Active NPI 1407878093 Individual Practitioner Male Practitioner

Dr. Robert Michael Williams , MD

Orthopaedic Surgery • Chelsea, MI

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Robert Williams, MD is a certified Orthopaedic Surgery practicing in Chelsea, MI. With approximately 27 years of clinical experience since graduating from University Of Michigan Medical School in 1999, Dr. Williams delivers high-quality medical care to the local community at 14650 E. OLD US HWY 12.

Dr. Williams is affiliated with Iha Health Services Corporation and accepts Medicare assignment.

Frequently performed procedures and clinical services include aspiration and/or injection of fluid from large joint, established patient outpatient office visit, x-ray of knee. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

14650 E. Old Us Hwy 12
Suite 105

Chelsea, MI 48118

Telephone 7345935700

Fax 7345935705

Associated Practice Facility / Clinic

🏢 Chelsea Pain Clinic Pllc Facility NPI 1437550639

Medicare Profile & Education

Medical School

University Of Michigan Medical School

Graduation Year

1999

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Orthopaedic Surgery in Chelsea, MI

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

27 Yrs -1.8 yrs vs City Avg

City Avg: 28.8 Yrs

State Avg: 24.3 Yrs

Regional Practice Density

5 Specialists

Practicing in Chelsea, MI (1014 Statewide)

Telehealth Adoption Rate

20.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

53.2% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Williams (27 Years) 27 Yrs

Chelsea Specialty Average (28.8 Years) 28.8 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
20610 Aspiration and/or injection of fluid from large joint	280	178	$132.54	$54.01
99213 Established patient office or other outpatient visit, typically 15 minutes	201	167	$175.73	$66.12
73564 X-ray of knee, 4 or more views	111	100	$53.07	$13.60
73030 X-ray of shoulder, minimum of 2 views	61	53	$22.95	$10.40
20985 Computer-assisted surgery for muscle and bone procedure	54	52	$291.00	$148.65
27447 Replacement of knee joint, both sides of knee	54	52	$2716.00	$1316.95
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	47	47	$238.28	$83.46
73502 X-ray of hip, 2-3 views	38	37	$22.00	$10.47
23472 Prosthetic repair of shoulder joint, total shoulder	37	37	$2722.00	$1479.91
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	31	30	$259.65	$97.81
27130 Replacement of thigh bone and hip joint with prosthesis	27	27	$3175.00	$1318.38
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	21	19	$113.38	$35.74
77073 Imaging for bone length assessment	16	16	$30.00	$13.18
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	13	13	$264.00	$131.77

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
20610 Aspiration and/or injection of fluid from large joint	272	181	$203.03	$51.57
99213 Established patient office or other outpatient visit, typically 15 minutes	215	169	$156.63	$67.08
73564 X-ray of knee, 4 or more views	103	97	$48.43	$12.63
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	91	91	$211.84	$85.49
27447 Replacement of knee joint, both sides of knee	54	51	$2716.00	$1281.43
20985 Computer-assisted surgery for muscle and bone procedure	53	50	$291.00	$147.35
73030 X-ray of shoulder, minimum of 2 views	50	49	$22.80	$10.32
77073 Imaging for bone length assessment	44	38	$30.00	$13.20
27130 Replacement of thigh bone and hip joint with prosthesis	36	36	$3175.00	$1308.43
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	30	24	$96.20	$36.38
23472 Prosthetic repair of shoulder joint, total shoulder	28	28	$2722.00	$1433.35
73502 X-ray of hip, 2-3 views	23	23	$22.00	$10.91
73503 X-ray of hip with pelvis, minimum of 4 views	18	18	$30.00	$13.20
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	16	16	$224.44	$99.14
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	11	11	$264.00	$133.02

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
20610 Aspiration and/or injection of fluid from large joint	274	190	$195.08	$51.55
99213 Established patient office or other outpatient visit, typically 15 minutes	200	165	$142.22	$68.84
73564 X-ray of knee, 4 or more views	150	139	$47.30	$12.27
73030 X-ray of shoulder, minimum of 2 views	94	86	$21.49	$10.05
77073 Imaging for bone length assessment	80	68	$30.00	$13.75
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	77	77	$201.00	$87.20
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	64	53	$87.11	$37.78
27447 Replacement of knee joint, both sides of knee	62	59	$2686.21	$1326.71
20985 Computer-assisted surgery for muscle and bone procedure	58	57	$291.00	$153.84
73502 X-ray of hip, 2-3 views	41	41	$22.00	$11.16
23472 Prosthetic repair of shoulder joint, total shoulder	39	36	$2604.74	$1445.17
27130 Replacement of thigh bone and hip joint with prosthesis	30	29	$3086.10	$1291.65
73503 X-ray of hip with pelvis, minimum of 4 views	26	25	$30.00	$13.53
73020 X-ray of shoulder, 1 view	22	14	$20.00	$7.72

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
20610 Aspiration and/or injection of fluid from large joint	244	176	$189.92	$54.07
99213 Established patient office or other outpatient visit, typically 15 minutes	227	177	$133.78	$70.94
73564 X-ray of knee, 4 or more views	98	92	$41.82	$11.48
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	96	96	$196.25	$88.49
73030 X-ray of shoulder, minimum of 2 views	82	74	$20.61	$10.16
27447 Replacement of knee joint, both sides of knee	61	57	$2685.49	$1343.30
20985 Computer-assisted surgery for muscle and bone procedure	59	57	$285.92	$156.63
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	56	45	$83.64	$37.49
23472 Prosthetic repair of shoulder joint, total shoulder	54	52	$2661.72	$1542.66
77073 Imaging for bone length assessment	39	36	$28.97	$14.18
27130 Replacement of thigh bone and hip joint with prosthesis	30	29	$3117.60	$1361.11
73502 X-ray of hip, 2-3 views	29	29	$21.41	$11.48
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	21	21	$193.43	$104.56
73503 X-ray of hip with pelvis, minimum of 4 views	12	12	$28.83	$13.94

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
20610 Aspiration and/or injection of fluid from large joint	190	146	$200.19	$54.84
99213 Established patient office or other outpatient visit, typically 15 minutes	177	144	$126.62	$54.35
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	82	82	$192.22	$80.09
73564 X-ray of knee, 4 or more views	69	69	$40.09	$11.74
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	61	59	$80.08	$27.69
73030 X-ray of shoulder, minimum of 2 views	49	46	$20.90	$11.11
27447 Replacement of knee joint, both sides of knee	35	33	$3056.46	$1450.12
20985 Computer-assisted surgery for muscle and bone procedure	33	33	$277.67	$165.90
23472 Prosthetic repair of shoulder joint, total shoulder	32	27	$2613.84	$1408.84
77073 Imaging for bone length assessment	31	27	$28.00	$14.23
27130 Replacement of thigh bone and hip joint with prosthesis	23	21	$3041.74	$1411.88
73502 X-ray of hip, 2-3 views	18	18	$20.94	$11.91
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	14	14	$183.50	$83.42
73564 X-ray of knee, 4 or more views	11	11	$41.00	$11.74

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	255	203	$115.15	$53.31
20610 Aspiration and/or injection of fluid from large joint	251	194	$202.32	$54.14
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	175	129	$77.00	$26.78
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	169	169	$185.00	$80.26
73564 X-ray of knee, 4 or more views	121	110	$21.41	$12.59
73030 X-ray of shoulder, minimum of 2 views	83	80	$18.61	$10.19
73502 X-ray of hip, 2-3 views	55	52	$20.00	$11.71
77073 Imaging for bone length assessment	50	44	$26.00	$15.18
20985 Computer-assisted surgery for muscle and bone procedure	44	44	$268.00	$163.93
27447 Replacement of knee joint, both sides of knee	44	44	$3821.00	$1502.52
27130 Replacement of thigh bone and hip joint with prosthesis	26	25	$2934.00	$1501.04
23472 Prosthetic repair of shoulder joint, total shoulder	21	21	$2516.00	$1604.60
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	13	12	$170.00	$81.96
99221 Initial hospital inpatient care per day, typically 30 minutes	12	12	$179.00	$107.13

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	283	205	$85.51	$26.35
20610 Aspiration and/or injection of fluid from large joint	232	175	$183.39	$51.91
99213 Established patient office or other outpatient visit, typically 15 minutes	193	161	$129.36	$52.99
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	126	126	$220.54	$80.49
73564 X-ray of knee, 4 or more views	122	104	$23.07	$11.85
73030 X-ray of shoulder, minimum of 2 views	100	87	$19.64	$9.79
73502 X-ray of hip, 2-3 views	48	43	$19.40	$11.55
20610 Aspiration and/or injection of fluid from large joint	39	35	$305.08	$79.62
77073 Imaging for bone length assessment	39	31	$28.33	$14.99
73564 X-ray of knee, 4 or more views	35	32	$34.94	$18.72
27447 Replacement of knee joint, both sides of knee	34	33	$3704.65	$1477.92
20985 Computer-assisted surgery for muscle and bone procedure	34	33	$286.03	$162.66
23472 Prosthetic repair of shoulder joint, total shoulder	30	29	$3241.47	$1532.59
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	25	23	$117.00	$54.76
27130 Replacement of thigh bone and hip joint with prosthesis	19	19	$3083.05	$1420.22
73020 X-ray of shoulder, 1 view	15	11	$18.20	$8.36

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	114	96	$99.56	$26.09
20610 Aspiration and/or injection of fluid from large joint	108	89	$194.50	$51.11
99213 Established patient office or other outpatient visit, typically 15 minutes	107	98	$156.81	$52.00
20610 Aspiration and/or injection of fluid from large joint	104	88	$198.55	$51.37
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	98	82	$96.14	$27.19
99213 Established patient office or other outpatient visit, typically 15 minutes	96	81	$158.91	$50.60
73564 X-ray of knee, 4 or more views	73	56	$27.00	$11.50
73564 X-ray of knee, 4 or more views	70	55	$27.00	$11.45
73030 X-ray of shoulder, minimum of 2 views	62	53	$23.00	$9.57
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	56	56	$245.71	$79.19
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	55	55	$235.00	$77.64
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and	46	44	$117.00	$54.36
73030 X-ray of shoulder, minimum of 2 views	41	35	$23.00	$9.72
27447 Replacement of knee joint, both sides of knee	36	33	$3799.33	$1509.19
20985 Computer-assisted surgery for muscle and bone procedure	36	33	$305.00	$159.09
23472 Prosthetic repair of shoulder joint, total shoulder	35	35	$3924.00	$1554.60
27130 Replacement of thigh bone and hip joint with prosthesis	31	30	$3465.71	$1449.90
73502 X-ray of hip, 2-3 views	27	25	$20.00	$10.80
77073 Imaging for bone length assessment	20	18	$29.00	$14.82
73503 X-ray of hip with pelvis, minimum of 4 views	13	12	$25.00	$14.85
99221 Initial hospital inpatient care per day, typically 30 minutes	12	11	$219.25	$104.56
73502 X-ray of hip, 2-3 views	12	12	$20.00	$11.51
29881 Removal of knee cartilage using an endoscope	11	11	$1492.00	$572.42

Medical Specialties & State Licenses

Orthopaedic Surgery Primary Specialty

NUCC Taxonomy Code: 207X00000X

State License MI 4301074263

An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.

Hospital & Practice Group Affiliations

Iha Health Services Corporation

14650 E Old Us Hwy 12, Chelsea, MI 481181808

Phone: 7345935700

Practice Associates & Co-Workers

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

9 Associated Practitioners

Dr. Mark Pinto , MD

Orthopaedic Surgery

NPI 1033228903

Doctor of Medicine (M.D.)

Dr. Cameron Patthanacharoenphon , MD

Orthopaedic Surgery - Foot and Ankle Surgery

NPI 1073834339

Doctor of Medicine (M.D.)

Sienna Kotch , PA-C

Physician Assistant

NPI 1275201345

Physician Assistant (Certified)

Rebecca Turner , PA

Physician Assistant

NPI 1326127945

Physician Assistant

Dr. Andrew Moore , MD

Orthopaedic Surgery

NPI 1437374931

Doctor of Medicine (M.D.)

Dr. Lawrence Jajou , DO

Orthopaedic Surgery - Adult Reconstructive Orthopaedic Surgery

NPI 1497370050

Doctor of Osteopathic Medicine (D.O.)

Career & Practice History Timeline

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

8 Historical Events

📍

Updated Practice Location June 19, 2018

Registered at 14650 E. OLD US HWY 12, SUITE 105, CHELSEA, MI 48118 (Tel: 7345935700)

📍

Updated Business Mailing Address June 19, 2018

Registered at 24 FRANK LLOYD WRIGHT DR., LOBBY J2000, ANN ARBOR, MI 48106 (Tel: 7344754028)

✅

NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍

Updated Practice Location July 08, 2007

Registered at 775 S MAIN ST, CHELSEA, MI 481181383 (Tel: 7344754028)

📍

Updated Business Mailing Address July 08, 2007

Registered at 775 S MAIN ST, CHELSEA, MI 481181383 (Tel: 7344754028)

👤

Provider Name / Credentials Updated July 08, 2007

Recorded as ROBERT WILLIAMS, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Orthopaedic Surgery (License #4301074263 in MI)

🟢

Initial NPI Registration & Enumeration July 24, 2006

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: 1407878093

Entity Type:

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

Enumeration Date: July 24, 2006

Last Update: June 19, 2018

Sole Proprietor: No

Update or Correct Profile

Mailing Address

24 Frank Lloyd Wright Dr., Lobby J2000

Ann Arbor, MI 48106

Phone: 7344754028

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.