Dr John Ulric Zink, MD - Medicare General Surgery in Walnut Creek, CA

Dr John Ulric Zink, MD is a medicare enrolled "Surgery" physician in Walnut Creek, California. He went to University Of Southern California Keck School Of Medicine and graduated in 2007 and has 17 years of diverse experience with area of expertise as General Surgery. He is a member of the group practice Bass Medical Group, John Muir Trauma Physicians Billing Service and his current practice location is 2637 Shadelands Dr, Walnut Creek, California. You can reach out to his office (for appointments etc.) via phone at (925) 932-6330.

Dr John Ulric Zink is licensed to practice in California (license number A124639) and he also participates in the medicare program. He may accept medicare assignments (which means he may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance) and his NPI Number is 1366628935.

Contact Information

Dr John Ulric Zink, MD
2637 Shadelands Dr,
Walnut Creek, CA 94598-2512
(925) 932-6330
(925) 932-0139

Map and Direction




Physician's Profile

Full NameDr John Ulric Zink
GenderMale
SpecialityGeneral Surgery
Experience17 Years
Location2637 Shadelands Dr, Walnut Creek, California
Accepts Medicare AssignmentsMay be. He may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr John Ulric Zink attended and graduated from University Of Southern California Keck School Of Medicine in 2007
  NPI Data:
  • NPI Number: 1366628935
  • Provider Enumeration Date: 01/14/2008
  • Last Update Date: 02/11/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 4688800386
  • Enrollment ID: I20140102000785

Medical Identifiers

Medical identifiers for Dr John Ulric Zink such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1366628935NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208600000XSurgery A124639 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
John Muir Medical Center - Walnut Creek CampusWalnut creek, CAHospital
John Muir Medical Center - Concord CampusConcord, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Bass Medical Group9032111281309
John Muir Trauma Physicians Billing Service3476542515127

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr John Ulric Zink allows following entities to bill medicare on his behalf.
Entity NameJohn Muir Trauma Physicians Billing Service
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1093864837
PECOS PAC ID: 3476542515
Enrollment ID: O20050420001452
Entity NameBass Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1174253405
PECOS PAC ID: 9032111281
Enrollment ID: O20070201000181

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr John Ulric Zink is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr John Ulric Zink, MD
2637 Shadelands Dr,
Walnut Creek, CA 94598-2512

Ph: (925) 932-6330
Dr John Ulric Zink, MD
2637 Shadelands Dr,
Walnut Creek, CA 94598-2512

Ph: (925) 932-6330

Reviews and Comments


Surgery Doctors in Walnut Creek, CA

Dr. Jesus Gil Jimenez, MD
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Practice Location: 1425 S Main St, Walnut Creek, CA 94596
Phone: 925-295-4110    
William M. Greif, MD
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Phone: 925-295-4000    
Dr. Negar Monavar Salehomoum, M.D.
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Practice Location: 365 Lennon Ln Ste 290, Walnut Creek, CA 94598
Phone: 925-274-9000    Fax: 925-274-9004
Kara L. Riley-paull, MD
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Medicare: Medicare Enrolled
Practice Location: 1425 S Main St, Walnut Creek, CA 94596
Phone: 925-295-4000    
Dr. Irene Jia-shin Lo, M.D.
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Practice Location: 130 La Casa Via, Building 3, Suite 211, Walnut Creek, CA 94598
Phone: 925-933-0984    
Dr. Aaron Brandon Chin, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 1425 S Main St, Walnut Creek, CA 94596
Phone: 925-295-4000    
Charles F. Rieder, MD
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Medicare: Not Enrolled in Medicare
Practice Location: 1425 S Main St, Walnut Creek, CA 94596
Phone: 925-295-4000    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.