Active NPI 1043216732 Individual Practitioner Female Practitioner

Dr. Ann Katherine Williams Md , MD

Ophthalmology • Hammond, IN

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Ann Williams Md, MD is a certified Ophthalmology practicing in Hammond, IN. With approximately 43 years of clinical experience since graduating from Northwestern University Feinberg Medical School in 1983, Dr. Williams Md delivers high-quality medical care to the local community at 6850 HOHMAN AVE.

Dr. Williams Md is affiliated with Williams Eye Institute Pc and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient complete exam of visual system, 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

6850 Hohman Ave

Hammond, IN 463241410

Telephone 2199317509

Associated Practice Facility / Clinic

🏢 Williams Eye Institute, Pc Facility NPI 1407852106

Medicare Profile & Education

Medical School

Northwestern University Feinberg Medical School

Graduation Year

1983

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Ophthalmology in Hammond, IN

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

43 Yrs +26.5 yrs vs City Avg

City Avg: 16.5 Yrs

State Avg: 27.7 Yrs

Regional Practice Density

5 Specialists

Practicing in Hammond, IN (339 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

72.5% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Williams Md (43 Years) 43 Yrs

Hammond Specialty Average (16.5 Years) 16.5 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
92014 Established patient complete exam of visual system	1,084	1,047	$140.00	$117.01
66984 Removal of cataract with insertion of lens	459	231	$2415.15	$401.72
92136 Measurement of corneal curvature and depth of eye	432	275	$270.33	$37.17
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	290	232	$130.00	$118.87
92133 Imaging of optic nerve	187	182	$85.00	$33.14
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	161	161	$180.00	$154.18
66821 Removal of recurring cataract in lens capsule using a laser	159	96	$1028.05	$238.72
92134 Imaging of retina	151	142	$85.00	$36.86
99213 Established patient office or other outpatient visit, typically 15 minutes	102	87	$95.00	$83.81
92004 New patient complete exam of visual system	95	95	$165.00	$138.68
92083 Exam of visual field with extended testing	87	84	$133.00	$58.03
66982 Complex removal of cataract with insertion of prosthetic lens	30	21	$2802.67	$627.08
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	18	18	$60.00	$52.27
76514 Ultrasound scan of cornea to determine thickness	14	14	$75.00	$8.99

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92014 Established patient complete exam of visual system	1,114	1,071	$140.00	$117.98
66984 Removal of cataract with insertion of lens	466	244	$2547.84	$428.68
92136 Measurement of corneal curvature and depth of eye	461	287	$261.54	$36.67
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	280	219	$130.00	$118.15
92133 Imaging of optic nerve	188	187	$85.00	$33.61
66821 Removal of recurring cataract in lens capsule using a laser	186	107	$1031.48	$237.11
92004 New patient complete exam of visual system	161	161	$165.00	$139.71
99213 Established patient office or other outpatient visit, typically 15 minutes	138	102	$95.00	$83.72
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	130	130	$180.00	$153.31
92134 Imaging of retina	119	115	$85.00	$36.83
92083 Exam of visual field with extended testing	106	100	$133.00	$57.83
66982 Complex removal of cataract with insertion of prosthetic lens	56	40	$2527.41	$553.16
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	25	23	$60.00	$52.49
76514 Ultrasound scan of cornea to determine thickness	13	13	$75.00	$9.32
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	13	13	$120.00	$103.86

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92014 Established patient complete exam of visual system	1,112	1,068	$140.00	$118.08
66984 Removal of cataract with insertion of lens	559	290	$2505.89	$422.26
92136 Measurement of corneal curvature and depth of eye	553	357	$263.94	$38.60
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	235	189	$130.00	$119.23
92004 New patient complete exam of visual system	196	196	$165.00	$139.98
92133 Imaging of optic nerve	194	189	$85.00	$34.11
99213 Established patient office or other outpatient visit, typically 15 minutes	167	149	$95.00	$83.05
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	154	154	$180.00	$154.80
66821 Removal of recurring cataract in lens capsule using a laser	126	84	$1119.09	$264.26
92083 Exam of visual field with extended testing	119	114	$133.00	$58.24
66982 Complex removal of cataract with insertion of prosthetic lens	65	49	$2775.08	$613.06
92134 Imaging of retina	64	62	$85.00	$37.01
92012 Established patient problem focused exam of visual system	54	53	$95.00	$84.16
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	38	33	$60.00	$51.58
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	11	11	$120.00	$98.05
76514 Ultrasound scan of cornea to determine thickness	11	11	$75.00	$10.06
67820 Removal of eyelashes using forceps	11	11	$126.55	$18.88

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92014 Established patient complete exam of visual system	1,224	1,213	$140.00	$120.27
92136 Measurement of corneal curvature and depth of eye	585	369	$270.56	$42.56
66984 Removal of cataract with insertion of lens	534	275	$2479.85	$425.39
92004 New patient complete exam of visual system	396	396	$165.00	$143.06
99213 Established patient office or other outpatient visit, typically 15 minutes	293	238	$94.39	$86.12
92133 Imaging of optic nerve	261	257	$85.00	$34.89
92012 Established patient problem focused exam of visual system	257	237	$95.00	$84.99
92083 Exam of visual field with extended testing	163	158	$133.00	$59.47
66821 Removal of recurring cataract in lens capsule using a laser	146	91	$1022.95	$243.24
92134 Imaging of retina	127	113	$85.00	$38.36
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	122	104	$59.71	$53.10
66982 Complex removal of cataract with insertion of prosthetic lens	99	59	$2585.10	$579.04
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	51	51	$129.61	$109.53
83861 Microfluid analysis of tears	28	14	$50.00	$22.48
76519 Ultrasound of eye for determination of lens power	13	11	$319.46	$58.16
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	13	13	$180.00	$155.60
76514 Ultrasound scan of cornea to determine thickness	12	12	$75.00	$10.30

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92014 Established patient complete exam of visual system	1,148	1,140	$140.00	$120.75
92136 Measurement of corneal curvature and depth of eye	404	255	$267.26	$46.85
66984 Removal of cataract with insertion of lens	402	215	$2508.67	$441.59
99213 Established patient office or other outpatient visit, typically 15 minutes	295	243	$80.00	$70.68
92133 Imaging of optic nerve	265	260	$85.00	$35.23
92004 New patient complete exam of visual system	261	261	$165.00	$143.72
92012 Established patient problem focused exam of visual system	204	194	$95.00	$84.64
92083 Exam of visual field with extended testing	159	156	$133.00	$59.28
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	151	151	$120.00	$99.40
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	138	113	$55.00	$42.57
66821 Removal of recurring cataract in lens capsule using a laser	115	72	$984.87	$235.27
92134 Imaging of retina	84	74	$85.00	$37.80
66982 Complex removal of cataract with insertion of prosthetic lens	65	48	$2635.15	$606.08
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	35	35	$180.00	$147.04
76514 Ultrasound scan of cornea to determine thickness	27	27	$75.00	$10.63
67820 Removal of eyelashes using forceps	14	13	$132.57	$28.21
99202 New patient office or other outpatient visit, typically 20 minutes	13	13	$81.00	$71.97

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92014 Established patient complete exam of visual system	1,261	1,254	$140.00	$119.71
66984 Removal of cataract with insertion of lens	623	321	$2510.72	$505.43
92136 Measurement of corneal curvature and depth of eye	581	376	$266.05	$50.20
99213 Established patient office or other outpatient visit, typically 15 minutes	485	365	$80.00	$69.02
92004 New patient complete exam of visual system	323	323	$165.00	$143.11
92133 Imaging of optic nerve	308	303	$85.00	$34.93
92012 Established patient problem focused exam of visual system	303	280	$95.00	$83.26
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	302	302	$120.00	$100.41
92083 Exam of visual field with extended testing	235	230	$133.00	$59.71
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	180	141	$55.00	$42.08
66821 Removal of recurring cataract in lens capsule using a laser	145	98	$1078.55	$252.55
92134 Imaging of retina	99	82	$85.00	$38.64
66982 Complex removal of cataract with insertion of prosthetic lens	70	42	$2459.29	$580.84
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	56	56	$180.00	$145.40
0191T Internal insertion of eye fluid drainage device	37	22	$3000.00	$600.17
0376T Insertion of eye drainage device	37	22	$1500.00	$300.09
76514 Ultrasound scan of cornea to determine thickness	29	29	$75.00	$11.04
83861 Microfluid analysis of tears	28	14	$50.00	$22.03
99202 New patient office or other outpatient visit, typically 20 minutes	21	21	$81.00	$70.10
92020 Examination of cornea and iris using lens device and slit lamp	12	12	$52.00	$26.40

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92014 Established patient complete exam of visual system	1,525	1,517	$140.00	$118.99
66984 Removal of cataract with insertion of lens	719	353	$2382.93	$471.00
92136 Measurement of corneal curvature and depth of eye	668	429	$270.25	$55.63
92012 Established patient problem focused exam of visual system	486	400	$95.00	$82.32
99213 Established patient office or other outpatient visit, typically 15 minutes	393	328	$80.00	$68.02
92004 New patient complete exam of visual system	384	384	$165.00	$142.37
92133 Imaging of optic nerve	307	302	$85.00	$35.35
92083 Exam of visual field with extended testing	237	235	$133.00	$60.01
66821 Removal of recurring cataract in lens capsule using a laser	183	114	$1025.71	$244.66
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	109	95	$55.00	$41.08
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	95	95	$120.00	$99.99
92134 Imaging of retina	91	81	$85.00	$39.15
66982 Complex removal of cataract with insertion of prosthetic lens	86	57	$2487.33	$588.88
83861 Microfluid analysis of tears	76	37	$50.00	$22.03
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	25	25	$180.00	$145.98
76514 Ultrasound scan of cornea to determine thickness	22	22	$75.00	$13.63
0191T Internal insertion of eye fluid drainage device	21	12	$3000.00	$596.02
76519 Ultrasound of eye for determination of lens power	21	16	$294.14	$56.19
67820 Removal of eyelashes using forceps	21	19	$163.43	$43.56
99202 New patient office or other outpatient visit, typically 20 minutes	14	14	$81.00	$70.59
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	13	13	$120.00	$100.75
67800 Removal of eyelid growth	11	11	$300.00	$120.99

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92014 Established patient complete exam of visual system	1,690	1,676	$140.00	$116.57
66984 Removal of cataract with insertion of lens	688	329	$2314.61	$459.13
92136 Measurement of corneal curvature and depth of eye	640	398	$267.40	$60.86
92012 Established patient problem focused exam of visual system	481	397	$95.00	$79.89
92004 New patient complete exam of visual system	404	404	$165.00	$140.60
99213 Established patient office or other outpatient visit, typically 15 minutes	323	272	$80.00	$68.50
92133 Imaging of optic nerve	322	319	$85.00	$35.27
92083 Exam of visual field with extended testing	197	195	$133.00	$60.07
83861 Microfluid analysis of tears	184	91	$50.00	$22.21
66821 Removal of recurring cataract in lens capsule using a laser	170	108	$1022.26	$235.25
66982 Complex removal of cataract with insertion of prosthetic lens	110	63	$2354.68	$552.62
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	90	78	$55.00	$40.66
92134 Imaging of retina	66	59	$85.00	$38.59
67820 Removal of eyelashes using forceps	35	24	$152.00	$58.58
76514 Ultrasound scan of cornea to determine thickness	34	33	$75.00	$13.38
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	30	30	$120.00	$99.58
76519 Ultrasound of eye for determination of lens power	23	17	$290.57	$64.23
99202 New patient office or other outpatient visit, typically 20 minutes	13	13	$81.00	$70.17

Medical Specialties & State Licenses

CMS Verified: 2025-03-06

Ophthalmology Primary Specialty

NUCC Taxonomy Code: 207W00000X

State License IN 01039204A

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 036068962

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

100465760 (IN)

Hospital & Practice Group Affiliations

Williams Eye Institute Pc

6850 Hohman Ave, Hammond, IN 463241410

Phone: 2199317509

Williams Eye Institute Pc

9797 Massachusetts St, Crown Point, IN 463070278

Williams Eye Institute Pc

9797 Massachusetts St, Crown Point, IN 463077550

Phone: 2197362200

Secondary Practice Locations

9797 Massachusetts St

Crown Point, IN 463070278

Phone: 2196492704

6836 Hohman Ave

Hammond, IN 463241410

Phone: 2199375063

Practice Associates & Co-Workers

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

3 Associated Practitioners

Dr. Blake Williams , MD

Ophthalmology

NPI 1497101018

Doctor of Medicine (M.D.)

Dr. Megan Silas , MD

Ophthalmology

NPI 1821450578

Doctor of Medicine (M.D.)

Dr. Elaine Kelly , MD

Ophthalmology

NPI 1982264206

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

21 Historical Events

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) June 03, 2020

Ophthalmology (License #036068962 in IL)

📍

Updated Business Mailing Address May 02, 2018

Registered at 6850 HOHMAN AVENUE, HAMMOND, IN 463241410 (Tel: 2199317509)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) May 02, 2018

Ophthalmology (License #01039204A in IN)

✅

NPI Profile Active March 17, 2018

NPI status registered as active in NPPES database

📍

Updated Practice Location March 17, 2018

Registered at 6850 HOHMAN AVE, HAMMOND, IN 463241410 (Tel: 2199317509)

📍

Updated Business Mailing Address March 17, 2018

Registered at 6850 HOHMAN AVE, HAMMOND, IN 463241410 (Tel: (219) 931-7509)

👤

Provider Name / Credentials Updated March 17, 2018

Recorded as ANN WILLIAMS MD, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) March 17, 2018

Ophthalmology (License #036068962 in IL)

✅

NPI Profile Active September 14, 2017

NPI status registered as active in NPPES database

📍

Updated Practice Location September 14, 2017

Registered at 6850 HOHMAN AVE, HAMMOND, IN 463241410 (Tel: 2199317509)

📍

Updated Business Mailing Address September 14, 2017

Registered at 6850 HOHMAN AVE, HAMMOND, IN 463241410 (Tel: (219) 931-7509)

👤

Provider Name / Credentials Updated September 14, 2017

Recorded as ANN WILLIAMS MD, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) September 14, 2017

Ophthalmology (License #01039204A in IN)

👤

Provider Name / Credentials Updated September 08, 2017

Recorded as ANN WILLIAMS MD, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) September 08, 2017

Ophthalmology (License #036068962 in IL)

✅

NPI Profile Active April 01, 2015

NPI status registered as active in NPPES database

📍

Updated Practice Location April 01, 2015

Registered at 6850 HOHMAN AVE, HAMMOND, IN 463241410 (Tel: 2199317509)

📍

Updated Business Mailing Address April 01, 2015

Registered at 6850 HOHMAN AVE, HAMMOND, IN 463241410 (Tel: 2199317509)

👤

Provider Name / Credentials Updated April 01, 2015

Recorded as ANN WILLIAMS, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) April 01, 2015

Ophthalmology (License #01039204A in IN)

🟢

Initial NPI Registration & Enumeration June 27, 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: 1043216732

Entity Type:

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

Enumeration Date: June 27, 2005

Last Update: March 06, 2025

Sole Proprietor: No

Update or Correct Profile

Mailing Address

6850 Hohman Avenue

Hammond, IN 463241410

Phone: 2199317509

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.