Thomas James Markus, OD
- Medicare patients, 2024
- 425
- Part D claims, 2024
- 1,065
- MIPS score, 2024
- 75
- Industry payments
- $266
- Affiliated sites
- 1
- Practice address
- 13333 Dotson Rd, Houston, TX 77070
- Practice phone
- Call (281) 890-1784
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
1960 Eye Surgeons, P.A.
Houston, Texas
Find Thomas Markus' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Thomas James Markus is an optometrist in Houston, Texas
Thomas Markus practices at 1960 Eye Surgeons, P.A. in Houston, Texas.
Thomas Markus' NPI, 1467419903, was assigned on April 27, 2006. Thomas Markus graduated from University of Houston - College of Optometry in 1994. Thomas Markus holds Texas license 4998TG.
- NPI
- 1467419903NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9032159355
- NPI enumeration date
- April 27, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (281) 890-1784
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Thomas James Markus practices at 1960 Eye Surgeons, P.A. in Houston, Texas
Thomas Markus' primary practice is 1960 Eye Surgeons, P.A., at 13333 Dotson Rd, Houston, TX 77070 in Harris County. The practice phone is (281) 890-1784.
- 1960 Eye Surgeons, P.A.13333 Dotson Rd, Houston, TX 77070 · Harris CountyPhone(281) 890-1784
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Thomas James Markus is affiliated with 2 sites of care and 1 medical group
Thomas Markus' primary practice is 1960 Eye Surgeons, P.A. in Houston, Texas. Dmand AI also links Thomas Markus to 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Thomas James Markus' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Thomas Markus practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| 1960 Eye Surgeons, P.A. | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Thomas James Markus is one of 3,272 optometrists in Texas
Optometrist is Thomas Markus' primary specialty in the NPI Registry, under taxonomy code 152W00000X. Thomas Markus is licensed in Texas.
Specialties and state licenses
- Optometrist, TexasPrimary
Optometrists near Thomas Markus
Counts of optometrists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Thomas James Markus treated 425 Medicare patients in 2024, average age 77
CMS counts 425 Medicare patients who saw Thomas Markus in 2024. The largest group is 75 to 84, with 195 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.11, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Thomas Markus' median patient age at 74, with 58% women.
Thomas Markus' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Thomas Markus' Medicare patients by sex, 2024
- Women26362%
- Men16238%
Chronic conditions among Thomas Markus' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis46%
- Ischemic heart disease34%
- Diabetes31%
- Osteoporosis24%
- Anxiety21%
- Cancer20%
Share of Medicare patients with each condition. A patient can have several.
Thomas Markus' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women58%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Thomas James Markus wrote 1,065 Medicare Part D claims in 2024
In 2024, Thomas Markus wrote 1,065 Medicare Part D claims for 249 patients. 60% of them were for generic drugs.
Thomas Markus' Part D claims by kind of drug, 2024
- Generic634 claims60%
- Brand-name431 claims40%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Thomas James Markus scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Thomas Markus for performance year 2024, reported as part of a group. Thomas Markus accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
- MIPS final score, 2024
- 75 of 100
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Thomas James Markus received $266 in industry payments in 2025
CMS Open Payments shows 10 general payments to Thomas Markus from 7 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Alcon Laboratories Inc paid the most, $87.
Companies that paid Thomas Markus the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Thomas James Markus graduated from University of Houston - College of Optometry
Thomas Markus graduated from University of Houston - College of Optometry in 1994.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Thomas James Markus's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Thomas James Markus
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Thomas James Markus' NPI number?
Thomas James Markus' NPI number is 1467419903. It was assigned on April 27, 2006, and it is active in the NPI Registry.
What does Thomas James Markus specialize in?
Thomas James Markus is an optometrist in Houston, Texas. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Thomas James Markus practice?
Thomas Markus practices at 13333 Dotson Rd, Houston, TX 77070. Thomas Markus' primary practice is 1960 Eye Surgeons, P.A. in Houston, Texas. Dmand AI also links Thomas Markus to 1 group practice or clinic and 1 medical group.
What is Thomas James Markus' office phone number?
The practice phone on file for Thomas Markus is (281) 890-1784.
What is Thomas James Markus' medical license number?
Thomas Markus holds Texas license 4998TG.
Does Thomas James Markus accept Medicare?
Yes. CMS lists Thomas Markus as accepting Medicare assignment.
What is Thomas James Markus' MIPS score?
Thomas Markus' MIPS final score for performance year 2024 is 75 out of 100, reported as part of a group.
How many Medicare patients does Thomas James Markus see?
CMS counts 425 Medicare patients who saw Thomas Markus in 2024, with an average age of 77.
Where did Thomas James Markus go to medical school?
Thomas Markus graduated from University of Houston - College of Optometry in 1994.
Has Thomas James Markus received payments from drug or device companies?
CMS Open Payments shows $266 in general payments to Thomas Markus from 7 companies from 2025 to 2025. The largest total came from Alcon Laboratories Inc.
How long has Thomas James Markus been practicing?
Thomas Markus graduated from medical school in 1994, 32 years ago.
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