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Edit this profileAt a glance
- 795 El Camino Real, Palo Alto, CA 94301
About Dr. Ahn
James Ahn, M.D. is a healthcare provider in Palo Alto, CA specializing in ophthalmology. James trained at Boston University School of Medicine, graduating in 1982. According to Medicare claims data, James cared for 190 Medicare patients across 212 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, imaging of optic nerve, and exam to measure eye deviation and range of motion. This provider record is associated with NPI 1902915028.
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
- (650) 321-4121
- Email not available
Practice Locations
795 EL CAMINO REAL
Palo Alto, CA 94301
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
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
Eye injuries
Inflammation, neurologic, and orbit
Retina & vitreous
Procedures & services
Most searched procedures
Examination and imaging
Cataract and lens
Corneal procedures
Eye diagnostics
Eye injuries
Eyelid surgery
Eyelid, tear duct, and muscle
Glaucoma
- Glaucoma drainage-device implantation
- Laser peripheral iridotomy
- Minimally invasive glaucoma surgery
- Selective laser trabeculoplasty
Laser eye surgery
Laser procedures
Laser vision correction
Refractive surgery
Tear duct & Orbit
Procedures Most Often Billed to Medicare
212 services · 190 patients · 6 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Imaging of optic nerve | Treatment | 92133 |
40 | Less often than most peers in Ophthalmology |
| Exam to measure eye deviation and range of motion | Treatment | 92060 |
26 | As often as other peers in Ophthalmology |
| Exam of visual field with extended testing | Treatment | 92083 |
16 | Less often than most peers in Ophthalmology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
85 | As often as other peers in Ophthalmology |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
23 | As often as other peers in Ophthalmology |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
22 | Less often 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.
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.
Other eye doctors in Palo Alto 8
Same specialty, same city.
Trained at Boston University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1982 at Boston University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Imaging of optic nerve 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does James Ahn specialize in?
James Ahn is an eye doctor in Palo Alto, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Ophthalmology”.
NPI registry
Where is James Ahn located?
James Ahn is listed at 795 El Camino Real, Palo Alto, CA 94301. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is James Ahn's phone number?
The number on file is (650) 321-4121. Contact the office directly to confirm availability and scheduling.
NPI registry
What is James Ahn's NPI number?
James Ahn's National Provider Identifier is 1902915028. 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
Where did James Ahn train?
James Ahn attended Boston University School of Medicine, graduating in 1982. This comes from the CMS National Downloadable File.
CMS public data
How long has James Ahn been practicing?
James Ahn has 44 years experience. Calculated from a graduation year of 1982, reported in the CMS National Downloadable File.
CMS public data
What does James Ahn do most often?
According to Medicare billing data, James Ahn provides treatments such as imaging of optic nerve and exam to measure eye deviation and range of motion, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has James Ahn confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by James Ahn. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.