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Edit this profileAt a glance
- 7320 Shallowford Rd, Chattanooga, TN 37421
About Dr. Prenshaw
John W. Prenshaw, M.D. practices ophthalmology in Chattanooga, TN. John is a 2013 graduate of University of Tennessee, Hsc, College of Medicine. John is also listed as specializing in student in an organized health care education program. Medicare claims data shows John provided 1,588 services to 1,362 patients. The services billed most often include new patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more, removal of cataract with insertion of prosthetic lens, and measurement of corneal curvature and depth of eye. The provider's National Provider Identifier (NPI) is 1164869475.
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
- (423) 894-5300
- Email not available
Practice Locations
7320 SHALLOWFORD RD
Chattanooga, TN 37421
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
1,588 services · 1,362 patients · 16 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of cataract with insertion of prosthetic lens | Procedure | 66984 |
365 | More often than most peers in Ophthalmology |
| Removal of recurring cataract in lens capsule using a laser | Procedure | 66821 |
133 | More often than most peers in Ophthalmology |
| Laser repair to improve eye fluid flow | Procedure | 65855 |
38 | More often than most peers in Ophthalmology |
| Complex removal of cataract with insertion of prosthetic lens | Procedure | 66982 |
34 | More often than most peers in Ophthalmology |
| Extracapsular removal of cataract with insertion of artificial lens and insertion of drainage device in front chamber of eye | Procedure | 66991 |
24 | As often as other peers in Ophthalmology |
| Measurement of corneal curvature and depth of eye | Treatment | 92136 |
269 | More often than most peers in Ophthalmology |
| Ct scan of cornea | Treatment | 92025 |
106 | More often than most peers in Ophthalmology |
| Exam of the internal drainage system of eye | Treatment | 92020 |
55 | As often as other peers in Ophthalmology |
| Imaging of retina | Treatment | 92134 |
29 | Less often than most peers in Ophthalmology |
| Imaging of optic nerve | Treatment | 92133 |
21 | 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.
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 3
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 Chattanooga 8
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at University of Tennessee, Hsc, College of Medicine 7
Other providers in the same specialty who trained at the same institution.
Class of 2013 at University of Tennessee, Hsc, College of Medicine 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 TN who bill this service to Medicare most often.
Common questions
What is John W. Prenshaw's specialty?
John W. Prenshaw is an eye doctor in Chattanooga, TN. That is the designation recorded for this NPI in the federal registry, where it is listed as “Ophthalmology”.
NPI registry
Where can I find John W. Prenshaw?
John W. Prenshaw is listed at 7320 Shallowford Rd, Chattanooga, TN 37421. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact John W. Prenshaw?
The number on file is (423) 894-5300. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for John W. Prenshaw?
John W. Prenshaw's National Provider Identifier is 1164869475. 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 John W. Prenshaw's education?
John W. Prenshaw attended University of Tennessee, Hsc, College of Medicine, graduating in 2013. This comes from the CMS National Downloadable File.
CMS public data
How much experience does John W. Prenshaw have?
John W. Prenshaw has 13 years experience. Calculated from a graduation year of 2013, reported in the CMS National Downloadable File.
CMS public data
What is John W. Prenshaw known for?
According to Medicare billing data, John W. Prenshaw performs procedures including removal of cataract with insertion of prosthetic lens, removal of recurring cataract in lens capsule using a laser and laser repair to improve eye fluid flow; provides treatments such as measurement of corneal curvature and depth of eye and ct scan of cornea, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is John W. Prenshaw's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by John W. Prenshaw. If this is you, claiming it is free.
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