Physician Profile
Andrew G. Iwach, MD
Unclaimed ProfileAbout Dr. Iwach
Andrew G. Iwach, MD is a healthcare provider in San Francisco, CA specializing in ophthalmology. Andrew trained at University of California, Geffen School of Medicine, graduating in 1980. According to Medicare claims data, Andrew cared for 3,806 Medicare patients across 5,338 services. The services billed most often include established patient problem focused exam of visual system, imaging of optic nerve, and exam of visual field with extended testing.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
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
- (415) 981-2020
- Email not available
Practice Locations
55 STEVENSON ST
San Francisco, CA 94105
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
5,338 services · 3,806 patients · 14 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of recurring cataract in lens capsule using a laser | Procedure | 66821 |
45 | As often as other peers in Ophthalmology |
| Dilation of fluid outflow drainage within eye | Procedure | 66174 |
33 | More often than most peers in Ophthalmology |
| Laser repair to improve eye fluid flow | Procedure | 65855 |
21 | Less often than most peers in Ophthalmology |
| Removal of eyelashes using forceps | Procedure | 67820 |
12 | Less often than most peers in Ophthalmology |
| Ultrasound scan of cornea to determine thickness | Imaging | 76514 |
120 | More than most peers in Ophthalmology |
| Established patient problem focused exam of visual system | Treatment | 92012 |
1,493 | More than most peers in Ophthalmology |
| Imaging of optic nerve | Treatment | 92133 |
1,238 | More than most peers in Ophthalmology |
| Exam of visual field with extended testing | Treatment | 92083 |
1,081 | More than most peers in Ophthalmology |
| Established patient complete exam of visual system | Treatment | 92014 |
742 | More often than most peers in Ophthalmology |
| Exam of the internal drainage system of eye | Treatment | 92020 |
290 | 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 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 1
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 32 related providers in 4 groups
Other eye doctors in San Francisco 8
Same specialty, same city.
Trained at University of California, Geffen School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1980 at University of California, Geffen School 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 does Dr. Iwach specialize in?
Dr. Iwach is an eye doctor in San Francisco, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Ophthalmology”.
NPI registry
Where is Dr. Iwach located?
Dr. Iwach is listed at 55 Stevenson St, San Francisco, CA 94105. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Iwach's phone number?
The number on file is (415) 981-2020. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Iwach's NPI number?
Dr. Iwach's National Provider Identifier is 1871682088. 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 Dr. Iwach go to medical school?
Dr. Iwach attended University of California, Geffen School of Medicine, graduating in 1980. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Iwach been practicing?
Dr. Iwach has 46 years experience. Calculated from a graduation year of 1980, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Iwach do most often?
According to Medicare billing data, Dr. Iwach performs procedures including removal of recurring cataract in lens capsule using a laser, dilation of fluid outflow drainage within eye and laser repair to improve eye fluid flow; reads or performs imaging such as ultrasound scan of cornea to determine thickness; provides treatments such as established patient problem focused exam of visual system and imaging of optic nerve. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Iwach confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Iwach. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.