Active NPI 1730359100 Individual Practitioner Female Practitioner

Dr. Joann Cong Yin Chang , MD

Ophthalmology • Lancaster, MA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Joann Chang, MD is a certified Ophthalmology practicing in Lancaster, MA. With approximately 22 years of clinical experience since graduating from University Of Cincinnati College Of Medicine in 2004, Dr. Chang delivers high-quality medical care to the local community at 479 OLD UNION TPKE.

Dr. Chang is affiliated with D'Ambrosio Eye Care Inc and accepts Medicare assignment.

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

Practice Location & Contact Primary Location

Practice Address

479 Old Union Tpke

Lancaster, MA 015233029

Telephone 9785373900

Fax 9785376030

Associated Practice Facility / Clinic

🏢 D'ambrosio Eye Care, Inc. Facility NPI 1922020874

Medicare Profile & Education

Medical School

University Of Cincinnati College Of Medicine

Graduation Year

2004

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Ophthalmology in Lancaster, MA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

22 Yrs Matches City Avg

City Avg: 22.0 Yrs

State Avg: 30.8 Yrs

Regional Practice Density

6 Specialists

Practicing in Lancaster, MA (841 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

67.9% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Chang (22 Years) 22 Yrs

Lancaster Specialty Average (22.0 Years) 22.0 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
92136 Measurement of corneal curvature and depth of eye	605	267	$126.33	$25.26
99213 Established patient office or other outpatient visit, typically 15 minutes	569	397	$230.00	$93.48
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	355	318	$325.00	$131.54
66984 Removal of cataract with insertion of lens	310	176	$1910.00	$554.97
92134 Imaging of retina	235	219	$140.00	$40.90
68841 Insertion of drug delivery implant into tear duct of eye	210	124	$85.00	$16.52
92286 Imaging of front third of eye using a special microscope	190	170	$205.00	$40.27
68761 Closure of tear duct opening using plug	102	85	$746.03	$201.53
92014 Established patient complete exam of visual system	98	98	$370.00	$131.35
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	92	92	$485.00	$170.42
92250 Photography of the retina	78	77	$244.04	$38.06
66821 Removal of recurring cataract in lens capsule using a laser	64	52	$990.00	$346.37
92083 Exam of visual field with extended testing	30	25	$200.00	$65.16
76514 Ultrasound scan of cornea to determine thickness	29	25	$50.00	$10.95
92285 Photography of content of eyes	29	27	$70.00	$24.54
66982 Complex removal of cataract with insertion of prosthetic lens	24	17	$2360.00	$761.40
92004 New patient complete exam of visual system	24	24	$445.00	$154.97
92133 Imaging of optic nerve	18	18	$140.00	$36.89
92025 Ct scan of cornea	13	13	$115.00	$36.68
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	12	12	$320.00	$114.38
65756 Transplantation of outer layer of corneal tissue	11	11	$3515.00	$1199.35

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	607	394	$230.00	$93.65
92136 Measurement of corneal curvature and depth of eye	474	213	$124.77	$25.86
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	293	259	$325.00	$131.40
66984 Removal of cataract with insertion of lens	282	161	$1910.00	$556.91
92134 Imaging of retina	230	215	$139.61	$41.30
68761 Closure of tear duct opening using plug	149	121	$752.62	$206.22
92286 Imaging of front third of eye using a special microscope	139	127	$205.00	$40.56
68841 Insertion of drug delivery implant into tear duct of eye	137	95	$85.00	$16.81
92014 Established patient complete exam of visual system	91	91	$370.00	$132.74
92250 Photography of the retina	88	88	$244.15	$38.89
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	82	82	$485.00	$171.56
66821 Removal of recurring cataract in lens capsule using a laser	58	49	$990.00	$345.78
92285 Photography of content of eyes	42	40	$70.00	$24.47
92083 Exam of visual field with extended testing	34	27	$200.00	$63.84
92004 New patient complete exam of visual system	24	24	$445.00	$156.84
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	22	22	$320.00	$116.53
92133 Imaging of optic nerve	17	17	$140.00	$37.37
76514 Ultrasound scan of cornea to determine thickness	16	16	$50.00	$11.22
68760 Repair duct opening	15	11	$605.00	$232.15
92025 Ct scan of cornea	13	12	$115.00	$36.07
92012 Established patient problem focused exam of visual system	13	13	$255.00	$94.69

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	592	364	$230.00	$95.06
92136 Measurement of corneal curvature and depth of eye	479	212	$126.08	$27.78
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	372	330	$325.00	$134.81
66984 Removal of cataract with insertion of lens	260	152	$1910.00	$560.89
92134 Imaging of retina	212	196	$140.00	$42.60
68841 Insertion of drug delivery implant into tear duct of eye	183	108	$85.00	$16.88
68761 Closure of tear duct opening using plug	142	116	$767.78	$215.34
92286 Imaging of front third of eye using a special microscope	133	123	$205.00	$39.48
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	80	80	$485.00	$175.33
92250 Photography of the retina	65	64	$241.23	$38.51
92014 Established patient complete exam of visual system	63	63	$370.00	$132.71
66821 Removal of recurring cataract in lens capsule using a laser	59	46	$990.00	$351.96
92285 Photography of content of eyes	44	42	$70.00	$24.75
92083 Exam of visual field with extended testing	34	28	$200.00	$67.07
92133 Imaging of optic nerve	32	30	$140.00	$37.89
66982 Complex removal of cataract with insertion of prosthetic lens	26	16	$2350.00	$777.05
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	16	16	$320.00	$118.40
92012 Established patient problem focused exam of visual system	13	13	$255.00	$95.69
92004 New patient complete exam of visual system	13	13	$445.00	$159.94

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	591	363	$211.12	$96.63
92136 Measurement of corneal curvature and depth of eye	470	211	$125.56	$29.85
66984 Removal of cataract with insertion of lens	270	157	$1853.87	$567.03
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	240	223	$311.31	$136.33
0356T Insertion of drug delivery implant into tear ducts	228	134	$210.00	$86.38
92134 Imaging of retina	194	181	$135.10	$42.76
68761 Closure of tear duct opening using plug	156	130	$756.06	$218.60
92286 Imaging of front third of eye using a special microscope	118	114	$200.47	$39.22
92250 Photography of the retina	66	64	$235.61	$41.22
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	64	64	$470.70	$177.43
66821 Removal of recurring cataract in lens capsule using a laser	55	44	$961.09	$358.06
92014 Established patient complete exam of visual system	48	48	$360.83	$135.31
92285 Photography of content of eyes	45	45	$65.11	$24.81
92012 Established patient problem focused exam of visual system	44	43	$250.11	$96.66
92083 Exam of visual field with extended testing	34	27	$195.29	$68.14
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	32	32	$310.63	$119.06
11440 Removal of noncancer skin growth of face, ears, eyelids, nose, lips, or mouth, 0.5 cm or less	26	25	$395.00	$151.99
68760 Repair duct opening	20	13	$590.75	$242.52
92133 Imaging of optic nerve	19	19	$135.00	$38.17
76512 Ultrasound of eye disease, growth, or structure	16	13	$275.63	$51.95
92025 Ct scan of cornea	15	14	$115.00	$37.41
76514 Ultrasound scan of cornea to determine thickness	13	13	$50.00	$11.70

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92136 Measurement of corneal curvature and depth of eye	379	166	$124.20	$33.50
92012 Established patient problem focused exam of visual system	352	274	$240.80	$94.70
99213 Established patient office or other outpatient visit, typically 15 minutes	331	242	$202.92	$79.71
66984 Removal of cataract with insertion of lens	194	116	$1818.04	$586.56
92134 Imaging of retina	192	171	$132.47	$42.89
68761 Closure of tear duct opening using plug	147	125	$736.43	$221.61
92286 Imaging of front third of eye using a special microscope	146	139	$180.45	$38.87
92014 Established patient complete exam of visual system	144	142	$341.49	$134.79
92250 Photography of the retina	59	56	$229.92	$47.36
66821 Removal of recurring cataract in lens capsule using a laser	51	42	$923.33	$358.35
92083 Exam of visual field with extended testing	35	32	$199.29	$66.92
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	30	30	$465.00	$175.37
92285 Photography of content of eyes	27	24	$68.33	$23.28
92004 New patient complete exam of visual system	24	24	$415.00	$161.28
68760 Repair duct opening	22	17	$565.00	$222.96
92002 New patient problem focused exam of visual system	21	21	$218.57	$90.17
92133 Imaging of optic nerve	20	20	$131.50	$39.30
67028 Injection of drug into eye	20	17	$307.75	$107.65
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	15	15	$303.33	$115.85
11440 Removal of noncancer skin growth of face, ears, eyelids, nose, lips, or mouth, 0.5 cm or less	14	13	$380.00	$151.94
0356T Insertion of drug delivery implant into tear ducts	14	14	$210.00	$83.41
76514 Ultrasound scan of cornea to determine thickness	13	13	$55.77	$12.06
92025 Ct scan of cornea	11	11	$109.55	$38.94

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	462	314	$175.00	$78.27
92012 Established patient problem focused exam of visual system	331	252	$205.00	$93.05
92136 Measurement of corneal curvature and depth of eye	308	133	$118.99	$35.86
92014 Established patient complete exam of visual system	213	213	$295.00	$134.25
92134 Imaging of retina	199	175	$125.00	$42.80
68761 Closure of tear duct opening using plug	174	140	$595.75	$209.70
66984 Removal of cataract with insertion of lens	172	103	$1659.59	$679.18
92286 Imaging of front third of eye using a special microscope	133	130	$310.00	$38.33
92250 Photography of the retina	57	56	$215.00	$52.39
92083 Exam of visual field with extended testing	48	43	$210.00	$67.53
92133 Imaging of optic nerve	48	47	$122.40	$38.15
92004 New patient complete exam of visual system	39	39	$355.00	$156.00
66821 Removal of recurring cataract in lens capsule using a laser	34	25	$790.00	$348.32
92285 Photography of content of eyes	31	30	$110.00	$23.01
92002 New patient problem focused exam of visual system	24	24	$195.00	$89.21
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	22	21	$260.00	$114.87
66982 Complex removal of cataract with insertion of prosthetic lens	19	12	$1830.00	$844.25
68760 Repair duct opening	19	18	$505.26	$229.37
67028 Injection of drug into eye	16	12	$550.00	$108.12
76514 Ultrasound scan of cornea to determine thickness	13	13	$75.00	$12.62
11440 Removal of noncancer skin growth of face, ears, eyelids, nose, lips, or mouth, 0.5 cm or less	11	11	$325.00	$147.89
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	11	11	$260.00	$114.43

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	496	329	$175.00	$75.91
92134 Imaging of retina	372	242	$125.00	$43.63
92012 Established patient problem focused exam of visual system	288	228	$205.00	$91.61
67028 Injection of drug into eye	234	109	$550.00	$107.23
92014 Established patient complete exam of visual system	224	223	$295.00	$131.98
92136 Measurement of corneal curvature and depth of eye	222	102	$118.47	$39.40
68761 Closure of tear duct opening using plug	192	151	$575.03	$206.39
J0178 Injection, aflibercept, 1 mg	192	49	$1050.00	$953.43
J9035 Injection, bevacizumab, 10 mg	118	64	$250.00	$76.87
92250 Photography of the retina	116	111	$215.00	$57.76
66984 Removal of cataract with insertion of lens	113	66	$1650.00	$674.83
92286 Imaging of front third of eye using a special microscope	106	101	$310.00	$38.32
92083 Exam of visual field with extended testing	54	43	$210.00	$68.04
92133 Imaging of optic nerve	54	54	$125.00	$39.13
92004 New patient complete exam of visual system	45	45	$355.00	$159.21
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	45	44	$260.00	$112.66
92285 Photography of content of eyes	45	42	$110.00	$21.50
92002 New patient problem focused exam of visual system	34	34	$195.00	$87.90
68760 Repair duct opening	33	25	$480.00	$207.32
92235 Exam of retinal blood vessels using a special camera after injection of a dye	28	26	$350.00	$91.13
66821 Removal of recurring cataract in lens capsule using a laser	24	19	$790.00	$349.84
76514 Ultrasound scan of cornea to determine thickness	21	19	$75.00	$15.27
66982 Complex removal of cataract with insertion of prosthetic lens	19	15	$1830.00	$837.68
11440 Removal of noncancer skin growth of face, ears, eyelids, nose, lips, or mouth, 0.5 cm or less	17	17	$325.00	$144.57
92025 Ct scan of cornea	15	14	$95.00	$40.05
92020 Examination of cornea and iris using lens device and slit lamp	11	11	$65.00	$28.10

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	384	250	$171.64	$74.91
92014 Established patient complete exam of visual system	223	222	$288.05	$127.77
92136 Measurement of corneal curvature and depth of eye	222	98	$118.69	$43.19
92012 Established patient problem focused exam of visual system	188	153	$202.39	$88.66
68761 Closure of tear duct opening using plug	162	127	$583.77	$201.31
92250 Photography of the retina	134	128	$215.00	$68.63
92134 Imaging of retina	123	107	$125.00	$41.95
66984 Removal of cataract with insertion of lens	113	64	$1650.00	$661.52
92004 New patient complete exam of visual system	89	89	$342.36	$153.79
92286 Imaging of front third of eye using a special microscope	86	79	$296.51	$38.84
J0178 Injection, aflibercept, 1 mg	50	20	$1050.00	$921.60
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	49	48	$253.06	$110.83
67028 Injection of drug into eye	47	36	$550.00	$103.53
92083 Exam of visual field with extended testing	40	32	$200.25	$64.92
92133 Imaging of optic nerve	37	36	$125.00	$37.98
92285 Photography of content of eyes	36	36	$106.81	$21.50
66821 Removal of recurring cataract in lens capsule using a laser	29	21	$772.41	$344.05
92002 New patient problem focused exam of visual system	23	23	$192.17	$84.62
J9035 Injection, bevacizumab, 10 mg	21	16	$250.00	$73.87
68760 Repair duct opening	20	15	$492.75	$196.67
76514 Ultrasound scan of cornea to determine thickness	18	18	$75.00	$14.65
66982 Complex removal of cataract with insertion of prosthetic lens	16	12	$1830.00	$824.25
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	11	11	$255.45	$112.10

Medical Specialties & State Licenses

CMS Verified: 2022-05-02

Ophthalmology Primary Specialty

NUCC Taxonomy Code: 207W00000X

State License MA 243192

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 NY 267568

Hospital & Practice Group Affiliations

D'ambrosio Eye Care Inc

479 Old Union Tpke, Lancaster, MA 015233029

Phone: 9785373900

Practice Associates & Co-Workers

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

40 Associated Practitioners

Jessica Jones

Technician/Technologist - Optician

NPI 1023561693

Steven Buffone

Technician/Technologist - Optician

NPI 1063965754

Dr. Elite Bor-Shavit , MD

Ophthalmology - Retina Specialist

NPI 1104303858

Doctor of Medicine (M.D.)

Dr. Judy Bavongkhoun , OD

Optometrist

NPI 1104374628

Doctor of Optometry

Dr. Meritza Kluge , OD

Optometrist

NPI 1134450752

Doctor of Optometry

Dr. Michael Fu , OD

Optometrist

NPI 1154342624

Doctor of Optometry

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active May 07, 2015

NPI status registered as active in NPPES database

📍

Updated Practice Location May 07, 2015

Registered at 479 OLD UNION TPKE, LANCASTER, MA 015233029 (Tel: 9785373900)

📍

Updated Business Mailing Address May 07, 2015

Registered at 479 OLD UNION TPKE, LANCASTER, MA 015233029 (Tel: 9785373900)

👤

Provider Name / Credentials Updated May 07, 2015

Recorded as JOANN CHANG, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) May 07, 2015

Ophthalmology (License #243192 in MA)

🟢

Initial NPI Registration & Enumeration March 02, 2008

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: 1730359100

Entity Type:

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

Enumeration Date: March 02, 2008

Last Update: May 02, 2022

Sole Proprietor: No

Update or Correct Profile

Mailing Address

479 Old Union Tpke

Lancaster, MA 015233029

Phone: 9785373900

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.