Active NPI 1023031994 Individual Practitioner Male Practitioner

Dr. Gregory B. Clay , OD, FAAO

Optometrist • Durant, OK

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Gregory Clay, OD, FAAO is a certified Optometrist practicing in Durant, OK. With approximately 49 years of clinical experience since graduating from Southern College Of Optometry in 1977, Dr. Clay delivers high-quality medical care to the local community at 1901 UNIVERSITY BLVD..

Dr. Clay is affiliated with Southeastern Oklahoma Eye Clinic and accepts Medicare assignment.

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

Practice Location & Contact Primary Location

Practice Address

1901 University Blvd.

Durant, OK 747012127

Telephone 5809202020

Fax 5809245656

Associated Practice Facility / Clinic

🏢 Southeastern Oklahoma Eye Clinic Facility NPI 1700915956

Medicare Profile & Education

Medical School

Southern College Of Optometry

Graduation Year

1977

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Optometrist in Durant, OK

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

49 Yrs +31.6 yrs vs City Avg

City Avg: 17.4 Yrs

State Avg: 22.4 Yrs

Regional Practice Density

15 Specialists

Practicing in Durant, OK (943 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

41.7% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Clay (49 Years) 49 Yrs

Durant Specialty Average (17.4 Years) 17.4 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
92250 Photography of the retina	669	580	$97.80	$32.95
92014 Established patient complete exam of visual system	559	512	$139.00	$115.83
92083 Exam of visual field with extended testing	530	385	$99.00	$51.19
92283 Extended color vision examination	476	364	$89.00	$40.45
92134 Imaging of retina	411	311	$59.00	$34.10
83861 Microfluid analysis of tears	403	176	$39.00	$21.94
0509T Pattern recording of retinal electrical responses to external stimuli with interpretation and report	371	290	$124.82	$68.37
92145 Measurement of corneal pressure	318	176	$21.00	$10.63
92012 Established patient problem focused exam of visual system	310	210	$89.00	$81.75
92286 Imaging of front third of eye using a special microscope	250	212	$59.00	$35.38
92284 Evaluation of eye adaptation to light and dark with interpretation and report	237	200	$79.00	$26.12
G2012 Brief communication technology-based service, e.g. virtual check-in, by a physician or other qualified health care professional who can report evaluation and management services, provided to an established patient, not originating from a related e/m servic	208	186	$29.00	$13.22
99441 Telephone medical discussion with physician, 5-10 minutes	151	142	$89.00	$51.88
92273 Full field recording of retinal electrical responses to external stimuli with interpretation and report	101	94	$199.00	$113.67
92133 Imaging of optic nerve	100	95	$59.00	$30.79
66984 Removal of cataract with insertion of lens	49	30	$225.00	$97.07
92004 New patient complete exam of visual system	27	27	$154.00	$137.66

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92250 Photography of the retina	693	620	$98.00	$33.46
92014 Established patient complete exam of visual system	620	579	$139.00	$116.10
92083 Exam of visual field with extended testing	545	395	$99.00	$50.77
92283 Extended color vision examination	499	383	$89.00	$41.09
92134 Imaging of retina	438	341	$59.00	$34.37
92012 Established patient problem focused exam of visual system	396	243	$89.00	$82.23
83861 Microfluid analysis of tears	378	163	$39.00	$21.91
92145 Measurement of corneal pressure	331	178	$21.00	$10.51
99441 Telephone medical discussion with physician, 5-10 minutes	320	275	$89.00	$51.59
92284 Evaluation of eye adaptation to light and dark with interpretation and report	305	256	$79.00	$34.25
0509T Pattern recording of retinal electrical responses to external stimuli with interpretation and report	281	241	$164.27	$68.05
92286 Imaging of front third of eye using a special microscope	214	188	$59.00	$35.61
92133 Imaging of optic nerve	106	95	$59.00	$30.72
92273 Full field recording of retinal electrical responses to external stimuli with interpretation and report	88	75	$199.00	$114.43
66984 Removal of cataract with insertion of lens	72	44	$225.00	$99.79
95930 Measurement of nerve conduction using visual stimulation testing with report	56	51	$149.00	$59.89
G2012 Brief communication technology-based service, e.g. virtual check-in, by a physician or other qualified health care professional who can report evaluation and management services, provided to an established patient, not originating from a related e/m servic	41	41	$29.00	$13.36
92004 New patient complete exam of visual system	35	35	$154.00	$138.42
92274 Measurement of retinal and optic nerve function targeting multiple separate locations	22	22	$129.00	$80.63

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92014 Established patient complete exam of visual system	726	674	$139.00	$117.30
92250 Photography of the retina	665	608	$98.00	$33.74
92083 Exam of visual field with extended testing	509	387	$99.00	$51.13
92012 Established patient problem focused exam of visual system	502	320	$89.00	$82.20
92283 Extended color vision examination	491	389	$89.00	$41.67
92134 Imaging of retina	444	349	$59.00	$34.79
92145 Measurement of corneal pressure	342	187	$21.00	$10.52
83861 Microfluid analysis of tears	305	127	$39.00	$22.05
0509T Pattern recording of retinal electrical responses to external stimuli with interpretation and report	286	234	$192.57	$68.02
G2012 Brief communication technology-based service, e.g. virtual check-in, by a physician or other qualified health care professional who can report evaluation and management services, provided to an established patient, not originating from a related e/m servic	275	227	$29.00	$13.61
92284 Evaluation of eye adaptation to light and dark with interpretation and report	243	210	$79.00	$45.98
92286 Imaging of front third of eye using a special microscope	191	177	$59.00	$36.21
92133 Imaging of optic nerve	104	97	$59.00	$31.57
95930 Measurement of nerve conduction using visual stimulation testing with report	96	92	$149.00	$59.91
92273 Full field recording of retinal electrical responses to external stimuli with interpretation and report	89	80	$199.00	$115.47
66984 Removal of cataract with insertion of lens	72	42	$225.00	$100.71
92004 New patient complete exam of visual system	32	32	$154.00	$136.85
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	20	20	$199.00	$157.89
92081 Exam of visual field with limited testing	13	13	$59.00	$27.20

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92014 Established patient complete exam of visual system	771	703	$139.00	$119.16
92250 Photography of the retina	759	690	$98.00	$36.69
92012 Established patient problem focused exam of visual system	741	457	$89.00	$84.03
92083 Exam of visual field with extended testing	594	441	$99.00	$52.58
92283 Extended color vision examination	541	426	$89.00	$41.64
92134 Imaging of retina	488	384	$59.00	$35.90
92145 Measurement of corneal pressure	433	209	$21.00	$11.43
0509T Pattern recording of retinal electrical responses to external stimuli with interpretation and report	382	320	$196.07	$71.50
92284 Evaluation of eye adaptation to light and dark with interpretation and report	354	295	$79.00	$45.75
83861 Microfluid analysis of tears	270	124	$39.00	$22.48
92286 Imaging of front third of eye using a special microscope	197	185	$59.00	$34.18
92273 Full field recording of retinal electrical responses to external stimuli with interpretation and report	185	155	$199.00	$121.32
92133 Imaging of optic nerve	147	134	$59.00	$32.27
95930 Measurement of nerve conduction using visual stimulation testing with report	144	133	$149.00	$62.36
66984 Removal of cataract with insertion of lens	141	84	$225.00	$101.32
G2012 Brief communication technology-based service, e.g. virtual check-in, by a physician or other qualified health care professional who can report evaluation and management services, provided to an established patient, not originating from a related e/m servic	93	88	$29.00	$13.98
92004 New patient complete exam of visual system	57	57	$154.00	$142.45
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	41	41	$199.00	$160.58
76514 Ultrasound scan of cornea to determine thickness	11	11	$49.00	$9.48

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92250 Photography of the retina	700	626	$98.00	$42.33
92012 Established patient problem focused exam of visual system	688	443	$89.00	$83.48
92014 Established patient complete exam of visual system	668	609	$139.00	$119.75
92083 Exam of visual field with extended testing	488	384	$99.00	$53.22
0509T Pattern recording of retinal electrical responses to external stimuli with interpretation and report	487	390	$198.01	$71.51
92283 Extended color vision examination	439	363	$89.00	$40.72
92134 Imaging of retina	435	347	$59.00	$36.04
92145 Measurement of corneal pressure	406	193	$21.00	$13.00
83861 Microfluid analysis of tears	354	139	$37.68	$22.09
92284 Evaluation of eye adaptation to light and dark with interpretation and report	312	265	$79.00	$46.72
92286 Imaging of front third of eye using a special microscope	197	172	$59.00	$34.38
92133 Imaging of optic nerve	130	126	$59.00	$32.89
95930 Measurement of nerve conduction using visual stimulation testing with report	125	120	$149.00	$62.13
66984 Removal of cataract with insertion of lens	109	63	$225.00	$102.94
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	75	75	$199.00	$157.82
68761 Closure of tear duct opening using plug	34	17	$187.29	$103.55
92004 New patient complete exam of visual system	31	31	$154.00	$143.70
92273 Full field recording of retinal electrical responses to external stimuli with interpretation and report	20	20	$189.00	$122.09
66821 Removal of recurring cataract in lens capsule using a laser	16	12	$449.00	$316.85
92025 Ct scan of cornea	14	13	$59.00	$32.57
G2012 Brief communication technology-based service, e.g. virtual check-in, by a physician or other qualified health care professional who can report evaluation and management services, provided to an established patient, not originating from a related e/m servic	14	14	$29.00	$14.22
76514 Ultrasound scan of cornea to determine thickness	13	13	$49.00	$10.87
67820 Removal of eyelashes using forceps	13	11	$69.00	$25.54

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92012 Established patient problem focused exam of visual system	876	527	$89.00	$82.87
92250 Photography of the retina	764	662	$98.00	$47.09
92014 Established patient complete exam of visual system	748	670	$139.00	$119.34
0509T Pattern recording of retinal electrical responses to external stimuli with interpretation and report	639	488	$199.00	$72.92
92283 Extended color vision examination	602	478	$89.00	$40.99
92134 Imaging of retina	551	424	$59.00	$36.13
92083 Exam of visual field with extended testing	492	402	$99.00	$53.26
92145 Measurement of corneal pressure	469	203	$20.48	$15.27
83861 Microfluid analysis of tears	384	146	$39.00	$21.85
92284 Evaluation of eye adaptation to light and dark with interpretation and report	372	318	$79.00	$48.00
92286 Imaging of front third of eye using a special microscope	254	229	$59.00	$34.07
92082 Exam of visual field with intermediate testing	167	162	$74.00	$40.05
92133 Imaging of optic nerve	167	156	$59.00	$32.26
95930 Measurement of nerve conduction using visual stimulation testing with report	164	156	$149.00	$63.13
66821 Removal of recurring cataract in lens capsule using a laser	142	91	$449.00	$313.91
66984 Removal of cataract with insertion of lens	112	68	$225.00	$122.46
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	82	82	$199.00	$155.37
76514 Ultrasound scan of cornea to determine thickness	31	30	$49.00	$11.29
92004 New patient complete exam of visual system	30	30	$154.00	$143.76
68761 Closure of tear duct opening using plug	24	19	$306.79	$164.27
67820 Removal of eyelashes using forceps	23	12	$69.00	$30.40
92025 Ct scan of cornea	16	14	$59.00	$33.07
92020 Examination of cornea and iris using lens device and slit lamp	12	12	$59.00	$26.44

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92012 Established patient problem focused exam of visual system	951	508	$89.00	$81.54
92250 Photography of the retina	726	642	$98.00	$52.30
92014 Established patient complete exam of visual system	701	627	$139.00	$117.42
92275 Recording of retinal electrical responses to external stimuli	558	422	$199.00	$136.65
92134 Imaging of retina	418	332	$59.00	$36.55
92082 Exam of visual field with intermediate testing	413	332	$74.00	$39.71
92283 Extended color vision examination	400	347	$89.00	$41.38
83861 Microfluid analysis of tears	332	124	$39.00	$22.03
92145 Measurement of corneal pressure	319	163	$22.32	$15.26
92286 Imaging of front third of eye using a special microscope	295	251	$59.00	$33.38
92083 Exam of visual field with extended testing	155	139	$99.00	$53.72
92499 Service or surgery of the eye	150	135	$195.00	$52.44
95930 Measurement of nerve conduction using visual stimulation testing with report	136	128	$149.00	$63.42
92133 Imaging of optic nerve	121	115	$59.00	$32.39
66984 Removal of cataract with insertion of lens	121	76	$225.00	$120.36
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	100	100	$199.00	$156.99
66821 Removal of recurring cataract in lens capsule using a laser	90	62	$449.00	$300.66
92004 New patient complete exam of visual system	39	39	$154.00	$142.48
76514 Ultrasound scan of cornea to determine thickness	30	30	$49.00	$13.58
92020 Examination of cornea and iris using lens device and slit lamp	25	25	$59.00	$25.44
92025 Ct scan of cornea	21	19	$59.00	$32.43
67820 Removal of eyelashes using forceps	18	12	$69.00	$37.59
92100 Multiple measurements of eye fluid pressure over an extended time period	17	17	$119.00	$74.99

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92012 Established patient problem focused exam of visual system	968	508	$89.00	$76.32
92250 Photography of the retina	667	605	$98.00	$57.63
92014 Established patient complete exam of visual system	641	587	$139.00	$111.05
92275 Recording of retinal electrical responses to external stimuli	585	431	$199.00	$130.29
92283 Extended color vision examination	439	362	$89.00	$40.45
92082 Exam of visual field with intermediate testing	421	341	$74.99	$38.36
92499 Service or surgery of the eye	340	248	$305.04	$58.11
83861 Microfluid analysis of tears	308	111	$39.00	$22.20
92286 Imaging of front third of eye using a special microscope	283	244	$59.00	$32.17
92134 Imaging of retina	245	215	$56.39	$34.76
92083 Exam of visual field with extended testing	179	155	$102.91	$51.23
95930 Measurement of nerve conduction using visual stimulation testing with report	156	133	$157.97	$111.36
92133 Imaging of optic nerve	146	129	$57.84	$30.98
66984 Removal of cataract with insertion of lens	98	58	$225.00	$115.90
66821 Removal of recurring cataract in lens capsule using a laser	73	49	$449.00	$294.17
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	67	67	$199.60	$149.72
92004 New patient complete exam of visual system	49	49	$154.00	$134.37
92020 Examination of cornea and iris using lens device and slit lamp	41	41	$59.00	$24.33
76514 Ultrasound scan of cornea to determine thickness	40	40	$51.92	$12.70
92100 Multiple measurements of eye fluid pressure over an extended time period	23	23	$119.00	$70.35
67820 Removal of eyelashes using forceps	17	12	$69.00	$45.53
92025 Ct scan of cornea	17	15	$58.41	$31.33

Medical Specialties & State Licenses

CMS Verified: 2026-03-16

Optometrist Primary Specialty

NUCC Taxonomy Code: 152W00000X

State License OK 916

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

100761430A (OK)

Hospital & Practice Group Affiliations

Southeastern Oklahoma Eye Clinic

1901 W University Blvd, Durant, OK 747013098

Phone: 5809202020

Practice Associates & Co-Workers

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

8 Associated Practitioners

Dr. Cheri Watkins , OD

Optometrist

NPI 1083609416

Doctor of Optometry

Dr. Hannah Gregory , OD, MS

Optometrist

NPI 1366015935

Doctor of Optometry, Master of Science

Autumn Purcell

Student in an Organized Health Care Education/Training Program

NPI 1518802123

Dr. Andrew Whitley , OD

Optometrist

NPI 1588096432

Doctor of Optometry

Dr. Wamika Kumar , OD

Optometrist

NPI 1730700303

Doctor of Optometry

Dr. Trenton Kellogg , OD

Optometrist

NPI 1881267458

Doctor of Optometry

Career & Practice History Timeline

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

7 Historical Events

📍

Updated Business Mailing Address March 16, 2026

Registered at 1901 W UNIVERSITY BLVD, DURANT, OK 747013098 (Tel: 5809202020)

✅

NPI Profile Active July 11, 2008

NPI status registered as active in NPPES database

📍

Updated Practice Location July 11, 2008

Registered at 1901 UNIVERSITY BLVD., DURANT, OK 747012127 (Tel: 5809202020)

📍

Updated Business Mailing Address July 11, 2008

Registered at PO BOX 1426, DURANT, OK 747021426 (Tel: 5809202020)

👤

Provider Name / Credentials Updated July 11, 2008

Recorded as GREGORY CLAY, O.D.,F.A.A.O

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 11, 2008

Optometrist (License #916 in OK)

🟢

Initial NPI Registration & Enumeration July 25, 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: 1023031994

Entity Type:

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

Enumeration Date: July 25, 2006

Last Update: March 16, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

1901 W University Blvd

Durant, OK 747013098

Phone: 5809202020

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.