Active NPI 1356337448 Individual Practitioner Male Practitioner

Dr. William Parker Marks , MD

Ophthalmology • Canton, GA

Professional Overview & Biography Verified Profile Summary

Dr. William Marks, MD is a registered healthcare professional specializing in Ophthalmology in Canton, GA. Practice services are available at 125 OAKSIDE CT under active NPI credentials.

Frequently performed procedures and clinical services include examination of cornea and iris using lens device and slit lamp, established patient outpatient office visit, established patient complete exam of visual system. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

125 Oakside Ct
Suite 102

Canton, GA 301142498

Telephone 6788800662

Fax 6788800675

Associated Practice Facility / Clinic

🏢 Etowah Eye Clinic, P.c. Facility NPI 1932322302

Specialty Benchmarks & Practice Insights

Comparative analytics for Ophthalmology in Canton, GA

Active Practitioner

Practitioner Clinical Experience

Active

City Avg: 21.5 Yrs

State Avg: 28.1 Yrs

Regional Practice Density

5 Specialists

Practicing in Canton, GA (579 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

51.3% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2021)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92020 Examination of cornea and iris using lens device and slit lamp	222	217	$85.00	$28.03
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	184	164	$175.00	$129.98
92014 Established patient complete exam of visual system	160	160	$225.00	$127.33
92083 Exam of visual field with extended testing	74	73	$185.00	$64.00
92133 Imaging of optic nerve	65	65	$175.00	$37.57
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	54	50	$100.00	$56.65
99213 Established patient office or other outpatient visit, typically 15 minutes	40	39	$125.00	$92.04
92250 Photography of the retina	33	33	$175.00	$39.60
92004 New patient complete exam of visual system	15	15	$250.00	$152.14

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92014 Established patient complete exam of visual system	573	572	$135.05	$127.20
92020 Examination of cornea and iris using lens device and slit lamp	397	393	$59.59	$28.00
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	390	302	$50.00	$46.03
92083 Exam of visual field with extended testing	205	194	$114.76	$63.75
92250 Photography of the retina	176	176	$119.36	$45.69
92133 Imaging of optic nerve	134	133	$85.00	$37.52
92012 Established patient problem focused exam of visual system	100	90	$95.00	$89.09
92004 New patient complete exam of visual system	76	76	$165.00	$152.28
99441 Telephone medical discussion with physician, 5-10 minutes	24	23	$50.00	$45.98
68761 Closure of tear duct opening using plug	23	13	$185.00	$117.83
66821 Removal of recurring cataract in lens capsule using a laser	16	15	$750.00	$316.30

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
66984 Removal of cataract with insertion of lens	2,520	17	$29.44	$1.43
92014 Established patient complete exam of visual system	696	693	$135.00	$126.42
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	554	394	$50.00	$45.16
92020 Examination of cornea and iris using lens device and slit lamp	493	491	$59.61	$27.53
92250 Photography of the retina	305	303	$119.75	$50.65
92133 Imaging of optic nerve	264	262	$85.00	$37.34
92083 Exam of visual field with extended testing	259	246	$114.72	$63.59
92012 Established patient problem focused exam of visual system	158	134	$95.00	$87.72
92004 New patient complete exam of visual system	135	135	$165.00	$151.67
66984 Removal of cataract with insertion of lens	116	22	$503.56	$142.58
76519 Ultrasound of eye for determination of lens power	58	29	$95.00	$32.65
76514 Ultrasound scan of cornea to determine thickness	44	44	$45.00	$12.08
68761 Closure of tear duct opening using plug	34	22	$185.00	$125.72
66821 Removal of recurring cataract in lens capsule using a laser	32	29	$750.00	$314.54

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
66984 Removal of cataract with insertion of lens	3,877	30	$29.54	$1.66
92014 Established patient complete exam of visual system	659	654	$135.00	$126.17
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	589	418	$50.00	$44.01
92020 Examination of cornea and iris using lens device and slit lamp	481	473	$59.46	$26.67
92083 Exam of visual field with extended testing	299	285	$114.51	$64.54
92250 Photography of the retina	289	289	$119.33	$57.01
92133 Imaging of optic nerve	284	283	$85.00	$37.32
92012 Established patient problem focused exam of visual system	162	145	$95.00	$87.70
92004 New patient complete exam of visual system	132	132	$165.00	$149.07
66984 Removal of cataract with insertion of lens	128	27	$673.83	$189.51
76514 Ultrasound scan of cornea to determine thickness	82	82	$45.00	$14.73
76519 Ultrasound of eye for determination of lens power	81	41	$95.00	$37.32
66821 Removal of recurring cataract in lens capsule using a laser	36	28	$750.00	$314.66
68761 Closure of tear duct opening using plug	17	13	$185.00	$137.17
99202 New patient office or other outpatient visit, typically 20 minutes	15	15	$80.00	$75.47
92225 Examination of eye by ophthalmoscope with retinal drawing	13	13	$48.00	$27.33

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92014 Established patient complete exam of visual system	699	697	$135.00	$122.91
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	559	401	$50.00	$43.58
92020 Examination of cornea and iris using lens device and slit lamp	472	463	$59.66	$26.64
92250 Photography of the retina	342	342	$119.31	$65.47
92083 Exam of visual field with extended testing	318	293	$114.54	$64.23
92133 Imaging of optic nerve	212	211	$85.00	$36.96
92012 Established patient problem focused exam of visual system	133	121	$95.00	$85.19
92004 New patient complete exam of visual system	126	126	$165.00	$147.27
76514 Ultrasound scan of cornea to determine thickness	113	112	$45.00	$14.34
76519 Ultrasound of eye for determination of lens power	65	32	$95.00	$56.00
66984 Removal of cataract with insertion of lens	47	35	$1907.74	$565.06
68761 Closure of tear duct opening using plug	38	25	$185.00	$126.46
66984 Removal of cataract with insertion of lens	24	16	$150.00	$128.25
66821 Removal of recurring cataract in lens capsule using a laser	18	16	$725.53	$311.07
92225 Examination of eye by ophthalmoscope with retinal drawing	11	11	$48.00	$26.85

Medical Specialties & State Licenses

Ophthalmology Primary Specialty

NUCC Taxonomy Code: 207W00000X

State License GA 030829

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.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

000575858J (GA)

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active July 14, 2010

NPI status registered as active in NPPES database

📍

Updated Practice Location July 14, 2010

Registered at 125 OAKSIDE CT, SUITE 102, CANTON, GA 301142498 (Tel: 6788800662)

📍

Updated Business Mailing Address July 14, 2010

Registered at 125 OAKSIDE CT, SUITE 102, CANTON, GA 301142498 (Tel: 6788800662)

👤

Provider Name / Credentials Updated July 14, 2010

Recorded as WILLIAM MARKS, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 14, 2010

Ophthalmology (License #030829 in GA)

🟢

Initial NPI Registration & Enumeration September 23, 2005

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: 1356337448

Entity Type:

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

Enumeration Date: September 23, 2005

Last Update: July 14, 2010

Sole Proprietor: Yes

Update or Correct Profile

Mailing Address

125 Oakside Ct, Suite 102

Canton, GA 301142498

Phone: 6788800662

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.