Gregory D Anderson, MD - Internal Medicine in Walnut Creek, CA

Gregory D Anderson, MD is a Internal Medicine - Critical Care Medicine physician based in Walnut Creek, California. Gregory D Anderson is licensed to practice in California (license number G25242) and his current practice location is 1425 S Main St, Walnut Creek, California. He can be reached at his office (for appointments etc.) via phone at (925) 295-4000.

NPI number for Gregory D Anderson is 1063590131 and his current mailing address is 1800 Harrison St Fl 7, Oakland, California. He does not participate in medicare program and thus does not accept medicare assignments. His NPI Number is 1063590131.

Contact Information

Gregory D Anderson, MD
1425 S Main St,
Walnut Creek, CA 94596-5318
(925) 295-4000
Not Available

Map and Direction




Physician's Profile

Full NameGregory D Anderson
GenderMale
SpecialityInternal Medicine - Critical Care Medicine
Location1425 S Main St, Walnut Creek, California
Accepts Medicare AssignmentsDoes not participate in Medicare Program. He may not accept medicare assignment.
  NPI Data:
  • NPI Number: 1063590131
  • Provider Enumeration Date: 11/02/2006
  • Last Update Date: 07/08/2007

Medical Identifiers

Medical identifiers for Gregory D Anderson such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1063590131NPI-NPPES
00G252420MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RC0200XInternal Medicine - Critical Care Medicine G25242 (California)Primary

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. Gregory D Anderson is NOT enrolled with medicare and thus cannot prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Gregory D Anderson, MD
1800 Harrison St Fl 7,
Oakland, CA 94612-3429

Ph: (510) 625-6262
Gregory D Anderson, MD
1425 S Main St,
Walnut Creek, CA 94596-5318

Ph: (925) 295-4000

Reviews and Comments


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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).

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