Active NPI 1548260961 Individual Practitioner Male Practitioner

Dr. John M Hahn , MD

Ophthalmology • Sterling, IL

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. John Hahn, MD is a certified Ophthalmology practicing in Sterling, IL. With approximately 29 years of clinical experience since graduating from Northwestern University Feinberg Medical School in 1997, Dr. Hahn delivers high-quality medical care to the local community at 10 W 3RD ST.

Dr. Hahn is affiliated with Cgh Medical Center and accepts Medicare assignment.

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

Practice Location & Contact Primary Location

Practice Address

10 W 3rd St

Sterling, IL 610813503

Telephone 8156254790

Associated Practice Facility / Clinic

🏢 Cgh Medical Center Facility NPI 1811014525

Medicare Profile & Education

Medical School

Northwestern University Feinberg Medical School

Graduation Year

1997

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Ophthalmology in Sterling, IL

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

29 Yrs -2.0 yrs vs City Avg

City Avg: 31.0 Yrs

State Avg: 31.1 Yrs

Regional Practice Density

2 Specialists

Practicing in Sterling, IL (954 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

91.5% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Hahn (29 Years) 29 Yrs

Sterling Specialty Average (31.0 Years) 31.0 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
99213 Established patient office or other outpatient visit, typically 15 minutes	1,209	921	$117.52	$63.99
66984 Removal of cataract with insertion of lens	852	205	$4089.52	$183.43
92136 Measurement of corneal curvature and depth of eye	463	280	$258.87	$28.39
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	405	362	$184.33	$93.92
92133 Imaging of optic nerve	255	217	$145.69	$20.19
92134 Imaging of retina	198	156	$146.09	$23.35
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	168	168	$296.01	$129.83
92083 Exam of visual field with extended testing	150	149	$219.41	$25.28
66982 Complex removal of cataract with insertion of prosthetic lens	140	39	$4973.83	$257.77
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	103	103	$183.08	$79.99
66821 Removal of recurring cataract in lens capsule using a laser	92	88	$1613.02	$345.48
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	77	54	$63.45	$34.46
66991 Extracapsular removal of cataract with insertion of artificial lens and insertion of drainage device in front chamber of eye	34	12	$6235.79	$292.11

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	1,154	895	$111.56	$65.12
66984 Removal of cataract with insertion of lens	656	290	$6986.47	$347.05
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	580	496	$174.12	$95.77
92136 Measurement of corneal curvature and depth of eye	539	329	$245.30	$29.13
92133 Imaging of optic nerve	253	221	$138.47	$20.71
92134 Imaging of retina	202	168	$138.70	$23.94
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	164	164	$289.13	$131.91
92083 Exam of visual field with extended testing	152	151	$208.68	$25.94
66821 Removal of recurring cataract in lens capsule using a laser	104	102	$1584.51	$344.88
66982 Complex removal of cataract with insertion of prosthetic lens	91	39	$6613.87	$369.21
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	88	88	$172.93	$82.31
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	72	57	$61.90	$35.17
66991 Extracapsular removal of cataract with insertion of artificial lens and insertion of drainage device in front chamber of eye	20	11	$11131.68	$548.63

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	1,244	934	$104.91	$66.30
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	539	427	$164.87	$97.11
92136 Measurement of corneal curvature and depth of eye	524	322	$232.15	$29.55
66984 Removal of cataract with insertion of lens	458	224	$7198.23	$376.83
92134 Imaging of retina	242	189	$131.35	$24.52
92133 Imaging of optic nerve	217	192	$130.42	$21.18
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	214	214	$268.85	$134.81
92083 Exam of visual field with extended testing	157	153	$196.57	$26.25
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	147	117	$56.59	$36.45
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	112	112	$164.23	$83.24
66821 Removal of recurring cataract in lens capsule using a laser	109	109	$1459.63	$351.17
66982 Complex removal of cataract with insertion of prosthetic lens	57	37	$9473.49	$573.76
66991 Extracapsular removal of cataract with insertion of artificial lens and insertion of drainage device in front chamber of eye	25	18	$10623.04	$578.92

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	1,161	924	$99.53	$83.12
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	730	580	$154.49	$119.93
66984 Removal of cataract with insertion of lens	555	282	$6974.97	$392.73
92136 Measurement of corneal curvature and depth of eye	493	315	$219.28	$29.73
92134 Imaging of retina	241	196	$122.85	$24.73
92133 Imaging of optic nerve	235	198	$122.23	$21.39
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	210	210	$249.98	$157.51
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	209	166	$53.65	$49.99
92083 Exam of visual field with extended testing	162	160	$184.79	$26.47
66821 Removal of recurring cataract in lens capsule using a laser	158	155	$1363.05	$365.06
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	119	119	$154.66	$103.23
66982 Complex removal of cataract with insertion of prosthetic lens	65	43	$8688.97	$552.73
76519 Ultrasound of eye for determination of lens power	45	31	$388.16	$29.79
0191T Internal insertion of eye fluid drainage device	27	18	$5112.89	$338.12

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	1,122	1,046	$147.36	$100.27
66984 Removal of cataract with insertion of lens	453	228	$6307.14	$389.30
99213 Established patient office or other outpatient visit, typically 15 minutes	434	257	$94.58	$68.43
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	399	289	$51.47	$39.33
92136 Measurement of corneal curvature and depth of eye	357	232	$206.71	$31.06
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	259	259	$236.01	$153.84
92133 Imaging of optic nerve	236	213	$116.19	$22.21
92134 Imaging of retina	218	185	$116.11	$25.46
66821 Removal of recurring cataract in lens capsule using a laser	149	145	$1291.29	$367.54
92083 Exam of visual field with extended testing	145	138	$175.34	$27.62
66982 Complex removal of cataract with insertion of prosthetic lens	43	29	$8984.84	$645.43
76519 Ultrasound of eye for determination of lens power	32	24	$370.25	$31.13
99202 New patient office or other outpatient visit, typically 20 minutes	30	30	$101.60	$68.83

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	1,354	1,235	$137.80	$78.46
99213 Established patient office or other outpatient visit, typically 15 minutes	592	353	$88.75	$50.99
66984 Removal of cataract with insertion of lens	561	245	$5256.78	$401.36
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	517	343	$47.97	$25.53
92136 Measurement of corneal curvature and depth of eye	449	284	$194.47	$31.12
92133 Imaging of optic nerve	348	285	$109.26	$22.09
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	322	322	$226.19	$129.68
92134 Imaging of retina	280	239	$109.43	$25.51
66821 Removal of recurring cataract in lens capsule using a laser	233	226	$1231.27	$360.80
92083 Exam of visual field with extended testing	218	210	$163.70	$27.70
66982 Complex removal of cataract with insertion of prosthetic lens	51	33	$7514.98	$595.74
99202 New patient office or other outpatient visit, typically 20 minutes	30	30	$95.20	$49.16
0191T Internal insertion of eye fluid drainage device	23	16	$4514.09	$325.12
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	16	16	$135.50	$76.72
76519 Ultrasound of eye for determination of lens power	14	13	$339.57	$31.13

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	1,305	1,184	$129.39	$77.44
66984 Removal of cataract with insertion of lens	584	243	$4753.29	$380.68
99213 Established patient office or other outpatient visit, typically 15 minutes	522	351	$82.43	$50.71
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	396	271	$44.97	$25.25
92136 Measurement of corneal curvature and depth of eye	378	248	$183.56	$30.65
92133 Imaging of optic nerve	297	283	$102.30	$22.10
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	269	269	$209.84	$128.31
66821 Removal of recurring cataract in lens capsule using a laser	248	243	$1179.29	$361.52
92134 Imaging of retina	219	186	$102.30	$25.52
92083 Exam of visual field with extended testing	183	180	$153.90	$27.28
66982 Complex removal of cataract with insertion of prosthetic lens	55	36	$6850.63	$595.71
99202 New patient office or other outpatient visit, typically 20 minutes	29	29	$89.76	$48.85
0191T Internal insertion of eye fluid drainage device	28	19	$4286.29	$319.58
76519 Ultrasound of eye for determination of lens power	23	18	$321.91	$30.66
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	12	12	$128.33	$76.37

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	1,337	1,212	$122.07	$77.38
66984 Removal of cataract with insertion of lens	684	346	$5376.87	$464.85
99213 Established patient office or other outpatient visit, typically 15 minutes	553	354	$77.86	$50.26
92136 Measurement of corneal curvature and depth of eye	518	344	$172.82	$30.37
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	446	329	$42.28	$25.07
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	364	364	$197.49	$128.16
92133 Imaging of optic nerve	263	253	$96.90	$22.03
66821 Removal of recurring cataract in lens capsule using a laser	262	252	$1087.44	$350.68
92134 Imaging of retina	157	136	$96.41	$24.93
92083 Exam of visual field with extended testing	156	151	$145.85	$27.20
66982 Complex removal of cataract with insertion of prosthetic lens	71	51	$7639.12	$696.46
0191T Internal insertion of eye fluid drainage device	41	26	$4055.85	$436.44
99202 New patient office or other outpatient visit, typically 20 minutes	26	26	$88.31	$50.10
76519 Ultrasound of eye for determination of lens power	19	17	$304.11	$30.58
67840 Removal of eyelid growth	14	14	$238.46	$153.19

Medical Specialties & State Licenses

Ophthalmology Primary Specialty

NUCC Taxonomy Code: 207W00000X

State License IL 036-124630

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.

Hospital & Practice Group Affiliations

Cgh Medical Center

101 E Miller Rd, Sterling, IL 610811252

Phone: 8156254790

Cgh Medical Center

100 E Le Fevre Rd, Sterling, IL 610811278

Phone: 8156250400

Cgh Medical Center

10 W 3rd St, Sterling, IL 610813503

Phone: 8156325300

Cgh Medical Center

100 E Lefevre Rd, Sterling, IL 610811278

Practice Associates & Co-Workers

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

40 Associated Practitioners

Dr. David Bruce , MD

Otolaryngology - Sleep Medicine

NPI 1003998550

Doctor of Medicine (M.D.)

Karen Habben , OT

Occupational Therapist

NPI 1003998576

Occupational Therapist

Laurie Buckman

Midwife

NPI 1013473305

Dr. Hussein Zaioor , MD

Internal Medicine - Infectious Disease

NPI 1013919943

Doctor of Medicine (M.D.)

Dr. Jeffrey Thormeyer , MD

Specialist

NPI 1043421274

Doctor of Medicine (M.D.)

Polly Nobis , NP

Nurse Practitioner

NPI 1063500304

Nurse Practitioner

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active August 09, 2012

NPI status registered as active in NPPES database

📍

Updated Practice Location August 09, 2012

Registered at 10 W 3RD ST, STERLING, IL 610813503 (Tel: 8156254790)

📍

Updated Business Mailing Address August 09, 2012

Registered at 101 E MILLER RD, STERLING, IL 610811252 (Tel: 8156254790)

👤

Provider Name / Credentials Updated August 09, 2012

Recorded as JOHN HAHN, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) August 09, 2012

Ophthalmology (License #036-124630 in IL)

🟢

Initial NPI Registration & Enumeration July 28, 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: 1548260961

Entity Type:

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

Enumeration Date: July 28, 2005

Last Update: August 09, 2012

Sole Proprietor: No

Update or Correct Profile

Mailing Address

101 E Miller Rd

Sterling, IL 610811252

Phone: 8156254790

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.