Dr. Michael Drew Karon , MD, PhD
Ophthalmology β’ Frisco, TX
6325 Orchard Park Dr
Frisco, TX 750345125
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on July 14, 2009; this date does not establish years in practice.
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Published CMS data list 322 Medicare Part D prescriptions, including refills, in 2016.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2016. Published rows only; this is not a quality measure.
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Published Part D records, 2016:
- Latanoprost β 58 prescription fills, including refills.
- Prolensa (Bromfenac Sodium) β 38 prescription fills, including refills.
- Travatan Z (Travoprost) β 37 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2016. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 12 records in the table Β· Guide: How to read Medicare Part D prescriber data
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Medicare Part D prescriptions went from 167 in 2013 to 322 in 2016.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2013β2016.
Practice Location & Contact Primary Location
6325 Orchard Park Dr
Frisco, TX 750345125
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Ophthalmology: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
439 standardized 30-day fills in 2016
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$50,965 in 2016
The total cost of these prescriptions in 2016, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2016.
Open Payments general payments, program year 2019
All general payments: $212.09 across 4 records.
By nature of payment
- Food and Beverage: $212.09 across 4 records.
Reporting-company totals
- Alcon Vision LLC: $85.00 across 2 records.
- Johnson & Johnson Surgical Vision, Inc.: $74.49 across 1 record.
- Bausch Health Americas, Inc.: $52.60 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2019 (published June 30, 2026).
NPI first issued
2009
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, βDoes your provider accept Medicare as full payment?β
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Compared with the same specialty in Frisco and Texas
Billing and prescribing volume is not a quality rating.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Karon are from 2016.
5 active clinicians are listed under Ophthalmology with a practice address in Frisco, TX (1,517 in Texas).
Addresses are self-reported to NPPES and may be out of date.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 93% from 167 in 2013 to 322 in 2016.
- 2013: 167
- 2014: 719
- 2015: 540
- 2016: 322
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30-day fills
30-day fills increased 124% from 196 in 2013 to 439 in 2016.
- 2013: 196
- 2014: 908
- 2015: 620
- 2016: 439
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Part D drug cost
Part D drug cost increased 391% from $10,381 in 2013 to $50,965 in 2016.
- 2013: $10,381
- 2014: $55,992
- 2015: $63,094
- 2016: $50,965
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Industry payments (Open Payments)
CMS data for industry payments (Open Payments) are available for 2019 only.
Sources: CMS Medicare Part D Prescribers (2016), CMS Open Payments (2019), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2019 (payments made January 1 β December 31, 2019): fewer than 11 records totaling $212.09.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Johnson & Johnson Surgical Vision, Inc. |
Food and Beverage
In-kind items and services
|
Tecnis 1-piece IOL | General | $74.49 |
| Bausch Health Americas, Inc. |
Food and Beverage
In-kind items and services
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VICTUS | General | $52.60 |
| Alcon Vision LLC |
Food and Beverage
In-kind items and services
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β | General | $45.00 |
| Alcon Vision LLC |
Food and Beverage
In-kind items and services
|
β | General | $40.00 |
Source: CMS Open Payments, program year 2019, released June 30, 2026.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2016.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Latanoprost | Latanoprost | 58 | 2,887 | $972.77 | 17 |
| Prolensa | Bromfenac Sodium | 38 | 1,031 | $8,127.41 | 28 |
| Travatan Z | Travoprost | 37 | 1,241 | $7,159.31 | 11 |
| Combigan | Brimonidine Tartrate/Timolol | 30 | 844 | $4,458.31 | β |
| Vigamox | Moxifloxacin Hcl | 29 | 383 | $4,309.52 | 23 |
| Erythromycin | Erythromycin Base | 23 | 199 | $216.25 | 16 |
| Prednisolone Acetate | Prednisolone Acetate | 22 | 666 | $909.55 | β |
| Alphagan P | Brimonidine Tartrate | 20 | 490 | $2,479.12 | β |
| Restasis | Cyclosporine | 17 | 1,290 | $16,172.23 | β |
| Durezol | Difluprednate | 17 | 370 | $2,772.16 | 15 |
| Timolol Maleate | Timolol Maleate | 16 | 1,016 | $713.21 | β |
| Lumigan | Bimatoprost | 15 | 473 | $2,675.61 | β |
Source: CMS Part D by Provider and Drug, 2016; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 207W00000X
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.
NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
NPI status registered as active in NPPES database
Registered at 6325 ORCHARD PARK DR, FRISCO, TX 750345125 (Tel: 5042514115)
Registered at 6325 ORCHARD PARK DR, FRISCO, TX 750345125
Recorded as MICHAEL KARON, M.D, PHD
Internal Medicine (license number reported to NPPES: MA 241707)
NPI status registered as active in NPPES database
Registered at 2709 VIRGINIA PKWY STE 200, MCKINNEY, TX 750715400 (Tel: 9725482015)
Registered at 2709 VIRGINIA PKWY STE 200, MCKINNEY, TX 750715400 (Tel: 9725482015)
Recorded as MICHAEL KARON, M.D, PHD
Internal Medicine (license number reported to NPPES: MA 241707)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Ophthalmology Specialists in Frisco
Healthcare providers in FriscoMailing Address
6325 Orchard Park Dr
Frisco, TX 750345125