Dr Michael A Esparza, MD - Medicare General Surgery in Walnut Creek, CA

Dr Michael A Esparza, MD is a medicare enrolled "Surgery - Trauma Surgery" physician in Walnut Creek, California. He graduated from medical school in 2014 and has 10 years of diverse experience with area of expertise as General Surgery. He is a member of the group practice John Muir Trauma Physicians Billing Service and his current practice location is 1601 Ygnacio Valley Rd, Walnut Creek, California. You can reach out to his office (for appointments etc.) via phone at (925) 937-0404.

Dr Michael A Esparza is licensed to practice in California (license number A138859) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1295149540.

Contact Information

Dr Michael A Esparza, MD
1601 Ygnacio Valley Rd,
Walnut Creek, CA 94598-3122
(925) 937-0404
Not Available

Map and Direction




Physician's Profile

Full NameDr Michael A Esparza
GenderMale
SpecialityGeneral Surgery
Experience10 Years
Location1601 Ygnacio Valley Rd, Walnut Creek, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Michael A Esparza graduated from medical school in 2014
  NPI Data:
  • NPI Number: 1295149540
  • Provider Enumeration Date: 06/15/2014
  • Last Update Date: 09/05/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 6305137381
  • Enrollment ID: I20200317000420

Medical Identifiers

Medical identifiers for Dr Michael A Esparza such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1295149540NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2086S0102XSurgery - Surgical Critical Care A138859 (California)Secondary
2086S0127XSurgery - Trauma Surgery A138859 (California)Primary

Medical Facilities Affiliation

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

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 Michael A Esparza allows following entities to bill medicare on his behalf.
Entity NameChildrens Hospital Los Angeles Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1265530653
PECOS PAC ID: 0143126920
Enrollment ID: O20031211000522
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 NameMichael A Esparza Md Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1417568916
PECOS PAC ID: 5193144137
Enrollment ID: O20200924002608

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 Michael A Esparza 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 Michael A Esparza, MD
Po Box 56,
Diablo, CA 94528-0056

Ph: () -
Dr Michael A Esparza, MD
1601 Ygnacio Valley Rd,
Walnut Creek, CA 94598-3122

Ph: (925) 937-0404

Reviews and Comments


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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.