Gonzalo Platon Obnial, M.D.

Primary specialty

Vascular Surgery PhysicianTaxonomy code 2086S0129X

License

A112342 Issued in CA

Practice address

2637 Shadelands Dr
Walnut Creek, CA 94598-2512

Phone

(925) 932-6330

Fax

(925) 932-0139

NPI assigned

Nov 11, 2008

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 2

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

Vascular Surgery

Education

Other, 2000

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Bass Medical GroupGroup PAC ID 9032111281, 292 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Alta Bates Summit Medical Center Hospital, Oakland, CA, CCN 050043
• John Muir Medical Center - Concord Campus Hospital, Concord, CA, CCN 050496
• Contra Costa Regional Medical Center Hospital, Martinez, CA, CCN 050276
• John Muir Medical Center - Walnut Creek Campus Hospital, Walnut Creek, CA, CCN 050180
• Sutter Delta Medical Center Hospital, Antioch, CA, CCN 050523

Merit-based Incentive Payment System (MIPS)

Final score

99.25 of 100Reported as individual

Quality

89.04

Promoting interoperability

100

Improvement activities

40

Cost

75.14

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

• Direct secure messaging: gobnial161308@hisp.ehr.sutterhealth.org
• FHIR API: https://fhir4.healow.com/fhir/r4/IBDGCA
• Direct secure messaging: gobnial18089@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 and National Provider Directory roles.

• 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
• Shadelands Endovascular, LLC

  • Ambulatory Surgical Clinic/Center
  • Walnut Creek, CA
  • NPI 1245620954
  Medicare reassignment NPD
• Bass Medical Group

  • Orthopaedic Surgery Physician
  • Walnut Creek, CA
  • NPI 1043616600
  NPD
• Bass Medical Group

  • Orthopaedic Surgery Physician
  • San Ramon, CA
  • NPI 1467329904
  NPD
• John Muir Trauma Physicians Billing Service

  • Trauma Surgery Physician
  • Walnut Creek, CA
  • NPI 1962551861
  NPD
• Alta Bates Summit Medical Center

  • Substance Use Disorder Rehabilitation Hospital Unit
  • Oakland, CA
  • NPI 1043358542
  NPD (past)
• Bass Medical Group

  • Specialist
  • Walnut Creek, CA
  • NPI 1154401941
  NPD (past)
• Bass Medical Group

  • Pain Medicine Physician
  • Visalia, CA
  • NPI 1326409343
  NPD (past)
• California Pacific Medical Group, Inc.

  • Multi-Specialty Clinic/Center
  • Oakland, CA
  • NPI 1275002453
  NPD (past)
• Eden Medical Center/San Leandro Hospital Campus

  • Rehabilitation Hospital Unit
  • San Leandro, CA
  • NPI 1679523633
  NPD (past)
• John Muir Health

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

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

• Contra Costa County

  • General Acute Care Hospital
  • Martinez, CA
  • NPI 1386719086
  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 Bay Hospitals

  • General Acute Care Hospital
  • Oakland, CA
  • NPI 1295181477
  Care Compare affiliation
• Sutter Bay Hospitals

  • General Acute Care Hospital
  • Antioch, CA
  • NPI 1467808659
  Care Compare affiliation

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

{
    "created_epoch": "1226361600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1740700800000",
    "number": "1497909931",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2637 SHADELANDS DR",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945982512",
            "telephone_number": "925-932-6330",
            "fax_number": "925-932-0139"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2637 SHADELANDS DR",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945982512",
            "telephone_number": "925-932-6330",
            "fax_number": "925-932-0139"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "350 30th St Ste 210",
            "address_purpose": "LOCATION",
            "city": "Oakland",
            "state": "CA",
            "postal_code": "946093425",
            "country_code": "US",
            "telephone_number": "510-832-6131",
            "fax_number": "510-832-6169",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "OBNIAL",
        "first_name": "GONZALO",
        "middle_name": "PLATON",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2008-11-11",
        "last_updated": "2025-02-28",
        "certification_date": "2025-02-28",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "MI",
            "license": "4301091346",
            "primary": false
        },
        {
            "code": "2086S0129X",
            "taxonomy_group": "",
            "desc": "Surgery, Vascular Surgery",
            "state": "CA",
            "license": "A112342",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Maeve O'Regan, MD
• Oasis Center Inc
• Christine Oates, PSYD
• OB-GYN Specialists, Inc.
• Adetoun Adenike Obadofin, NP
• Kristen Obrinsky, P.T.
• Occupational Health Centers of California, a Medical Corporation
• Occupational Health Centers of California, a Medical Corporation
• Occupational Health Centers of California, a Medical Corporation
• Daisy Marlene Ochoa Maciel

• Vascular Surgery Physician in Walnut Creek, CA
• Providers in Walnut Creek, CA by specialty
• Vascular Surgery Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 28, 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.