Active NPI 1467419903 Individual Practitioner Male Practitioner

Dr. Thomas James Markus , OD

Optometrist • Houston, TX

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Thomas Markus, OD is a certified Optometrist practicing in Houston, TX. With approximately 32 years of clinical experience since graduating from University Of Houston - College Of Optometry in 1994, Dr. Markus delivers high-quality medical care to the local community at 13333 DOTSON RD..

Dr. Markus is affiliated with 1960 Eye Surgeons, P.A. and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient problem focused exam of visual system, imaging of retina, photography of the retina. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

13333 Dotson Rd.
Suite 200

Houston, TX 770704305

Telephone 2818901784

Fax 2818905733

Associated Practice Facility / Clinic

🏢 1960 Eye Surgeons, P.a. Facility NPI 1295817609

Medicare Profile & Education

Medical School

University Of Houston - College Of Optometry

Graduation Year

1994

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Optometrist in Houston, TX

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

32 Yrs +14.1 yrs vs City Avg

City Avg: 17.9 Yrs

State Avg: 19.5 Yrs

Regional Practice Density

791 Specialists

Practicing in Houston, TX (5156 Statewide)

Telehealth Adoption Rate

0.1% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

53.2% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Markus (32 Years) 32 Yrs

Houston Specialty Average (17.9 Years) 17.9 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92012 Established patient problem focused exam of visual system	744	359	$95.00	$83.96
92134 Imaging of retina	407	281	$90.00	$37.59
92250 Photography of the retina	278	260	$180.00	$34.94
92014 Established patient complete exam of visual system	254	252	$160.00	$118.99
92083 Exam of visual field with extended testing	219	180	$150.00	$59.70
92133 Imaging of optic nerve	186	164	$90.00	$32.56
83861 Microfluid analysis of tears	129	40	$35.00	$22.03
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	110	86	$198.40	$119.88
92132 Imaging of front third of eye	21	19	$90.00	$26.88
76514 Ultrasound scan of cornea to determine thickness	14	14	$80.00	$10.17

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92012 Established patient problem focused exam of visual system	767	379	$95.00	$91.01
92134 Imaging of retina	355	270	$90.00	$40.27
92250 Photography of the retina	318	301	$180.00	$37.61
92014 Established patient complete exam of visual system	284	280	$160.00	$126.98
92083 Exam of visual field with extended testing	212	174	$150.00	$63.22
92133 Imaging of optic nerve	209	189	$90.00	$35.14
83861 Microfluid analysis of tears	82	31	$35.00	$22.03
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	47	41	$200.00	$129.60
67820 Removal of eyelashes using forceps	34	16	$264.41	$23.78
92132 Imaging of front third of eye	33	27	$90.00	$29.55
76514 Ultrasound scan of cornea to determine thickness	32	31	$80.00	$11.01
92136 Measurement of corneal curvature and depth of eye	29	18	$180.00	$25.89
92004 New patient complete exam of visual system	26	26	$180.00	$151.41
92499 Service or surgery of the eye	14	12	$600.00	$37.69
92273 Full field recording of retinal electrical responses to external stimuli with interpretation and report	13	13	$300.00	$128.68
92025 Ct scan of cornea	13	12	$225.00	$36.85

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92012 Established patient problem focused exam of visual system	774	382	$95.00	$92.16
92134 Imaging of retina	399	296	$90.00	$41.26
92250 Photography of the retina	299	276	$180.00	$38.09
92014 Established patient complete exam of visual system	267	262	$160.00	$130.56
92083 Exam of visual field with extended testing	225	180	$150.00	$64.34
92133 Imaging of optic nerve	195	174	$90.00	$35.88
83861 Microfluid analysis of tears	101	42	$35.00	$22.13
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	56	44	$200.00	$131.53
92273 Full field recording of retinal electrical responses to external stimuli with interpretation and report	45	37	$300.00	$131.13
67820 Removal of eyelashes using forceps	38	15	$270.00	$23.09
92136 Measurement of corneal curvature and depth of eye	37	24	$180.00	$32.14
76514 Ultrasound scan of cornea to determine thickness	31	31	$80.00	$11.27
92004 New patient complete exam of visual system	28	28	$180.00	$155.00
92132 Imaging of front third of eye	24	21	$90.00	$29.52
95930 Measurement of nerve conduction using visual stimulation testing with report	23	19	$250.00	$68.15
92499 Service or surgery of the eye	19	18	$600.00	$38.42
68761 Closure of tear duct opening using plug	15	11	$338.00	$208.89
99213 Established patient office or other outpatient visit, typically 15 minutes	14	12	$200.00	$93.71

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92012 Established patient problem focused exam of visual system	675	342	$95.00	$92.95
92134 Imaging of retina	431	280	$90.00	$42.04
92250 Photography of the retina	284	270	$180.00	$40.52
92014 Established patient complete exam of visual system	266	261	$160.00	$132.05
92083 Exam of visual field with extended testing	215	173	$150.00	$65.26
92133 Imaging of optic nerve	196	176	$90.00	$36.49
83861 Microfluid analysis of tears	167	61	$35.00	$22.48
99213 Established patient office or other outpatient visit, typically 15 minutes	148	120	$200.00	$94.83
92136 Measurement of corneal curvature and depth of eye	62	34	$180.00	$29.42
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	60	44	$200.00	$133.66
92499 Service or surgery of the eye	40	27	$600.00	$40.91
67820 Removal of eyelashes using forceps	30	15	$228.00	$24.65
92273 Full field recording of retinal electrical responses to external stimuli with interpretation and report	22	17	$300.00	$137.45
76514 Ultrasound scan of cornea to determine thickness	21	20	$80.00	$11.42
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	17	16	$200.00	$58.37
92004 New patient complete exam of visual system	16	16	$180.00	$156.87
92132 Imaging of front third of eye	16	15	$90.00	$28.61
0509T Pattern recording of retinal electrical responses to external stimuli with interpretation and report	14	14	$250.00	$75.22

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92012 Established patient problem focused exam of visual system	763	364	$95.00	$91.45
92134 Imaging of retina	419	282	$90.00	$41.37
92250 Photography of the retina	276	266	$180.00	$46.14
92014 Established patient complete exam of visual system	268	259	$160.00	$130.32
92083 Exam of visual field with extended testing	209	167	$150.00	$64.86
83861 Microfluid analysis of tears	194	72	$35.00	$22.37
92133 Imaging of optic nerve	167	150	$90.00	$36.74
92136 Measurement of corneal curvature and depth of eye	48	25	$180.00	$34.08
0509T Pattern recording of retinal electrical responses to external stimuli with interpretation and report	35	35	$250.00	$79.00
92499 Service or surgery of the eye	34	24	$600.00	$46.53
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	29	26	$188.79	$112.44
95930 Measurement of nerve conduction using visual stimulation testing with report	28	28	$250.00	$68.98
99213 Established patient office or other outpatient visit, typically 15 minutes	27	19	$192.22	$76.70
92132 Imaging of front third of eye	22	20	$90.00	$29.87
76514 Ultrasound scan of cornea to determine thickness	22	22	$80.00	$11.74
92004 New patient complete exam of visual system	18	18	$180.00	$155.51
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	14	13	$173.21	$43.87

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92012 Established patient problem focused exam of visual system	852	400	$95.00	$89.53
92134 Imaging of retina	444	310	$90.00	$40.77
83861 Microfluid analysis of tears	332	102	$35.00	$22.03
92250 Photography of the retina	282	268	$180.00	$51.04
92014 Established patient complete exam of visual system	267	259	$160.00	$128.41
92083 Exam of visual field with extended testing	254	190	$150.00	$64.53
92133 Imaging of optic nerve	216	185	$90.00	$35.97
0509T Pattern recording of retinal electrical responses to external stimuli with interpretation and report	92	92	$250.00	$80.53
95930 Measurement of nerve conduction using visual stimulation testing with report	76	76	$250.00	$69.80
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	47	39	$135.00	$106.34
92499 Service or surgery of the eye	46	29	$600.00	$49.47
92136 Measurement of corneal curvature and depth of eye	31	17	$180.00	$36.98
76514 Ultrasound scan of cornea to determine thickness	30	30	$80.00	$12.12
67820 Removal of eyelashes using forceps	28	18	$231.43	$38.23
92004 New patient complete exam of visual system	23	23	$180.00	$153.70

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92012 Established patient problem focused exam of visual system	764	359	$95.00	$89.11
92134 Imaging of retina	369	268	$90.00	$41.48
83861 Microfluid analysis of tears	354	105	$35.00	$22.03
92014 Established patient complete exam of visual system	292	284	$160.00	$128.26
92250 Photography of the retina	284	268	$180.00	$57.22
92083 Exam of visual field with extended testing	212	172	$150.00	$64.79
92133 Imaging of optic nerve	201	175	$90.00	$36.90
92275 Recording of retinal electrical responses to external stimuli	105	105	$250.00	$152.63
95930 Measurement of nerve conduction using visual stimulation testing with report	102	102	$250.00	$71.09
92499 Service or surgery of the eye	54	31	$600.00	$54.87
92136 Measurement of corneal curvature and depth of eye	54	27	$180.00	$40.91
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	44	39	$135.00	$108.14
76514 Ultrasound scan of cornea to determine thickness	36	35	$80.00	$14.84
67820 Removal of eyelashes using forceps	23	12	$234.78	$47.55
92004 New patient complete exam of visual system	17	17	$180.00	$154.23

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92012 Established patient problem focused exam of visual system	735	346	$95.00	$83.22
92134 Imaging of retina	401	280	$90.00	$39.22
83861 Microfluid analysis of tears	290	91	$35.00	$22.21
92014 Established patient complete exam of visual system	260	255	$160.00	$120.31
92250 Photography of the retina	245	236	$180.00	$63.94
92083 Exam of visual field with extended testing	230	180	$150.00	$61.31
92133 Imaging of optic nerve	206	165	$90.00	$35.04
92275 Recording of retinal electrical responses to external stimuli	115	108	$250.00	$144.81
95930 Measurement of nerve conduction using visual stimulation testing with report	105	98	$250.00	$126.12
92499 Service or surgery of the eye	64	42	$662.50	$61.65
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	51	46	$135.00	$104.54
76514 Ultrasound scan of cornea to determine thickness	42	42	$80.00	$13.91
67820 Removal of eyelashes using forceps	18	15	$210.00	$53.15
92004 New patient complete exam of visual system	17	17	$180.00	$145.38
92136 Measurement of corneal curvature and depth of eye	16	11	$180.00	$47.88

Medical Specialties & State Licenses

Optometrist Primary Specialty

NUCC Taxonomy Code: 152W00000X

State License TX 4998TG

Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

1548224-10 (TX)

Hospital & Practice Group Affiliations

1960 Eye Surgeons, P.a.

13333 Dotson Rd, Houston, TX 770704305

Phone: 2818901784

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

5 Associated Practitioners

Dr. Zane Anwar , MD

Ophthalmology

NPI 1699110213

Doctor of Medicine (M.D.)

Dr. Joel Cohen , MD

Ophthalmology

NPI 1700874518

Doctor of Medicine (M.D.)

Dr. Reem Renno , MD

Specialist

NPI 1720056773

Doctor of Medicine (M.D.)

Dr. Anne Chang-Godinich , MD

Ophthalmology

NPI 1760479596

Doctor of Medicine (M.D.)

Dr. Tessa Markus , OD

Optometrist

NPI 1841261260

Doctor of Optometry

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

8 Historical Events

📍

Updated Practice Location May 29, 2025

Registered at 13333 DOTSON RD., SUITE 200, HOUSTON, TX 770704305 (Tel: 2818901784)

📍

Updated Business Mailing Address May 29, 2025

Registered at 13333 DOTSON RD., SUITE 200, HOUSTON, TX 770704305 (Tel: 2818901784)

✅

NPI Profile Active July 12, 2010

NPI status registered as active in NPPES database

📍

Updated Practice Location July 12, 2010

Registered at 505 J DAVIS ARMISTEAD BLDG, 4901 CLAHOUN, HOUSTON, TX 772042020 (Tel: 7137432020)

📍

Updated Business Mailing Address July 12, 2010

Registered at 505 J DAVIS ARMISTEAD BLDG, 4901 CLAHOUN, HOUSTON, TX 772042020 (Tel: 7137432020)

👤

Provider Name / Credentials Updated July 12, 2010

Recorded as THOMAS MARKUS, O.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 12, 2010

Optometrist (License #4998TG in TX)

🟢

Initial NPI Registration & Enumeration April 27, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1467419903

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: April 27, 2006

Last Update: May 29, 2025

Sole Proprietor: No

Update or Correct Profile

Mailing Address

13333 Dotson Rd., Suite 200

Houston, TX 770704305

Phone: 2818901784

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.