Mary Margaret Hadcock, MD - Medicare General Surgery in Fresno, CA

Mary Margaret Hadcock, MD is a medicare enrolled "Surgery - Surgical Oncology" physician in Fresno, California. She went to Loyola University Of Chicago, Stritch School Of Medicine and graduated in 1979 and has 45 years of diverse experience with area of expertise as General Surgery. Her current practice location is 7887 N Cedar Ave, Fresno, California. You can reach out to her office (for appointments etc.) via phone at (559) 320-4300.

Mary Margaret Hadcock is licensed to practice in California (license number G52091) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1942247606.

Contact Information

Mary Margaret Hadcock, MD
7887 N Cedar Ave,
Fresno, CA 93720-2685
(559) 320-4300
(559) 320-4343

Map and Direction




Physician's Profile

Full NameMary Margaret Hadcock
GenderFemale
SpecialityGeneral Surgery
Experience45 Years
Location7887 N Cedar Ave, Fresno, California
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Mary Margaret Hadcock attended and graduated from Loyola University Of Chicago, Stritch School Of Medicine in 1979
  NPI Data:
  • NPI Number: 1942247606
  • Provider Enumeration Date: 06/01/2006
  • Last Update Date: 03/10/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 5092601062
  • Enrollment ID: I20040302001314

Medical Identifiers

Medical identifiers for Mary Margaret Hadcock such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1942247606NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2086X0206XSurgery - Surgical Oncology G52091 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Saint Agnes Medical CenterFresno, 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. Mary Margaret Hadcock allows following entities to bill medicare on her behalf.
Entity NameM. Margaret Hadcock, M.d., Fresno Breast Surgery, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1992710701
PECOS PAC ID: 7618073552
Enrollment ID: O20070509000368

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. Mary Margaret Hadcock 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
Mary Margaret Hadcock, MD
1247 E Alluvial Ave Ste 101,
Fresno, CA 93720-2686

Ph: (559) 431-6226
Mary Margaret Hadcock, MD
7887 N Cedar Ave,
Fresno, CA 93720-2685

Ph: (559) 320-4300

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.