Active NPI 1982720231 Individual Practitioner Male Practitioner

Dr. John Adam Hamilton , MD

Orthopaedic Surgery • Marshalltown, IA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. John Hamilton, MD is a certified Orthopaedic Surgery practicing in Marshalltown, IA. With approximately 20 years of clinical experience since graduating from Creighton University School Of Medicine in 2006, Dr. Hamilton delivers high-quality medical care to the local community at 421 E MERLE HIBBS BLVD.

Dr. Hamilton maintains professional affiliations with Franklin General Hospital, Mcfarland Clinic Pc and accepts Medicare assignment.

Frequently performed procedures and clinical services include injection, triamcinolone acetonide, not otherwise specified, 10 mg, established patient outpatient office visit, aspiration and/or injection of fluid from large joint. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

421 E Merle Hibbs Blvd

Marshalltown, IA 501581992

Telephone 6418442213

Fax 6417525132

Associated Practice Facility / Clinic

🏢 Nudak Ventures Llc Facility NPI 1356616403

Medicare Profile & Education

Medical School

Creighton University School Of Medicine

Graduation Year

2006

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Orthopaedic Surgery in Marshalltown, IA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

20 Yrs +4.5 yrs vs City Avg

City Avg: 15.5 Yrs

State Avg: 24.7 Yrs

Regional Practice Density

5 Specialists

Practicing in Marshalltown, IA (271 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

66.7% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Hamilton (20 Years) 20 Yrs

Marshalltown Specialty Average (15.5 Years) 15.5 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
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	1,280	118	$3.00	$0.98
99213 Established patient office or other outpatient visit, typically 15 minutes	217	161	$136.85	$83.18
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	147	97	$82.88	$51.90
20610 Aspiration and/or injection of fluid from large joint	135	99	$220.92	$63.19
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	135	135	$182.15	$100.19
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	63	58	$202.62	$118.49
Q4010 Cast supplies, short arm cast, adult (11 years +), fiberglass	27	13	$24.00	$23.37
20600 Aspiration and/or injection of fluid from small joint	27	25	$208.30	$49.81
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	25	25	$281.24	$154.13
27447 Replacement of knee joint, both sides of knee	19	19	$3920.00	$1137.31
29823 Removal of extensive shoulder joint tissue using an endoscope	18	18	$890.50	$135.73
29827 Repair of shoulder rotator cuff using an endoscope	18	17	$2822.67	$956.53
29075 Application of elbow to finger cast	18	11	$231.61	$77.73
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	17	17	$233.29	$119.89
29828 Release of shoulder biceps tendon using an endoscope	15	14	$1213.50	$455.67
64721 Release and/or relocation of hand nerve	12	12	$1069.75	$380.66

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	1,387	120	$3.00	$1.07
99213 Established patient office or other outpatient visit, typically 15 minutes	190	158	$133.00	$84.38
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	176	126	$81.00	$53.10
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	174	174	$186.00	$104.21
20610 Aspiration and/or injection of fluid from large joint	144	113	$220.26	$65.58
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	50	46	$197.00	$120.43
Q4010 Cast supplies, short arm cast, adult (11 years +), fiberglass	27	17	$22.96	$22.19
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	21	21	$287.00	$151.39
27447 Replacement of knee joint, both sides of knee	17	16	$3920.00	$1182.70
29075 Application of elbow to finger cast	16	12	$225.00	$81.56
20600 Aspiration and/or injection of fluid from small joint	14	12	$197.00	$46.04
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	14	14	$238.00	$123.45
27236 Treatment of upper end of broken thigh bone with placement of stabilizing device or prosthetic replacement	14	14	$3362.00	$1101.70

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	1,842	145	$3.00	$1.15
99213 Established patient office or other outpatient visit, typically 15 minutes	251	176	$129.00	$84.68
20610 Aspiration and/or injection of fluid from large joint	201	137	$193.14	$65.82
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	197	197	$190.00	$104.69
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	133	111	$78.00	$52.78
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	43	42	$191.00	$119.17
Q4010 Cast supplies, short arm cast, adult (11 years +), fiberglass	35	24	$21.49	$20.93
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	33	33	$293.00	$157.54
29075 Application of elbow to finger cast	22	17	$218.00	$77.70
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	19	19	$243.00	$126.78
27447 Replacement of knee joint, both sides of knee	16	15	$3920.00	$1182.05
29827 Repair of shoulder rotator cuff using an endoscope	15	15	$2784.00	$988.88
29826 Shaving of part of shoulder bone and repair of ligament using an endoscope	12	12	$1858.00	$158.70
27245 Treatment of broken neck of thigh bone with bone implant	12	12	$3597.00	$1133.23
25600 Closed treatment of broken forearm bones	11	11	$816.00	$317.51
20550 Injection into tendon or ligament	11	11	$152.00	$53.75

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	996	85	$3.00	$1.22
99213 Established patient office or other outpatient visit, typically 15 minutes	151	113	$126.00	$86.08
20610 Aspiration and/or injection of fluid from large joint	114	89	$196.46	$65.34
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	82	82	$186.00	$105.77
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	29	29	$287.00	$159.02
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	29	27	$76.00	$53.44
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	28	27	$187.00	$123.80
20600 Aspiration and/or injection of fluid from small joint	13	11	$142.15	$34.05

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	454	40	$11.00	$1.50
99213 Established patient office or other outpatient visit, typically 15 minutes	79	60	$301.00	$71.11
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	56	37	$182.00	$43.41
20610 Aspiration and/or injection of fluid from large joint	54	41	$465.78	$62.39
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	51	51	$441.00	$103.13
73030 X-ray of shoulder, minimum of 2 views	45	26	$246.18	$25.48
73564 X-ray of knee, 4 or more views	42	35	$295.00	$41.97
73110 X-ray of wrist, minimum of 3 views	31	12	$256.00	$37.00
73502 X-ray of hip, 2-3 views	26	19	$293.00	$41.62
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	17	17	$445.00	$104.87
73562 X-ray of knee, 3 views	15	13	$251.00	$37.35
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	14	14	$675.00	$156.96

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	542	47	$11.00	$1.57
99213 Established patient office or other outpatient visit, typically 15 minutes	124	90	$285.00	$71.39
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	70	70	$420.00	$104.20
73030 X-ray of shoulder, minimum of 2 views	62	41	$280.90	$27.53
20610 Aspiration and/or injection of fluid from large joint	61	47	$476.75	$61.73
73564 X-ray of knee, 4 or more views	52	40	$295.00	$40.01
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	50	38	$175.00	$42.75
73502 X-ray of hip, 2-3 views	41	31	$284.32	$40.10
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	28	28	$420.00	$103.56
73562 X-ray of knee, 3 views	19	14	$232.47	$33.20
73610 X-ray of ankle, minimum of 3 views	17	11	$237.00	$32.19
99202 New patient office or other outpatient visit, typically 20 minutes	17	17	$300.00	$73.77
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	13	13	$640.00	$158.64
72170 X-ray of pelvis, 1-2 views	11	11	$281.00	$31.86

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	63	48	$173.54	$71.26
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	60	60	$253.00	$103.02
20610 Aspiration and/or injection of fluid from large joint	46	36	$203.30	$64.53
J1040 Injection, methylprednisolone acetate, 80 mg	41	26	$60.00	$12.83
73030 X-ray of shoulder, minimum of 2 views	22	18	$80.73	$29.09
73564 X-ray of knee, 4 or more views	21	17	$238.71	$44.07
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	20	15	$107.30	$42.89
73562 X-ray of knee, 3 views	18	16	$131.00	$36.99
73560 X-ray of knee, 1-2 views	16	14	$70.31	$29.57
99202 New patient office or other outpatient visit, typically 20 minutes	12	12	$273.00	$67.23
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	11	11	$257.27	$105.26

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	84	75	$56.88	$49.00
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	70	58	$28.47	$24.64
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	52	52	$88.63	$73.62
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	41	39	$95.49	$76.54
20610 Aspiration and/or injection of fluid from large joint	38	30	$64.82	$49.13
27447 Replacement of knee joint, both sides of knee	17	17	$3898.00	$1295.10
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	13	13	$143.77	$125.35
99202 New patient office or other outpatient visit, typically 20 minutes	13	13	$57.08	$48.88
27130 Replacement of thigh bone and hip joint with prosthesis	12	12	$4007.00	$1295.48

Medical Specialties & State Licenses

CMS Verified: 2023-07-12

Orthopaedic Surgery Primary Specialty

NUCC Taxonomy Code: 207X00000X

State License IA 48358

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.

Orthopaedic Surgery

NUCC Taxonomy Code: 207X00000X

State License MN 53573

Orthopaedic Surgery

NUCC Taxonomy Code: 207X00000X

State License OH 57-012100

Orthopaedic Surgery

NUCC Taxonomy Code: 207X00000X

State License WI 69507

Hospital & Practice Group Affiliations

Mcfarland Clinic Pc

421 E Merle Hibbs Blvd, Marshalltown, IA 501581992

Phone: 6417520654

Franklin General Hospital

1720 Central E Ave, Hampton, IA 504411869

Mcfarland Clinic Pc

1215 Duff Ave, Ames, IA 500105400

Phone: 5152394400

Franklin General Hospital

1720 Central Ave E, Hampton, IA 504411869

Franklin General Hospital

1720 Central Ave E, Hampton, IA 504411869

Phone: 6414565050

Mcfarland Clinic Pc

1111 Duff Ave, Ames, IA 500105745

Phone: 5152394472

Secondary Practice Locations

1233 34th St Nw

Bemidji, MN 56601

Phone: 2183335000

1233 34th St Nw

Bemidji, MN 56601

Phone: 2183335000

501 N 10th St

Manitowoc, WI 54220

Phone: 9206826376

Practice Associates & Co-Workers

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

3 Associated Practitioners

Michael Knutsen , MPAS, PA-C

Physician Assistant

NPI 1063774321

MPAS, Physician Assistant (Certified)

Dr. Alison Wilson , MD

Surgery

NPI 1114149622

Doctor of Medicine (M.D.)

Dr. Stephen Vanburen , MD

Surgery

NPI 1316929862

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

15 Historical Events

📍

Updated Practice Location July 17, 2023

Registered at 421 E MERLE HIBBS BLVD, MARSHALLTOWN, IA 501581992 (Tel: 6418442213)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 17, 2023

Orthopaedic Surgery (License #53573 in MN)

📍

Updated Practice Location June 01, 2021

Registered at 312 E MAIN ST STE 1000, MARSHALLTOWN, IA 501581992 (Tel: 6418442213)

📍

Updated Business Mailing Address June 01, 2021

Registered at 1215 DUFF AVE, AMES, IA 500105469 (Tel: 5152394400)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) June 01, 2021

Orthopaedic Surgery (License #69507 in WI)

📍

Updated Practice Location October 03, 2018

Registered at 501 N 10TH ST, MANITOWOC, WI 54220 (Tel: 9206826376)

📍

Updated Business Mailing Address October 03, 2018

Registered at 164 N BROADWAY, GREEN BAY, WI 543032728 (Tel: 9204909046)

📍

Updated Practice Location July 05, 2018

Registered at 1233 34TH ST NW, BEMIDJI, MN 56601 (Tel: 2183335000)

📍

Updated Business Mailing Address July 05, 2018

Registered at 118 PAUL BUNYAN DR S, BEMIDJI, MN 566013236 (Tel: 2184448881)

✅

NPI Profile Active October 02, 2012

NPI status registered as active in NPPES database

📍

Updated Practice Location October 02, 2012

Registered at 1233 34TH ST NW, BEMIDJI, MN 566015112 (Tel: 2183335000)

📍

Updated Business Mailing Address October 02, 2012

Registered at 1233 34TH ST NW, BEMIDJI, MN 566015112 (Tel: 2183335000)

👤

Provider Name / Credentials Updated October 02, 2012

Recorded as JOHN HAMILTON, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) October 02, 2012

Orthopaedic Surgery (License #53573 in MN)

🟢

Initial NPI Registration & Enumeration March 21, 2007

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

0 Reviews

No patient reviews submitted yet for Dr. John Hamilton. Be the first to share your experience!

Only verified registered users can submit ratings, post feedback, and upload facility photos.

NPI Administrative Meta

NPI Number: 1982720231

Entity Type:

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

Enumeration Date: March 21, 2007

Last Update: July 17, 2023

Sole Proprietor: No

Update or Correct Profile

Mailing Address

1215 Duff Ave

Ames, IA 500105469

Phone: 5152394400

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.