Gerin F River, MD - Medicare Emergency Medicine in Oakland, CA

Gerin F River, MD is a medicare enrolled "Emergency Medicine" physician in Oakland, California. His current practice location is 275 W Macarthur, Oakland, California. You can reach out to his office (for appointments etc.) via phone at (510) 752-1000.

Gerin F River is licensed to practice in California (license number A116048) 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 1831408921.

Contact Information

Gerin F River, MD
275 W Macarthur,
Oakland, CA 94611-5641
(510) 752-1000
Not Available



Physician's Profile

Full NameGerin F River
GenderMale
SpecialityEmergency Medicine
Location275 W Macarthur, Oakland, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1831408921
  • Provider Enumeration Date: 10/07/2010
  • Last Update Date: 01/21/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 6507008117
  • Enrollment ID: I20130812000328

Medical Identifiers

Medical identifiers for Gerin F River such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1831408921NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine A116048 (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. Gerin F River allows following entities to bill medicare on his behalf.
Entity NamePermanente Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1073606299
PECOS PAC ID: 8921910225
Enrollment ID: O20031104000710

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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. Gerin F River 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
Gerin F River, MD
275 W Macarthur,
Oakland, CA 94611-5641

Ph: (510) 752-1000
Gerin F River, MD
275 W Macarthur,
Oakland, CA 94611-5641

Ph: (510) 752-1000

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Emergency Medicine Doctors in Oakland, CA

Daniel Mantuani, M.D.
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 1506 4th Ave Apt 5, Apt 5, Oakland, CA 94606
Phone: 504-390-5474    
Jennifer I. Harris, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 275 W Macarthur, Oakland, CA 94611
Phone: 510-752-1000    
Benjamin J. Bonnes, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 275 W Macarthur Blvd, Oakland, CA 94611
Phone: 510-752-1000    
Richard J. Knight, MD
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 275 W Macarthur Blvd, Oakland, CA 94611
Phone: 510-752-1000    
Michael S. Gelfond, MD
Emergency Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 275 W Macarthur, Oakland, CA 94611
Phone: 510-752-1000    
Dr. Kayla Enriquez, MD
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Medicare: Medicare Enrolled
Practice Location: 1411 E 31st St, Oakland, CA 94602
Phone: 510-437-4564    
Dr. Emily Meilan Sze, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 350 Hawthorne Ave, Oakland, CA 94609
Phone: 510-869-2500    

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