Dr Mark J Freeman, MD - Medicare Family Medicine in Clearlake, CA

Dr Mark J Freeman, MD is a medicare enrolled "Family Medicine" physician in Clearlake, California. His current practice location is 15322 Lakeshore Dr, Ste 101, Clearlake, California. You can reach out to his office (for appointments etc.) via phone at (707) 995-1362.

Dr Mark J Freeman is licensed to practice in California (license number G47688) 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 1801898929.

Contact Information

Dr Mark J Freeman, MD
15322 Lakeshore Dr, Ste 101,
Clearlake, CA 95422-9815
(707) 995-1362
(707) 995-7057

Map and Direction




Physician's Profile

Full NameDr Mark J Freeman
GenderMale
SpecialityFamily Medicine
Location15322 Lakeshore Dr, Clearlake, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1801898929
  • Provider Enumeration Date: 06/01/2005
  • Last Update Date: 04/17/2009
  Medicare PECOS Information:
  • PECOS PAC ID: 7810896750
  • Enrollment ID: I20040108000679

Medical Identifiers

Medical identifiers for Dr Mark J Freeman such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1801898929NPI-NPPES
00G476880MedicaidCA
P00660683OtherCAMEDICARE RAILROAD #
080150278OtherMEDICARE RAILROAD #

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine G47688 (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 J Freeman allows following entities to bill medicare on his behalf.
Entity NameAdventist Health Physicians Network
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1063718583
PECOS PAC ID: 3274580972
Enrollment ID: O20050407000633

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 J Freeman 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 J Freeman, MD
15322 Lakeshore Dr, Ste 101,
Clearlake, CA 95422-9815

Ph: (707) 995-1362
Dr Mark J Freeman, MD
15322 Lakeshore Dr, Ste 101,
Clearlake, CA 95422-9815

Ph: (707) 995-1362

Reviews and Comments


Family Medicine Doctors in Clearlake, CA

Gail Marquette, FNP
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 15230 Lakeshore Dr, Clearlake, CA 95422
Phone: 707-995-4500    Fax: 707-994-2401
Dr. Jerry Edward Douglas, MD
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 15322 Lakeshore Dr, Suite 202, Clearlake, CA 95422
Phone: 707-994-0303    Fax: 707-995-9447
Sonja Derose, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 15230 Lakeshore Dr, Clearlake, CA 95422
Phone: 707-995-4500    
Wolfgang Schug, MD
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 15230 Lakeshore Dr, Clearlake, CA 95422
Phone: 707-995-4500    Fax: 707-994-2401
Siqi Ma, DO
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 15230 Lakeshore Dr, Clearlake, CA 95422
Phone: 707-995-4500    
Dr. John Alden Weeks, M.D.
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 15230 Lakeshore Dr, Suite 101, Clearlake, CA 95422
Phone: 707-994-7377    Fax: 707-994-9456

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.