Douglas Obrien, - Medicare Physician Assistant in Greenbrae, CA

Douglas Obrien, is a medicare enrolled "Physician Assistant" in Greenbrae, California. His current practice location is 250 Bon Air Rd, Greenbrae, California. You can reach out to his office (for appointments etc.) via phone at (415) 925-7000.

Douglas Obrien is licensed to practice in California (license number PA13578) 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 1235158239.

Contact Information

Douglas Obrien,
250 Bon Air Rd,
Greenbrae, CA 94904-1702
(415) 925-7000
Not Available

Map and Direction




Provider's Profile

Full NameDouglas Obrien
GenderMale
SpecialityPhysician Assistant
Location250 Bon Air Rd, Greenbrae, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1235158239
  • Provider Enumeration Date: 07/19/2006
  • Last Update Date: 03/03/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 7315907193
  • Enrollment ID: I20200618002494

Medical Identifiers

Medical identifiers for Douglas Obrien such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1235158239NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363A00000XPhysician Assistant PA13578 (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. Douglas Obrien 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
Douglas Obrien,
3746 Foothill Blvd # B140,
Glendale, CA 91214-1740

Ph: (310) 445-5999
Douglas Obrien,
250 Bon Air Rd,
Greenbrae, CA 94904-1702

Ph: (415) 925-7000

Reviews and Comments


Physician Assistant Nurses in Greenbrae, CA

Lauren Brooke Voss, PA-C
Physician Assistant
Medicare: Not Enrolled in Medicare
Practice Location: 350 Bon Air Rd, Suite 300, Greenbrae, CA 94904
Phone: 415-925-2880    
Dennis Eugene O'connell, PA-C
Physician Assistant
Medicare: Medicare Enrolled
Practice Location: 250 Bon Air Rd, Greenbrae, CA 94904
Phone: 415-925-7203    
Ms. Linda Ruth Clem, PA
Physician Assistant
Medicare: Medicare Enrolled
Practice Location: 1350 S Eliseo Dr, Greenbrae, CA 94904
Phone: 415-925-3590    
Ashley Lynn Detore, PA
Physician Assistant
Medicare: Medicare Enrolled
Practice Location: 1350 S Eliseo Dr Ste 300, Greenbrae, CA 94904
Phone: 484-332-8149    
Miss Wanda Wan Lian Zhao, PA-C
Physician Assistant
Medicare: Medicare Enrolled
Practice Location: 1100 S. Eliseo Ave Ste 2a, Sirona Vascular Center, Greenbrae, CA 94904
Phone: 415-464-5400    Fax: 415-464-5413
Alex David Friedman, PA-C
Physician Assistant
Medicare: Medicare Enrolled
Practice Location: 575 Sir Francis Drake Blvd Ste 1, Greenbrae, CA 94904
Phone: 415-625-3230    

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.