Dr Douglas David Gerstein, MD - Medicare Ophthalmology in San Rafael, CA

  1. Home
  2. Ophthalmology
  3. CA
  4. San Rafael
Dr Douglas David Gerstein, MD is a medicare enrolled "Ophthalmology" physician in San Rafael, California. His current practice location is 49 Dunfries Ter, San Rafael, California. You can reach out to his office (for appointments etc.) via phone at (415) 459-7788.

Dr Douglas David Gerstein is licensed to practice in California (license number G24353) 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 1376595207.

Contact Information

Dr Douglas David Gerstein, MD
49 Dunfries Ter,
San Rafael, CA 94901-2415
(415) 459-7788
(415) 459-7788

Map and Direction




Physician's Profile

Full NameDr Douglas David Gerstein
GenderMale
SpecialityOphthalmology
Location49 Dunfries Ter, San Rafael, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1376595207
  • Provider Enumeration Date: 05/17/2006
  • Last Update Date: 07/25/2008
  Medicare PECOS Information:
  • PECOS PAC ID: 4183646771
  • Enrollment ID: I20051222000802

Medical Identifiers

Medical identifiers for Dr Douglas David Gerstein such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1376595207NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207W00000XOphthalmology G24353 (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 Douglas David Gerstein allows following entities to bill medicare on his behalf.
Entity NameRegents Of The University Of California
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1760552343
PECOS PAC ID: 4284547274
Enrollment ID: O20031106000389
Entity NameUniversity Of California San Francisco
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1861578973
PECOS PAC ID: 4486567229
Enrollment ID: O20031212000897
Entity NameUcsf Medical Group Business Services
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1477624104
PECOS PAC ID: 3779497870
Enrollment ID: O20040622001513

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 Douglas David Gerstein 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 Douglas David Gerstein, MD
49 Dunfries Ter,
San Rafael, CA 94901-2415

Ph: (415) 459-7788		Dr Douglas David Gerstein, MD
49 Dunfries Ter,
San Rafael, CA 94901-2415

Ph: (415) 459-7788

Reviews and Comments


Ophthalmology Doctors in San Rafael, CA

Richard Giger Alvarado, MD
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 99 Montecillo Rd, San Rafael, CA 94903
Phone: 415-444-2000    
Dr. Kathryn K. Najafi-tagol, M.D.
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 4000 Civic Center Dr, Ste. 200a, San Rafael, CA 94903
Phone: 415-444-0300    Fax: 415-444-0301
Peter H. Gorenberg, MD
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 99 Montecillo Rd, San Rafael, CA 94903
Phone: 415-444-2000    
Christian K Kim, MD
Ophthalmology
Medicare: Accepting Medicare Assignments
Practice Location: 901 E St, Suite 285, San Rafael, CA 94901
Phone: 145-454-5565    Fax: 415-454-3358
Paul E. Prusiner, MD
Ophthalmology
Medicare: Not Enrolled in Medicare
Practice Location: 99 Montecillo Rd, San Rafael, CA 94903
Phone: 415-444-2000    
Brian R. Matas, MD
Ophthalmology
Medicare: Not Enrolled in Medicare
Practice Location: 99 Montecillo Rd, San Rafael, CA 94903
Phone: 415-444-2000    

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.