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Edit this profileAt a glance
- 303 W Eaton Ave, Tracy, CA 95376
About Dr. O'neil
Based in Tracy, CA, Thomas C. O'Neil, MD is listed in the NPI registry under ophthalmology. Thomas graduated from University of Iowa, Rj & L Carver College of Medicine in 1978. Medicare claims data shows Thomas provided 756 services to 676 patients. 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, test for allergy using allergenic extract applied to eye, and imaging of retina. NPI 1831162999 identifies this record in the national registry.
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
- (209) 836-1155
- Email not available
Practice Locations
303 W EATON AVE
Tracy, CA 95376
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
- Epiretinal membrane
- Retinal detachment
Eye injuries
Inflammation, neurologic, and orbit
- Thyroid eye disease
- Uveitis
Retina & vitreous
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
Eye injuries
- Eye Scratch Laceration Repair
- Foreign Object Removal from Eye
Eyelid surgery
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
756 services · 676 patients · 11 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Ultrasound scan of cornea to determine thickness | Imaging | 76514 |
34 | As often as other peers in Ophthalmology |
| Test for allergy using allergenic extract applied to eye | Treatment | 95060 |
113 | Too few peers to compare |
| Imaging of retina | Treatment | 92134 |
112 | As often as other peers in Ophthalmology |
| Ct scan of cornea | Treatment | 92025 |
99 | More often than most peers in Ophthalmology |
| Extended exam of the back part of the eye with optic nerve drawing | Treatment | 92202 |
84 | As often as other peers in Ophthalmology |
| Exam of visual field with extended testing | Treatment | 92083 |
42 | Less often than most peers in Ophthalmology |
| Extended exam of the back part of the eye with retinal drawing | Treatment | 92201 |
31 | As often as other peers in Ophthalmology |
| Photography of the retina | Treatment | 92250 |
26 | 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 |
144 | 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 |
39 | 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 2
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 Tracy 3
Same specialty, same city.
Trained at University of Iowa, Rj & L Carver College 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 1978 at University of Iowa, Rj & L Carver College of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Ultrasound scan of cornea to determine thickness 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Dr. O'Neil specialize in?
Dr. O'Neil is an eye doctor in Tracy, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Ophthalmology”.
NPI registry
Where is Dr. O'Neil located?
Dr. O'Neil is listed at 303 W Eaton Ave, Tracy, CA 95376. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. O'Neil's phone number?
The number on file is (209) 836-1155. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. O'Neil?
Dr. O'Neil's National Provider Identifier is 1831162999. 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. O'Neil go to medical school?
Dr. O'Neil attended University of Iowa, Rj & L Carver College of Medicine, graduating in 1978. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. O'Neil have?
Dr. O'Neil has 48 years experience. Calculated from a graduation year of 1978, reported in the CMS National Downloadable File.
CMS public data
What does Dr. O'Neil do most often?
According to Medicare billing data, Dr. O'Neil performs imaging including ultrasound scan of cornea to determine thickness; provides treatments such as test for allergy using allergenic extract applied to eye and imaging of retina, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. O'Neil's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. O'Neil. If this is you, claiming it is free.
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