Are you John S. Gentry, O.D.? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 2328 Knob Creek Rd, Suite 506, Johnson City, TN 37604
About Dr. Gentry
John S. Gentry, O.D. is an optometrist based in Johnson City, TN. John is a 1981 graduate of Southern College of Optometry. Medicare claims data shows John provided 896 services to 636 patients. The services billed most often include photography of content of eyes, imaging of retina, and established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more. The provider's National Provider Identifier (NPI) is 1871549691.
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) 722-1311
- Email not available
Practice Locations
2328 KNOB CREEK RD SUITE 506
Johnson City, TN 37604
Conditions Commonly Evaluated or Treated
Within Optometry 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
Contact lens issues
Cornea conditions
Corneal issues
Eye conditions
Eye discomfort
Eye diseases
Eye infections
Eye inflammation
Eye injuries
Eye irritation
Eye surface issues
Eyelid conditions
Eyelid issues
Pediatric eye conditions
Pupil issues
Tear duct issues
Vision changes
- Blurry Vision
- Color Blindness
- Distorted Vision
- Double Vision
- Eye Floaters and Flashes
- Eye Strain
- Farsightedness
- Halos Around Lights
- Light Sensitivity
- Night Blindness
- Posterior vitreous detachment
- Tunnel Vision
- Visual Migraines
Procedures & services
Most searched procedures
Contact lens exams
- Bifocal or Multifocal Contact Lens Fitting
- Contact Lens Training
- Plano (Non-Prescription) Colored Contact Lens Exam
- Toric Contact Lens Fitting
Dry eye treatments
Examinations
- Comprehensive medical eye examination
- Diabetic Eye Exam
- DMV Vision Test
- Low Vision Assessment
- Pediatric Eye Exam
Eyelid care
Eyelid treatments
General exams
Glasses and eyewear
- Blue Light Glasses Consultation
- Eyeglass Frame Adjustment and Repair
- Prescription Sunglasses Consultation
- Prism Eyeglasses Fitting
Imaging & tests
- Color Vision Testing
- Corneal topography
- Coronary optical coherence tomography
- Eye-pressure measurement
- Pachymetry
- Retinal photography
- Visual Field Test
Imaging and scans
Minor procedures
Specialty lenses
Surgical evaluations
Tear duct procedures
Therapy
Urgent care
Vision correction
Procedures Most Often Billed to Medicare
896 services · 636 patients · 8 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Photography of content of eyes | Treatment | 92285 |
294 | More than most peers in Optometrist |
| Imaging of retina | Treatment | 92134 |
237 | More than most peers in Optometrist |
| Exam of visual field with extended testing | Treatment | 92083 |
44 | As often as other peers in Optometrist |
| Photography of the retina | Treatment | 92250 |
40 | As often as other peers in Optometrist |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
153 | More often than most peers in Optometrist |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
100 | More often than most peers in Optometrist |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
15 | Less often than most peers in Optometrist |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
13 | Less often than most peers in Optometrist |
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 optometrists at this location 1
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 — 32 related providers in 4 groups
Other optometrists in Johnson City 8
Same specialty, same city.
Trained at Southern College of Optometry 8
Other providers in the same specialty who trained at the same institution.
Class of 1981 at Southern College of Optometry 8
Providers who graduated from the same medical school in the same year.
Also performs Photography of content of eyes 8
Providers in TN who bill this service to Medicare most often.
Common questions
What is John S. Gentry's specialty?
John S. Gentry is an optometrist in Johnson City, TN. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find John S. Gentry?
John S. Gentry is listed at 2328 Knob Creek Rd Suite 506, Johnson City, TN 37604. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact John S. Gentry?
The number on file is (423) 722-1311. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for John S. Gentry?
John S. Gentry's National Provider Identifier is 1871549691. 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 S. Gentry's education?
John S. Gentry attended Southern College of Optometry, graduating in 1981. This comes from the CMS National Downloadable File.
CMS public data
How much experience does John S. Gentry have?
John S. Gentry has 45 years experience. Calculated from a graduation year of 1981, reported in the CMS National Downloadable File.
CMS public data
What is John S. Gentry known for?
According to Medicare billing data, John S. Gentry provides treatments such as photography of content of eyes 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 John S. Gentry's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by John S. Gentry. If this is you, claiming it is free.
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