Jennifer Grayzar, MD - Medicare Emergency Medicine in San Rafael, CA

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Jennifer Grayzar, MD is a medicare enrolled "Emergency Medicine" physician in San Rafael, California. Her current practice location is 4000 Civic Center Dr Ste 206, San Rafael, California. You can reach out to her office (for appointments etc.) via phone at (415) 925-8865.

Jennifer Grayzar is licensed to practice in California (license number A65858) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1336160530.

Contact Information

Jennifer Grayzar, MD
4000 Civic Center Dr Ste 206,
San Rafael, CA 94903-5233
(415) 925-8865
Not Available

Map and Direction




Physician's Profile

Full NameJennifer Grayzar
GenderFemale
SpecialityEmergency Medicine
Location4000 Civic Center Dr Ste 206, 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: 1336160530
  • Provider Enumeration Date: 07/22/2006
  • Last Update Date: 08/13/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 8729159256
  • Enrollment ID: I20080611000308

Medical Identifiers

Medical identifiers for Jennifer Grayzar such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1336160530NPI-NPPES
00A658580MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine A65858 (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. Jennifer Grayzar allows following entities to bill medicare on her behalf.
Entity NameCep America - California
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1023063542
PECOS PAC ID: 6103739131
Enrollment ID: O20031106000520
Entity NameStat Med Pc A California Medical Professional Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1891132106
PECOS PAC ID: 1850528530
Enrollment ID: O20140204000122

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. Jennifer Grayzar 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
Jennifer Grayzar, MD
2100 Powell St, Suite 900,
Emeryville, CA 94608-1826

Ph: (510) 350-2600		Jennifer Grayzar, MD
4000 Civic Center Dr Ste 206,
San Rafael, CA 94903-5233

Ph: (415) 925-8865

Reviews and Comments


Emergency Medicine Doctors in San Rafael, CA

Kurt Hoyt Kunzel, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 4000 Civic Center Dr, San Rafael, CA 94903
Phone: 209-342-2300    Fax: 209-524-4240
Douglas C. Harris, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 99 Montecillo Rd, San Rafael, CA 94903
Phone: 415-444-2000    
Cynthia Billmeyer Clark, MD
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 4000 Civic Center Dr, San Rafael, CA 94903
Phone: 209-342-2300    Fax: 209-524-4240
Michael J. Sexton, MD
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 99 Montecillo Rd, San Rafael, CA 94903
Phone: 415-444-2000    
Seth M. Peckler, MD
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 99 Montecillo Rd, San Rafael, CA 94903
Phone: 415-444-2000    
Robert J. Stein, DO
Emergency Medicine
Medicare: Accepting Medicare Assignments
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.