Dr Lewis Gamarra, MD - Medicare Hospitalist in Emeryville, CA

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Dr Lewis Gamarra, MD is a medicare enrolled "Hospitalist" physician in Emeryville, California. He went to Medical College Of Wisconsin and graduated in 1988 and has 38 years of diverse experience with area of expertise as Hospitalist. His current practice location is 2100 Powell St Ste 400, Emeryville, California. You can reach out to his office (for appointments etc.) via phone at (510) 851-7501.

Dr Lewis Gamarra is licensed to practice in California (license number G70417) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1124048608.

Contact Information

Dr Lewis Gamarra, MD
2100 Powell St Ste 400,
Emeryville, CA 94608-1872
(510) 851-7501
(510) 851-7446

Map and Direction




Physician's Profile

Full NameDr Lewis Gamarra
GenderMale
SpecialityHospitalist
Experience38 Years
Location2100 Powell St Ste 400, Emeryville, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Lewis Gamarra attended and graduated from Medical College Of Wisconsin in 1988
  NPI Data:
  • NPI Number: 1124048608
  • Provider Enumeration Date: 07/20/2006
  • Last Update Date: 01/11/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 5294861167
  • Enrollment ID: I20100330000779

Medical Identifiers

Medical identifiers for Dr Lewis Gamarra such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1124048608NPI-NPPES
00G704170MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine G70417 (California)Secondary
208M00000XHospitalist 70417 (California)Secondary
208M00000XHospitalist G70417 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
French Hospital Medical CenterSan luis obispo, CAHospital
Sierra Vista Regional Medical CenterSan luis obispo, CAHospital

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 Lewis Gamarra allows following entities to bill medicare on his behalf.
Entity NameHospital Medicine Of California Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1770037236
PECOS PAC ID: 4688952906
Enrollment ID: O20161020001556
Entity NameVituity Hospitalists Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1730666108
PECOS PAC ID: 2567714090
Enrollment ID: O20181011001813
Entity NameLewis Gamarra Md Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1164010492
PECOS PAC ID: 7618382631
Enrollment ID: O20210224001130

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 Lewis Gamarra 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 Lewis Gamarra, MD
2100 Powell St Ste 400,
Emeryville, CA 94608-1872

Ph: (510) 851-7501		Dr Lewis Gamarra, MD
2100 Powell St Ste 400,
Emeryville, CA 94608-1872

Ph: (510) 851-7501

Reviews and Comments


Hospitalist Doctors in Emeryville, CA

Michael B Hajduk, MD
Hospitalist
Medicare: Accepting Medicare Assignments
Practice Location: 2100 Powell St Ste 400, Emeryville, CA 94608
Phone: 510-851-7501    Fax: 510-851-7446
Aaron N Smith,
Hospitalist
Medicare: Accepting Medicare Assignments
Practice Location: 2100 Powell St, Suite 920, Emeryville, CA 94608
Phone: 510-350-2777    
Suneetha Madhu, M.D.
Hospitalist
Medicare: Accepting Medicare Assignments
Practice Location: 2100 Powell St Ste 400, Emeryville, CA 94608
Phone: 510-851-7501    Fax: 510-851-7446

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.