Dr James N Cohn, MD - Medicare Ophthalmology in Fremont, CA

Dr James N Cohn, MD is a medicare enrolled "Ophthalmology" physician in Fremont, California. He went to University Of Chicago, Pritzker School Of Medicine and graduated in 1982 and has 42 years of diverse experience with area of expertise as Ophthalmology. His current practice location is 3775 Beacon Ave, Suite 140, Fremont, California. You can reach out to his office (for appointments etc.) via phone at (510) 791-2233.

Dr James N Cohn is licensed to practice in California (license number G57505) 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 1043304173.

Contact Information

Dr James N Cohn, MD
3775 Beacon Ave, Suite 140,
Fremont, CA 94538-1465
(510) 791-2233
(510) 791-0795

Map and Direction




Physician's Profile

Full NameDr James N Cohn
GenderMale
SpecialityOphthalmology
Experience42 Years
Location3775 Beacon Ave, Fremont, 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 James N Cohn attended and graduated from University Of Chicago, Pritzker School Of Medicine in 1982
  NPI Data:
  • NPI Number: 1043304173
  • Provider Enumeration Date: 10/03/2006
  • Last Update Date: 12/19/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 6709941727
  • Enrollment ID: I20090206000548

Medical Identifiers

Medical identifiers for Dr James N Cohn such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1043304173NPI-NPPES
1891025813MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207W00000XOphthalmology G57505 (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 James N Cohn 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
Entity NameJames N Cohn Md Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1891025813
PECOS PAC ID: 9830215011
Enrollment ID: O20100924000690

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 James N Cohn 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 James N Cohn, MD
3775 Beacon Ave, Suite 140,
Fremont, CA 94538-1465

Ph: (510) 791-2233
Dr James N Cohn, MD
3775 Beacon Ave, Suite 140,
Fremont, CA 94538-1465

Ph: (510) 791-2233

Reviews and Comments


Ophthalmology Doctors in Fremont, CA

Mrs. Maskeen K Sabharwal, MD
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Medicare: Accepting Medicare Assignments
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Phone: 510-793-2020    Fax: 510-793-0384
James J. Song, M.D.
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Practice Location: 2299 Mowry Ave, Suite 3a, Fremont, CA 94538
Phone: 510-713-9898    Fax: 510-280-7279
Amelia Chen Sheh, MD
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Practice Location: 3200 Kearney St, Fremont, CA 94538
Phone: 510-498-2857    
Audrey Chow, MD
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Medicare: Medicare Enrolled
Practice Location: 3200 Kearney St, Fremont, CA 94538
Phone: 510-498-2857    
Taliva Donley Martin, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 3200 Kearney St., Fremont, CA 94538
Phone: 510-490-1222    Fax: 510-498-2685
Dr. Jay Mehta, M.D.
Ophthalmology
Medicare: Not Enrolled in Medicare
Practice Location: 39263 Mission Blvd., Fremont, CA 94536
Phone: 510-796-4500    Fax: 510-796-4574

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.