Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Robert L Singer MD and James N Cohn MD

Organization Ophthalmology Physician · NPI 1902990047

Robert L Singer MD and James N Cohn MD is an Ophthalmology Physician in Fremont, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
Specialties on file
2

Practice location Address checks out

38024 Martha Ave
Fremont, CA 94536
Phone: (510) 791-2233
Fax: (510) 791-0795
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence G3283 (CA)
Ophthalmology Physician Taxonomy 207W00000X · Licence G57505 (CA)

Record details

NPI number1902990047
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official James Cohn — Partner · (510) 791-2233
NPI enumeratedOctober 3, 2006
Last updated in NPPESFebruary 8, 2008
Mailing address38024 Martha Ave, Fremont, CA 94536

Other providers in Fremont