Active NPI 1588617211 Individual Practitioner Male Practitioner

Dr. David Charles Ritzow , MD

Orthopaedic Surgery • Appleton, WI

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. David Ritzow, MD is a certified Orthopaedic Surgery practicing in Appleton, WI. With approximately 34 years of clinical experience since graduating from University Of Wisconsin School Of Medicine in 1992, Dr. Ritzow delivers high-quality medical care to the local community at 2105 E ENTERPRISE AVE.

Dr. Ritzow is affiliated with Orthopedic And Sports Institute Of The Fox Valley S C 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

2105 E Enterprise Ave
Ste 111

Appleton, WI 54913

Telephone 9207316611

Fax 9207316732

Associated Practice Facility / Clinic

🏢 Valley Orthopedic Clinic Sc Facility NPI 1780628925

Medicare Profile & Education

Medical School

University Of Wisconsin School Of Medicine

Graduation Year

1992

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Orthopaedic Surgery in Appleton, WI

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

34 Yrs +9.0 yrs vs City Avg

City Avg: 25.0 Yrs

State Avg: 23.8 Yrs

Regional Practice Density

32 Specialists

Practicing in Appleton, WI (688 Statewide)

Telehealth Adoption Rate

3.1% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

89.3% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Ritzow (34 Years) 34 Yrs

Appleton Specialty Average (25.0 Years) 25.0 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
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	336	37	$5.67	$0.98
99213 Established patient office or other outpatient visit, typically 15 minutes	65	54	$194.40	$84.81
20610 Aspiration and/or injection of fluid from large joint	49	39	$433.29	$60.70
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	35	35	$302.20	$103.93
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	35	32	$280.40	$117.94
73502 X-ray of hip, 2-3 views	29	22	$262.28	$42.28
73564 X-ray of knee, 4 or more views	28	25	$307.00	$43.07
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	17	15	$153.76	$53.00
73030 X-ray of shoulder, minimum of 2 views	14	12	$310.00	$32.68
73721 Mri scan of leg joint without contrast	11	11	$4042.91	$135.43

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	299	35	$3.27	$1.07
99213 Established patient office or other outpatient visit, typically 15 minutes	64	48	$186.22	$83.81
20610 Aspiration and/or injection of fluid from large joint	47	34	$431.49	$62.59
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	46	37	$269.91	$113.00
73564 X-ray of knee, 4 or more views	43	37	$295.00	$44.44
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	25	25	$289.00	$104.89
73030 X-ray of shoulder, minimum of 2 views	22	13	$277.18	$27.66
73502 X-ray of hip, 2-3 views	16	13	$263.00	$44.74
99202 New patient office or other outpatient visit, typically 20 minutes	11	11	$222.00	$65.65

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg	270	28	$2.50	$1.13
99213 Established patient office or other outpatient visit, typically 15 minutes	63	46	$186.00	$85.67
20610 Aspiration and/or injection of fluid from large joint	40	30	$448.50	$65.40
73564 X-ray of knee, 4 or more views	33	25	$295.00	$43.21
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	30	29	$269.00	$119.73
73502 X-ray of hip, 2-3 views	16	12	$251.88	$43.09
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	15	15	$289.00	$105.52

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	74	59	$186.00	$87.48
20610 Aspiration and/or injection of fluid from large joint	63	48	$433.33	$63.82
73564 X-ray of knee, 4 or more views	55	42	$295.00	$44.04
J1040 Injection, methylprednisolone acetate, 80 mg	48	38	$21.00	$10.65
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	45	36	$269.00	$124.32
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	31	26	$146.00	$53.87
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	28	28	$289.00	$107.01
73030 X-ray of shoulder, minimum of 2 views	21	16	$272.29	$30.09
99202 New patient office or other outpatient visit, typically 20 minutes	21	21	$222.00	$69.54
73502 X-ray of hip, 2-3 views	20	18	$254.10	$43.00
73721 Mri scan of leg joint without contrast	11	11	$3894.00	$151.73

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	73	54	$186.00	$72.21
20610 Aspiration and/or injection of fluid from large joint	49	41	$421.84	$61.13
J1040 Injection, methylprednisolone acetate, 80 mg	36	31	$21.00	$11.54
73564 X-ray of knee, 4 or more views	29	26	$295.00	$42.07
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	26	26	$289.00	$102.45
73502 X-ray of hip, 2-3 views	22	20	$263.00	$43.43
73030 X-ray of shoulder, minimum of 2 views	17	14	$295.00	$31.64
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	16	16	$269.00	$104.75
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	14	13	$146.00	$42.11
73721 Mri scan of leg joint without contrast	14	13	$3894.00	$154.38

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	87	71	$186.00	$70.27
20610 Aspiration and/or injection of fluid from large joint	56	50	$438.75	$59.79
73564 X-ray of knee, 4 or more views	43	34	$295.00	$39.69
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	40	40	$289.00	$102.97
J1040 Injection, methylprednisolone acetate, 80 mg	36	32	$21.00	$12.13
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	27	23	$146.00	$43.04
73502 X-ray of hip, 2-3 views	26	20	$235.62	$34.12
73030 X-ray of shoulder, minimum of 2 views	15	14	$281.93	$28.78
73721 Mri scan of leg joint without contrast	13	13	$3894.00	$157.12

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	68	57	$181.00	$64.42
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	59	45	$142.00	$39.32
20610 Aspiration and/or injection of fluid from large joint	46	42	$449.35	$57.06
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	44	44	$281.00	$96.18
J1040 Injection, methylprednisolone acetate, 80 mg	32	27	$21.00	$12.50
73564 X-ray of knee, 4 or more views	28	23	$295.00	$35.51
73502 X-ray of hip, 2-3 views	21	18	$254.52	$33.36
73562 X-ray of knee, 3 views	20	17	$250.00	$32.04
73030 X-ray of shoulder, minimum of 2 views	14	14	$295.00	$26.48
99202 New patient office or other outpatient visit, typically 20 minutes	13	13	$216.00	$64.63
29881 Removal of knee cartilage using an endoscope	13	13	$4677.00	$477.04
73721 Mri scan of leg joint without contrast	12	12	$3894.00	$152.28

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
20610 Aspiration and/or injection of fluid from large joint	72	58	$421.88	$58.26
99213 Established patient office or other outpatient visit, typically 15 minutes	68	53	$174.00	$67.18
J1040 Injection, methylprednisolone acetate, 80 mg	60	49	$20.00	$11.12
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	51	51	$270.00	$98.52
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	48	39	$137.00	$40.37
73564 X-ray of knee, 4 or more views	42	34	$284.00	$36.70
73502 X-ray of hip, 2-3 views	30	21	$235.90	$35.56
73562 X-ray of knee, 3 views	27	17	$233.85	$32.17
73030 X-ray of shoulder, minimum of 2 views	13	12	$284.00	$26.81
27130 Replacement of thigh bone and hip joint with prosthesis	12	12	$14865.00	$1243.12

Medical Specialties & State Licenses

Orthopaedic Surgery Primary Specialty

NUCC Taxonomy Code: 207X00000X

State License WI 39990

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.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

32438900 (WI)

Hospital & Practice Group Affiliations

Orthopedic And Sports Institute Of The Fox Valley S C

212 E Green Bay St, Shawano, WI 541662472

Phone: 9205601000

Practice Associates & Co-Workers

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

16 Associated Practitioners

Ashley Rockey , ATC

Specialist/Technologist, Other

NPI 1073528493

Certified Athletic Trainer

Lyndsey Maves , PA-C

Physician Assistant

NPI 1073597761

Physician Assistant (Certified)

Kristine Clark , OTC

Specialist/Technologist, Other

NPI 1073795506

Sheryl Gauthier , PA-C

Physician Assistant

NPI 1114231974

Physician Assistant (Certified)

Kim Willison , APNP

Nurse Practitioner - Adult Health

NPI 1225080955

Advanced Practice Nurse Prescriber

Bradley Borgen , APNP

Nurse Practitioner

NPI 1255383006

Advanced Practice Nurse Prescriber

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍

Updated Practice Location July 08, 2007

Registered at 2105 E ENTERPRISE AVE, STE 111, APPLETON, WI 54913 (Tel: 9207316611)

📍

Updated Business Mailing Address July 08, 2007

Registered at 2105 E ENTERPRISE AVE, STE 111, APPLETON, WI 54913 (Tel: 9207316611)

👤

Provider Name / Credentials Updated July 08, 2007

Recorded as DAVID RITZOW, M.D.

🎓

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

Orthopaedic Surgery (License #39990 in WI)

🟢

Initial NPI Registration & Enumeration May 17, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

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NPI Administrative Meta

NPI Number: 1588617211

Entity Type:

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

Enumeration Date: May 17, 2006

Last Update: July 13, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

2105 E Enterprise Ave, Ste 111

Appleton, WI 54913

Phone: 9207316611

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.