-10",
        "last_updated": "2025-07-14",
        "certification_date": "2025-07-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RP1001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Pulmonary Disease",
            "state": "PA",
            "license": "MD433282",
            "primary": false
        },
        {
            "code": "207RP1001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Pulmonary Disease",
            "state": "CA",
            "license": "A113378",
            "primary": true
        },
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "CA",
            "license": "A113378",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "JULIAN",
            "last_name": "WILLIAMS",
            "middle_name": "LORRAIN",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Alexandra Yuskiv
• Christopher Zacarias
• Brandy Zachary, DC, IFMCP
• Diana Michelle Zachlod
• Zainab Al-Dhaher M.D., a Professional Corporation (Dawn Psychiatry and Wellness)
• Anna Zakasovskaya, PA-C
• Basma Zaky, DDS
• Renee Dahlke Zaloumis, L.C.S.W.
• Sam Saeed Zamani, M.D.
• Dejia Zambrano

• Pulmonary Disease Physician in Walnut Creek, CA
• Providers in Walnut Creek, CA by specialty
• Pulmonary Disease Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 14, 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.