NPIMap

Individual provider Active NPI

Steven Sarkis Zourabian, D.O.

  • Orthopaedic Trauma Physician
  • Castro Valley, CA
National Provider Identifier
1578918926
Registry record updated Mar 19, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Orthopaedic Trauma PhysicianTaxonomy code 207XX0801X
License
20A15813 Issued in CA
Practice address
19842 Lake Chabot Rd
Castro Valley, CA 94546-4002
Phone
(510) 750-1967
Fax
(844) 718-0067
NPI assigned
May 3, 2016
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Mar 19, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Orthopaedic Trauma Physician 207XX0801X 20A15813 CA Primary

Addresses

Primary practice location

19842 Lake Chabot Rd
Castro Valley, CA 94546-4002

Mailing address

19842 Lake Chabot Rd
Castro Valley, CA 94546-4002
Phone (510) 750-1967

Other practice location 1

350 Hawthorne Ave
Oakland, CA 94609-3108
Phone (510) 655-4000

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20220713001434 CA Practitioner - Orthopedic Surgery 1254734007 Reassigns benefits to 5 organizations

Care Compare profile

Medicare Care Compare
Specialty
Orthopedic Surgery
Education
Lake Erie College of Osteopathic Medicine, Erie, 2016
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Orion Orthopaedic Trauma IncGroup PAC ID 0345562005, 4 clinicians
Bass Medical GroupGroup PAC ID 9032111281, 292 clinicians
Sutter Bay Medical FoundationGroup PAC ID 4284538778, 3,783 clinicians
San Joaquin Faculty Medical GroupGroup PAC ID 4082631395, 126 clinicians
County of San JoaquinGroup PAC ID 6002703436, 199 clinicians

Practice addresses (Care Compare)

1335 Coffee Rd
Suite 100
Modesto, CA 95355-3192
Phone (209) 524-4649

1505 Saint Alphonsus Way
Alamo, CA 94507-1570
Phone (925) 932-6330

2450 Ashby Ave
Berkeley, CA 94705-2067
Phone (510) 204-4444

3200 Kearney St
Fremont, CA 94538-2299
Phone (510) 490-1222

500 W Hospital Rd
French Camp, CA 95231-9693
Phone (209) 468-6600

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
95.17 of 100Reported as group
Quality
86.93
Promoting interoperability
100
Improvement activities
40
Cost
72.6

Merit-based Incentive Payment System (MIPS)

Final score
81.79 of 100Reported as group
Quality
71.65
Improvement activities
40
Cost
57.96

Merit-based Incentive Payment System (MIPS)

Final score
53.98 of 100Reported as group
Quality
11.8
Promoting interoperability
74
Improvement activities
0
Cost
82.7

Procedures performed for Medicare patients

ProcedureNumber of procedures
Hip replacement15
Knee replacement1-10
Removal of tissue1-10

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Osteopathy

Practice roles

OrganizationSpecialtyStatusNew patients
County of San Joaquin CurrentSince Oct 5, 2022 Accepting new patients
San Joaquin Faculty Medical Group CurrentSince Oct 5, 2022 Accepting new patients
Alameda Health System CurrentSince Aug 1, 2022 Accepting new patients
County of San Joaquin CurrentSince Oct 5, 2022 Accepting new patients
Bass Medical Group Orthopaedic Surgery CurrentSince Aug 1, 2022 Accepting new patients
Orion Orthopaedic Trauma, Inc Orthopaedic Trauma CurrentSince Sep 2, 2024 Accepting new patients
Alameda Health System CurrentSince Aug 1, 2022 Accepting new patients
Bass Medical Group Orthopaedic Surgery Current Accepting new patients
Bass Medical Group Orthopaedic Surgery CurrentSince Aug 1, 2022 Accepting new patients
Curators of the University of Missouri Past Accepting new patients
Bass Medical Group Past Accepting new patients
Eden Medical Center/San Leandro Hospital Campus Past Accepting new patients
County of San Joaquin Past Accepting new patients
Bass Medical Group Past Accepting new patients
Sutter Valley Hospitals Past Accepting new patients
Alameda Health System Past Accepting new patients

Locations

1505 Saint Alphonsus Way
Alamo, CA 94507
Phone (925) 837-4225

19842 Lake Chabot Rd
Castro Valley, CA 94546
Phone (510) 219-0313

500 W Hospital Rd
French Camp, CA 95231
Phone (209) 468-6000

1441 Florida Ave
Modesto, CA 95350
Phone (209) 214-7235

1335 Coffee Rd
Ste 100
Modesto, CA 95355
Phone (209) 524-4438

1411 E 31st St
Oakland, CA 94602
Phone (510) 437-4323

365 Lennon Ln
Ste 250
Walnut Creek, CA 94598
Phone (925) 627-3424

Networks

  • BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

  • Direct secure messaging: szourabian95687@alamedahs.direct-ci.com
  • Direct secure messaging: szourabian154693@ehr.johnmuirhealth.com

Organizations & group practices 17

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.

View all 17

Hospital & facility affiliations 6

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

NPI Registry JSON

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

{
    "created_epoch": "1462233600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1773878400000",
    "number": "1578918926",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "19842 LAKE CHABOT RD",
            "city": "CASTRO VALLEY",
            "state": "CA",
            "postal_code": "945464002",
            "telephone_number": "510-750-1967",
            "fax_number": "844-718-0067"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "19842 LAKE CHABOT RD",
            "city": "CASTRO VALLEY",
            "state": "CA",
            "postal_code": "945464002",
            "telephone_number": "510-750-1967",
            "fax_number": "844-718-0067"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "350 Hawthorne Ave",
            "address_purpose": "LOCATION",
            "city": "Oakland",
            "state": "CA",
            "postal_code": "946093108",
            "country_code": "US",
            "telephone_number": "510-655-4000",
            "fax_number": "510-869-9688",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ZOURABIAN",
        "first_name": "STEVEN",
        "middle_name": "SARKIS",
        "credential": "D.O.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2016-05-03",
        "last_updated": "2026-03-19",
        "certification_date": "2026-03-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207XX0801X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery, Orthopaedic Trauma",
            "state": "CA",
            "license": "20A15813",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Castro Valley, CA

Sources for this page

Verify at the official NPI Registry.