Dr Mark D Schafer, MD - Medicare Internal Medicine in Tustin, CA

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Dr Mark D Schafer, MD is a medicare enrolled "Internal Medicine" physician in Tustin, California. His current practice location is 2742 Dow Ave, Tustin, California. You can reach out to his office (for appointments etc.) via phone at (714) 665-1661.

Dr Mark D Schafer is licensed to practice in California (license number G69584) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1417948894.

Contact Information

Dr Mark D Schafer, MD
2742 Dow Ave,
Tustin, CA 92780-7242
(714) 665-1661
(714) 665-1669

Map and Direction




Physician's Profile

Full NameDr Mark D Schafer
GenderMale
SpecialityInternal Medicine
Location2742 Dow Ave, Tustin, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1417948894
  • Provider Enumeration Date: 11/03/2005
  • Last Update Date: 02/08/2018
  Medicare PECOS Information:
  • PECOS PAC ID: 0749176626
  • Enrollment ID: I20100315000415

Medical Identifiers

Medical identifiers for Dr Mark D Schafer such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1417948894NPI-NPPES
00G695840MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine G69584 (California)Primary

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 Mark D Schafer allows following entities to bill medicare on his behalf.
Entity NameMemorialcare Medical Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1205167350
PECOS PAC ID: 8729277314
Enrollment ID: O20110113000219

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 Mark D Schafer 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 Mark D Schafer, MD
2742 Dow Ave,
Tustin, CA 92780-7242

Ph: (714) 665-1600		Dr Mark D Schafer, MD
2742 Dow Ave,
Tustin, CA 92780-7242

Ph: (714) 665-1661

Reviews and Comments


Internal Medicine Doctors in Tustin, CA

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Phone: 714-573-8200    Fax: 714-573-9401
Madonna A Nicolai, CFNP
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Phone: 714-550-9990    Fax: 714-550-1226

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.