Active NPI 1730442500 Individual Practitioner Male Practitioner

Dr. Michael Vincent Stock , MD

Ophthalmology • O Fallon, IL

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Michael Stock, MD is a certified Ophthalmology practicing in O Fallon, IL. With approximately 14 years of clinical experience since graduating from Washington University School Of Medicine in 2012, Dr. Stock delivers high-quality medical care to the local community at 705 INSIGHT AVE.

Dr. Stock maintains professional affiliations with Ideal Eye Surgery Llc, Washington University and accepts Medicare assignment.

Frequently performed procedures and clinical services include measurement of corneal curvature and depth of eye, removal of cataract with insertion of lens, new patient outpatient office visit. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

705 Insight Ave

O Fallon, IL 622692146

Telephone 6183911660

Fax 6188616003

Associated Practice Facility / Clinic

🏢 Ideal Eye Surgery Llc Facility NPI 1366966186

Medicare Profile & Education

Medical School

Washington University School Of Medicine

Graduation Year

2012

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Ophthalmology in O Fallon, IL

Established Specialist (10-20 Yrs)

Practitioner Clinical Experience

14 Yrs +2.8 yrs vs City Avg

City Avg: 11.2 Yrs

State Avg: 31.1 Yrs

Regional Practice Density

5 Specialists

Practicing in O Fallon, IL (954 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

73.8% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Stock (14 Years) 14 Yrs

O Fallon Specialty Average (11.2 Years) 11.2 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
92136 Measurement of corneal curvature and depth of eye	1,195	801	$150.00	$37.19
66984 Removal of cataract with insertion of lens	1,085	665	$2007.37	$429.18
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	783	783	$340.00	$160.97
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	612	584	$215.00	$121.96
66821 Removal of recurring cataract in lens capsule using a laser	269	188	$1000.00	$267.63
66982 Complex removal of cataract with insertion of prosthetic lens	100	77	$2511.00	$606.82
92134 Imaging of retina	85	85	$120.00	$35.69
92133 Imaging of optic nerve	71	71	$100.00	$31.45

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92136 Measurement of corneal curvature and depth of eye	1,273	808	$149.95	$37.89
66984 Removal of cataract with insertion of lens	1,041	629	$2020.75	$444.67
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	824	824	$340.00	$162.18
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	659	620	$215.57	$124.16
66821 Removal of recurring cataract in lens capsule using a laser	289	194	$1000.00	$271.50
66982 Complex removal of cataract with insertion of prosthetic lens	98	76	$2509.18	$615.79
92134 Imaging of retina	81	79	$120.00	$36.59
92133 Imaging of optic nerve	73	72	$100.00	$31.94
99213 Established patient office or other outpatient visit, typically 15 minutes	24	23	$150.00	$89.03

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92136 Measurement of corneal curvature and depth of eye	860	544	$149.80	$40.29
66984 Removal of cataract with insertion of lens	712	454	$2030.34	$463.54
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	518	518	$340.00	$168.23
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	485	450	$215.77	$128.17
66821 Removal of recurring cataract in lens capsule using a laser	148	105	$1000.00	$295.29
66982 Complex removal of cataract with insertion of prosthetic lens	95	68	$2500.00	$646.03
92134 Imaging of retina	66	59	$120.00	$38.29
92133 Imaging of optic nerve	31	31	$101.29	$33.85

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92136 Measurement of corneal curvature and depth of eye	665	433	$147.32	$44.29
66984 Removal of cataract with insertion of lens	515	321	$2013.98	$477.17
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	435	435	$340.02	$170.38
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	362	336	$215.00	$130.98
66982 Complex removal of cataract with insertion of prosthetic lens	108	82	$2506.48	$651.09
66821 Removal of recurring cataract in lens capsule using a laser	101	68	$1000.00	$303.31
92133 Imaging of optic nerve	55	55	$100.55	$34.44
92134 Imaging of retina	47	46	$120.21	$37.92
66821 Removal of recurring cataract in lens capsule using a laser	46	38	$1000.00	$248.18
65820 Incision to improve eye fluid flow	21	14	$2500.00	$741.32
0191T Internal insertion of eye fluid drainage device	16	11	$2000.00	$388.38
92020 Examination of cornea and iris using lens device and slit lamp	12	12	$50.00	$27.60

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92136 Measurement of corneal curvature and depth of eye	542	346	$117.07	$47.92
66984 Removal of cataract with insertion of lens	457	288	$2028.88	$471.18
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	339	339	$340.00	$166.14
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	275	257	$215.00	$108.81
66982 Complex removal of cataract with insertion of prosthetic lens	65	48	$2500.00	$628.45
66821 Removal of recurring cataract in lens capsule using a laser	41	34	$1000.00	$311.27
92134 Imaging of retina	38	37	$120.00	$38.05
92133 Imaging of optic nerve	32	32	$100.00	$34.28
66821 Removal of recurring cataract in lens capsule using a laser	26	22	$1000.00	$248.67
99213 Established patient office or other outpatient visit, typically 15 minutes	18	18	$147.22	$75.22

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92136 Measurement of corneal curvature and depth of eye	449	286	$122.17	$52.87
66984 Removal of cataract with insertion of lens	343	228	$2018.95	$557.55
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	306	306	$339.58	$163.99
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	214	195	$215.61	$107.25
66982 Complex removal of cataract with insertion of prosthetic lens	53	43	$2500.00	$683.48
66821 Removal of recurring cataract in lens capsule using a laser	51	37	$1003.92	$331.58
66821 Removal of recurring cataract in lens capsule using a laser	21	16	$1000.00	$257.84
66984 Removal of cataract with insertion of lens	18	17	$2000.00	$583.77
92020 Examination of cornea and iris using lens device and slit lamp	15	15	$52.00	$27.20
92004 New patient complete exam of visual system	14	14	$294.64	$148.76
92012 Established patient problem focused exam of visual system	14	14	$164.29	$87.06
92225 Examination of eye by ophthalmoscope with retinal drawing	11	11	$55.00	$47.27

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92136 Measurement of corneal curvature and depth of eye	142	114	$189.93	$60.31
66984 Removal of cataract with insertion of lens	128	96	$2313.28	$553.99
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	103	103	$273.83	$163.78
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	95	93	$152.47	$105.78
66821 Removal of recurring cataract in lens capsule using a laser	25	19	$1000.00	$279.24
66821 Removal of recurring cataract in lens capsule using a laser	22	19	$1000.00	$266.41
66982 Complex removal of cataract with insertion of prosthetic lens	17	14	$2747.06	$710.46
92083 Exam of visual field with extended testing	12	12	$125.00	$61.76

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92136 Measurement of corneal curvature and depth of eye	353	252	$250.00	$64.89
66984 Removal of cataract with insertion of lens	291	194	$2500.00	$524.49
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	286	236	$125.00	$104.86
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	245	245	$195.00	$162.46
66821 Removal of recurring cataract in lens capsule using a laser	51	43	$1000.00	$287.39
92133 Imaging of optic nerve	43	40	$200.00	$36.53
92083 Exam of visual field with extended testing	41	38	$110.00	$62.42
66982 Complex removal of cataract with insertion of prosthetic lens	39	35	$3000.00	$662.45
66821 Removal of recurring cataract in lens capsule using a laser	31	22	$1000.00	$252.60
92020 Examination of cornea and iris using lens device and slit lamp	24	24	$50.00	$26.26

Medical Specialties & State Licenses

CMS Verified: 2025-12-11

Ophthalmology Primary Specialty

NUCC Taxonomy Code: 207W00000X

State License MO 2016004847

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.

Ophthalmology

NUCC Taxonomy Code: 207W00000X

State License IL 036141217

Hospital & Practice Group Affiliations

Ideal Eye Surgery Llc

705 Insight Ave, O Fallon, IL 622692146

Phone: 6183911660

Washington University

4901 Forest Park Ave, Saint Louis, MO 631081495

Phone: 3143623937

Ideal Eye Surgery Llc

12400 Olive Blvd, Creve Coeur, MO 631415436

Phone: 3143919400

Secondary Practice Locations

900 W Temple Ave Bldg A

Effingham, IL 624012121

Phone: 6183911660

201 E Pleasant St

Taylorville, IL 625681562

Phone: 6183911660

12400 Olive Blvd Ste 200

Saint Louis, MO 631415436

Phone: 3143919400

Practice Associates & Co-Workers

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

6 Associated Practitioners

Dr. Grace Paley , MD

Ophthalmology

NPI 1184038986

Doctor of Medicine (M.D.)

Dr. Nicole Lowrey , MD, PhD

Ophthalmology

NPI 1356902381

Doctor of Medicine (M.D.), Doctor of Philosophy (Ph.D.)

Dr. Cameron Evans , DO

Ophthalmology

NPI 1528447174

Doctor of Osteopathic Medicine (D.O.)

Dr. Taylor Wolkart , OD

Optometrist

NPI 1831761360

Doctor of Optometry

Dr. Rocio Bentivegna , MD

Ophthalmology - Ophthalmic Plastic and Reconstructive Surgery

NPI 1871170183

Doctor of Medicine (M.D.)

Dr. Whitney Marlow , MD

Ophthalmology

NPI 1952783235

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

21 Historical Events

📍

Updated Practice Location September 23, 2025

Registered at 705 INSIGHT AVE, O FALLON, IL 622692146 (Tel: 6183911660)

📍

Updated Business Mailing Address September 23, 2025

Registered at 705 INSIGHT AVE, O FALLON, IL 622692146 (Tel: 6183911660)

📍

Updated Business Mailing Address April 17, 2025

Registered at PO BOX 7412011, CHICAGO, IL 606742011 (Tel: 3143623431)

📍

Updated Business Mailing Address April 25, 2024

Registered at PO BOX 60352, SAINT LOUIS, MO 631600352 (Tel: 3143623431)

📍

Updated Practice Location November 15, 2021

Registered at 517 S EUCLID AVE, DEPT OPTHALMOLOGY, 1ST FL, SAINT LOUIS, MO 631101007 (Tel: 3143623431)

📍

Updated Business Mailing Address November 15, 2021

Registered at 660 S EUCLID AVE, CB 8096, SAINT LOUIS, MO 631101010 (Tel: 3143623431)

📍

Updated Business Mailing Address January 17, 2020

Registered at 1660 ESSEX WAY, STE A, O FALLON, IL 622693076 (Tel: 3143623431)

📍

Updated Practice Location August 07, 2018

Registered at 517 S EUCLID AVE, SAINT LOUIS, MO 631101007 (Tel: 3143623431)

📍

Updated Business Mailing Address August 07, 2018

Registered at 660 S EUCLID AVE, CB 8096, SAINT LOUIS, MO 631101010 (Tel: 3143623431)

👤

Provider Name / Credentials Updated August 07, 2018

Recorded as MICHAEL STOCK, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) August 07, 2018

Ophthalmology (License #2016004847 in MO)

📍

Updated Practice Location March 17, 2018

Registered at 1660 ESSEX WAY STE A, O FALLON, IL 622693076 (Tel: 6183911660)

📍

Updated Business Mailing Address March 17, 2018

Registered at 1660 ESSEX WAY STE A, O FALLON, IL 622693076 (Tel: 6183911660)

📍

Updated Practice Location March 12, 2018

Registered at 1660 ESSEX WAY STE A, O FALLON, IL 622693076 (Tel: 6183911660)

📍

Updated Business Mailing Address March 12, 2018

Registered at 1660 ESSEX WAY STE A, O FALLON, IL 622693076 (Tel: 6183911660)

✅

NPI Profile Active August 31, 2016

NPI status registered as active in NPPES database

📍

Updated Practice Location August 31, 2016

Registered at 12855 NORTH FORTY DRIVE, SUITE 260, SOUTH TOWER, SAINT LOUIS, MO 63141 (Tel: 3149839800)

📍

Updated Business Mailing Address August 31, 2016

Registered at 12855 N 40 DR, SUITE 260, SOUTH TOWER, SAINT LOUIS, MO 631418657 (Tel: 3149839800)

👤

Provider Name / Credentials Updated August 31, 2016

Recorded as MICHAEL STOCK, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) August 31, 2016

Ophthalmology (License #2012018834 in MO)

🟢

Initial NPI Registration & Enumeration June 18, 2012

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: 1730442500

Entity Type:

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

Enumeration Date: June 18, 2012

Last Update: December 11, 2025

Sole Proprietor: No

Update or Correct Profile

Mailing Address

705 Insight Ave

O Fallon, IL 622692146

Phone: 6183911660

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.