Dr Brian Martin Sebastian, MD - Medicare Internal Medicine in Sonoma, CA

Dr Brian Martin Sebastian, MD is a medicare enrolled "Internal Medicine" physician in Sonoma, California. He went to Duke University School Of Medicine and graduated in 1997 and has 27 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Regents Univ Of California Ucsf and his current practice location is 651 1st St W, Suite H, Sonoma, California. You can reach out to his office (for appointments etc.) via phone at (707) 938-3870.

Dr Brian Martin Sebastian is licensed to practice in California (license number A92199) and he also participates in the medicare program. He may accept medicare assignments (which means he may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance) and his NPI Number is 1184624637.

Contact Information

Dr Brian Martin Sebastian, MD
651 1st St W, Suite H,
Sonoma, CA 95476-7045
(707) 938-3870
Not Available

Map and Direction




Physician's Profile

Full NameDr Brian Martin Sebastian
GenderMale
SpecialityInternal Medicine
Experience27 Years
Location651 1st St W, Sonoma, California
Accepts Medicare AssignmentsMay be. He may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Brian Martin Sebastian attended and graduated from Duke University School Of Medicine in 1997
  NPI Data:
  • NPI Number: 1184624637
  • Provider Enumeration Date: 07/27/2005
  • Last Update Date: 02/07/2013
  Medicare PECOS Information:
  • PECOS PAC ID: 5991602906
  • Enrollment ID: I20050901000435

Medical Identifiers

Medical identifiers for Dr Brian Martin Sebastian such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1184624637NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine A92199 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Healing At HomeSonoma, CAHome health agency
St. Joseph Home Care - Greater Sonoma CountySanta rosa, CAHome health agency
Sonoma Valley HospitalSonoma, CAHospital
Queen Of The Valley Medical CenterNapa, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Regents Univ Of California Ucsf6305160300216

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 Brian Martin Sebastian allows following entities to bill medicare on his behalf.
Entity NamePrima Medical Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1811217946
PECOS PAC ID: 6406040138
Enrollment ID: O20101027000334
Entity NameRegents Univ Of California Ucsf
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1124439807
PECOS PAC ID: 6305160300
Enrollment ID: O20150122001375

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 Brian Martin Sebastian 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 Brian Martin Sebastian, MD
651 1st St W, Suite H,
Sonoma, CA 95476-7045

Ph: (707) 938-3870
Dr Brian Martin Sebastian, MD
651 1st St W, Suite H,
Sonoma, CA 95476-7045

Ph: (707) 938-3870

Reviews and Comments


Internal Medicine Doctors in Sonoma, CA

Dr. S Douglas Campbell, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 670 Third Street West, Sonoma, CA 95476
Phone: 707-938-5916    Fax: 707-938-8496
Walter C Prehn, MD
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 181 Andrieux Street, Suite 206, Sonoma, CA 95476
Phone: 707-495-7762    Fax: 707-938-7337
Dr. James Earl Price, MD
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 558 Third Street West, Sonoma, CA 95476
Phone: 707-935-1470    Fax: 707-935-7817
Dr. Alex Rainow, MD
Internal Medicine
Medicare: May Accept Medicare Assignments
Practice Location: 651 1st St W Ste L, Sonoma, CA 95476
Phone: 707-935-1470    Fax: 707-935-7817
John Gifford Boyce-smith, MD
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 4863 Grove St, Sonoma, CA 95476
Phone: 415-613-5338    
Dr. Dennis James Verducci, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 670 3rd St W, Sonoma, CA 95476
Phone: 707-938-5916    

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.