John Ulric Zink, MD

Primary specialty

Surgery PhysicianTaxonomy code 208600000X

License

A124639 Issued in CA

Practice address

2637 Shadelands Dr
Walnut Creek, CA 94598-2512

Phone

(925) 932-6330

Fax

(925) 932-0139

NPI assigned

Jan 14, 2008

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

General Surgery

Education

University of Southern California Keck School of Medicine, 2007

Medicare assignment

May accept Medicare assignment

Group practices

Medamerica Physician Solutions PCGroup PAC ID 8729221809, 28 clinicians

Bass Medical GroupGroup PAC ID 9032111281, 292 clinicians

John Muir Trauma Physicians Billing ServiceGroup PAC ID 3476542515, 111 clinicians

Cep America - Auc PCGroup PAC ID 9537481692, 26 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• John Muir Home Health Services Home health agency, Concord, CA, CCN 057276
• John Muir Medical Center - Walnut Creek Campus Hospital, Walnut Creek, CA, CCN 050180
• Sutter Delta Medical Center Hospital, Antioch, CA, CCN 050523
• John Muir Medical Center - Concord Campus Hospital, Concord, CA, CCN 050496

Merit-based Incentive Payment System (MIPS)

Final score

83.63 of 100Reported as group

Quality

67.56

Improvement activities

40

Cost

71.56

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: john.zink.1@20515.direct.athenahealth.com
• Direct secure messaging: jzink18137@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
• Cep America - Auc PC

  • General Practice Physician
  • Walnut Creek, CA
  • NPI 1568861524
  Medicare reassignment Care Compare group NPD
• John Muir Trauma Physicians Billing Service

  • Hospitalist Physician
  • Walnut Creek, CA
  • NPI 1093864837
  Medicare reassignment Care Compare group NPD
• Medamerica Physician Solutions PC

  • Clinic/Center
  • Walnut Creek, CA
  • NPI 1487237111
  Medicare reassignment Care Compare group NPD
• Bass Medical Group

  • Orthopaedic Surgery Physician
  • Castro Valley, CA
  • NPI 1093181646
  NPD
• Bass Medical Group

  • Orthopaedic Surgery Physician
  • San Ramon, CA
  • NPI 1467329904
  NPD
• Cep America - Auc PC

  • General Practice Physician
  • San Ramon, CA
  • NPI 1750024493

  Surgery

  NPD
• John Muir Trauma Physicians Billing Service

  • Trauma Surgery Physician
  • Walnut Creek, CA
  • NPI 1962551861
  NPD
• Cep America - Auc PC

  • General Practice Physician
  • Newport News, VA
  • NPI 1104657329
  NPD
• Bass Medical Group

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

  • Pain Medicine Physician
  • Visalia, CA
  • NPI 1326409343
  NPD (past)
• Brockton Podiatry Group a Prof Corp

  • Foot & Ankle Surgery Podiatrist
  • Redlands, CA
  • NPI 1275867228
  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 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": "1200268800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1738886400000",
    "number": "1366628935",
    "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": "365 Lennon Ln",
            "address_2": "#250",
            "address_purpose": "LOCATION",
            "city": "Walnut Creek",
            "state": "CA",
            "postal_code": "945985910",
            "country_code": "US",
            "telephone_number": "925-932-6330",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ZINK",
        "first_name": "JOHN",
        "middle_name": "ULRIC",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2008-01-14",
        "last_updated": "2025-02-07",
        "certification_date": "2025-02-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "CA",
            "license": "A124639",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Natalia Zielkiewicz, M.D.
• Metasebya Solomon Zike
• Jay William Zimmerman, M.D.
• Lynn R Zimmerman, SLP
• Rupa Puri Zimmermann, PHD
• Ivana Zivkovic
• Ashraf Ziyar, LMFT, APCC
• Douglas W Zlock, M.D.
• Nikita Quinlan Zuanich
• Mansoor S Zuberi, MD

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

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 7, 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.