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

Dr. Keith Barclay Mercer, MD

Individual provider Ophthalmology Physician · NPI 1568543049

Dr. Keith Barclay Mercer, MD is an Ophthalmology in Grass Valley, California. Graduated from University of California, Irvine, California College of Medicine in 1977, 49 years ago. Practices with Sierra View Medical Eye Inc, a 6-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
49
Trained at
University of California, Irvine, California College of Medicine
Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

400 Sierra College Dr Ste A
Grass Valley, CA 95945-5089
Phone: (530) 272-3411
Fax: (530) 272-3474
Show map & directions

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

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence G37695 (CA)

Record details

NPI number1568543049
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 18, 2006
Last updated in NPPESJanuary 10, 2013

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyOPHTHALMOLOGY
Medical schoolUNIVERSITY OF CALIFORNIA, IRVINE, CALIFORNIA COLLEGE OF MEDICINE
Graduated 1977 (49 years in practice)
Group practice Sierra View Medical Eye Inc — 6 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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