Physician Profile
Michael J. Drinnan, MD
Unclaimed ProfileAbout Dr. Drinnan
Michael J. Drinnan, MD is a healthcare provider in San Mateo, CA specializing in ophthalmology. According to Medicare claims data, Michael cared for 1,023 Medicare patients across 1,107 services. The services billed most often include established patient complete exam of visual system, photography of the retina, and measurement of corneal curvature and depth of eye.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (650) 342-7474
- Email not available
Practice Locations
101 S SAN MATEO DR SUITE 310
San Mateo, CA 94401
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
- Cataracts
- Diabetic retinopathy
- Dry eye
- Glaucoma
- Macular degeneration
Cornea and external eye
- Blepharitis
- Corneal abrasion
- Corneal ulcer
- Keratoconus
- Pink eye
- Pterygium
Eyelid and tear drainage
- Blocked tear duct
- Chalazion
- Drooping eyelid
Refractive and focusing
- Astigmatism
- Eye misalignment (strabismus)
- Farsightedness
- Lazy eye (amblyopia)
- Nearsightedness
- Presbyopia
Retina and vitreous
- Epiretinal membrane
- Retinal detachment
Eye injuries
- Foreign Object in Eye
Inflammation, neurologic, and orbit
- Thyroid eye disease
- Uveitis
Retina & vitreous
- Eye Floaters and Flashes
Procedures & services
Most searched procedures
- Cataract surgery
- Eye exam
- LASIK
- Retina surgery
Examination and imaging
- Corneal topography
- Fluorescein angiography
Cataract and lens
- Intraocular lens exchange
- YAG laser capsulotomy
Corneal procedures
- Amniotic Membrane Eye Graft
Eye diagnostics
- Optical Coherence Tomography Scan
Eye injuries
- Eye Scratch Laceration Repair
- Foreign Object Removal from Eye
Eyelid surgery
- Stye Removal
Eyelid, tear duct, and muscle
- Drooping-eyelid repair
- Entropion repair
- Eye-muscle surgery
- Eyelid surgery
- Tear-duct bypass surgery
Glaucoma
- Glaucoma drainage-device implantation
- Laser peripheral iridotomy
- Minimally invasive glaucoma surgery
- Selective laser trabeculoplasty
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
1,107 services · 1,023 patients · 13 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Removal of cataract with insertion of prosthetic lens | Procedure | 66984 |
75 |
| Removal of recurring cataract in lens capsule using a laser | Procedure | 66821 |
29 |
| Complex removal of cataract with insertion of prosthetic lens | Procedure | 66982 |
21 |
| Established patient complete exam of visual system | Treatment | 92014 |
340 |
| Photography of the retina | Treatment | 92250 |
208 |
| Measurement of corneal curvature and depth of eye | Treatment | 92136 |
137 |
| Established patient problem focused exam of visual system | Treatment | 92012 |
91 |
| Exam of visual field with extended testing | Treatment | 92083 |
48 |
| New patient complete exam of visual system | Treatment | 92004 |
41 |
| Imaging of optic nerve | Treatment | 92133 |
39 |
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 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 — 30 related providers in 4 groups
Other eye doctors in San Mateo 6
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1982 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of cataract with insertion of prosthetic lens 8
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Drinnan?
Dr. Drinnan is an eye doctor in San Mateo, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Ophthalmology”.
NPI registry
What is Dr. Drinnan's address?
Dr. Drinnan is listed at 101 S San Mateo Dr Suite 310, San Mateo, CA 94401. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Drinnan?
The number on file is (650) 342-7474. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Drinnan's NPI number?
Dr. Drinnan's National Provider Identifier is 1609883024. 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. Drinnan train?
Dr. Drinnan attended Other, graduating in 1982. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Drinnan been practicing?
Dr. Drinnan has 44 years experience. Calculated from a graduation year of 1982, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Drinnan perform?
According to Medicare billing data, Dr. Drinnan performs procedures including removal of cataract with insertion of prosthetic lens, removal of recurring cataract in lens capsule using a laser and complex removal of cataract with insertion of prosthetic lens; provides treatments such as established patient complete exam of visual system and photography of the retina, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Drinnan confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Drinnan. 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.