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Edit this profileAt a glance
- 400 Sierra College Dr, Suite A, Grass Valley, CA 95945
About Dr. Mercer
Keith B. Mercer, M.D. practices ophthalmology in Grass Valley, CA. Keith is a 1977 graduate of University of California, Irvine, California College of Medicine. Medicare claims data shows Keith provided 2,642 services to 2,316 patients. The services billed most often include established patient complete exam of visual system, established patient problem focused exam of visual system, and imaging of optic nerve. The provider's National Provider Identifier (NPI) is 1568543049.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (530) 272-3411
- Email not available
Practice Locations
400 SIERRA COLLEGE DR SUITE A
Grass Valley, CA 95945
Conditions Commonly Evaluated or Treated
Within Ophthalmology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Eye injury and cancer
- Chemical injury to the eye
- Foreign body in the eye
- Hyphema
- Open-globe eye injury
Inflammation, neurologic, and orbit
- Optic neuritis
- Optic neuropathy
- Orbital cellulitis
- Thyroid eye disease
- Uveitis
Most searched conditions
Cornea and external eye
Eyelid and tear drainage
Refractive and focusing
- Astigmatism
- Eye misalignment (strabismus)
- Farsightedness
- Lazy eye (amblyopia)
- Nearsightedness
- Presbyopia
Retina and vitreous
- Epiretinal membrane
- Retinal detachment
Eye injuries
Retina & vitreous
Procedures & services
Cataract and lens
- Cataract surgery with lens implant
- Laser-assisted cataract surgery
- Intraocular lens exchange
- YAG laser capsulotomy
Cornea and refractive
- Endothelial corneal transplant
Emergency and minor
- Corneal rust-ring removal
- Removal of an eye foreign body
- Repair of an eye or eyelid laceration
- Repair of ruptured globe
Examination and imaging
- Eye ultrasound
- Slit-lamp examination
- Visual-field testing
- Corneal topography
- Fluorescein angiography
Eyelid, tear duct, and muscle
- Chalazion removal
- Ectropion repair
- Eyelid surgery
- Tear-duct probing
- Drooping-eyelid repair
- Entropion repair
- Eye-muscle surgery
- Tear-duct bypass surgery
Glaucoma
- Cyclophotocoagulation
- Trabeculectomy
- Glaucoma drainage-device implantation
- Laser peripheral iridotomy
- Minimally invasive glaucoma surgery
- Selective laser trabeculoplasty
Retina
- Macular hole surgery
- Pneumatic retinopexy
- Retinal laser treatment
- Scleral buckle surgery
- Vitrectomy
Most searched procedures
- Cataract surgery
- Eye exam
- LASIK
- Retina surgery
Corneal procedures
- Amniotic Membrane Eye Graft
Eye diagnostics
Eye injuries
- Eye Scratch Laceration Repair
- Foreign Object Removal from Eye
Eyelid surgery
Laser eye surgery
- Laser Floater Removal
Laser procedures
- Laser Treatment for Retinal Tear
Laser vision correction
- SMILE Eye Surgery
Refractive surgery
- Clear Lens Exchange
- Implantable Contact Lenses
Tear duct & Orbit
- Orbital Decompression Surgery
- Tear Duct Plugs
Procedures Most Often Billed to Medicare
2,642 services · 2,316 patients · 9 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of recurring cataract in lens capsule using a laser | Procedure | 66821 |
38 | As often as other peers in Ophthalmology |
| Ultrasound scan of cornea to determine thickness | Imaging | 76514 |
15 | Less often than most peers in Ophthalmology |
| Established patient complete exam of visual system | Treatment | 92014 |
976 | More often than most peers in Ophthalmology |
| Established patient problem focused exam of visual system | Treatment | 92012 |
752 | More than most peers in Ophthalmology |
| Imaging of optic nerve | Treatment | 92133 |
376 | More often than most peers in Ophthalmology |
| New patient complete exam of visual system | Treatment | 92004 |
178 | More than most peers in Ophthalmology |
| Imaging of retina | Treatment | 92134 |
132 | As often as other peers in Ophthalmology |
| Exam of visual field with extended testing | Treatment | 92083 |
122 | As often as other peers in Ophthalmology |
| New patient problem focused exam of visual system | Treatment | 92002 |
53 | More than most peers in Ophthalmology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other eye doctors at this location 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 3
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 24 related providers in 3 groups
Trained at University of California, Irvine, California College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1977 at University of California, Irvine, California College of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of recurring cataract in lens capsule using a laser 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Keith B. Mercer's specialty?
Keith B. Mercer is an eye doctor in Grass Valley, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Ophthalmology”.
NPI registry
Where can I find Keith B. Mercer?
Keith B. Mercer is listed at 400 Sierra College Dr Suite A, Grass Valley, CA 95945. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Keith B. Mercer?
The number on file is (530) 272-3411. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Keith B. Mercer?
Keith B. Mercer's National Provider Identifier is 1568543049. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Keith B. Mercer's education?
Keith B. Mercer attended University of California, Irvine, California College of Medicine, graduating in 1977. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Keith B. Mercer have?
Keith B. Mercer has 49 years experience. Calculated from a graduation year of 1977, reported in the CMS National Downloadable File.
CMS public data
What is Keith B. Mercer known for?
According to Medicare billing data, Keith B. Mercer performs procedures including removal of recurring cataract in lens capsule using a laser; reads or performs imaging such as ultrasound scan of cornea to determine thickness; provides treatments such as established patient complete exam of visual system and established patient problem focused exam of visual system. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Keith B. Mercer's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Keith B. Mercer. If this is you, claiming it is free.
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