Dr. Christopher James Rierson , DO
Orthopaedic Surgery • Spencer, IA
1200 1st Ave E, Ste C
Spencer, IA 513014342
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. Christopher Rierson is listed in NPPES under Orthopaedic Surgery.
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NPI assigned on May 1, 2008; this date does not establish years in practice.
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Published CMS data list 3,423 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 20610 — Aspiration and/or injection of fluid from large joint: 697 service units.
- J3301 — Injection, triamcinolone acetonide, not otherwise specified, 10 mg: 696 service units.
- 99213 — Established patient outpatient office visit: 372 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 32 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 605 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Cephalexin — 132 prescription fills, including refills.
- Chlorhexidine Gluconate — 94 prescription fills, including refills.
- Mupirocin — 90 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 12 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 65% of clinicians listed under Orthopaedic Surgery in Iowa (2024, 129 clinicians with data). Median for this group: 1,749. Middle half: 618 to 3,771.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 2,192 in 2020 to 3,423 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
1200 1st Ave E
Ste C
Spencer, IA 513014342
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 3 distinct group names: Avera Mckennan; Lakes Regional Healthcare; Spencer Municipal Hospital. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
University Of Iowa, Rj & L Carver College Of Medicine
1999
What Public CMS Data Show
Orthopaedic Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
914 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $222,586 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $164,594 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
30-day fills
605 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$2,941 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $15.19 in 2021
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2021.
Years since graduation
27 years (graduated 1999)
CMS Doctors and Clinicians data list 1999 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2008
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Rierson has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Rierson as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Spencer and Iowa
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 65% of clinicians listed under Orthopaedic Surgery in Iowa (2024, 129 clinicians with data). Median for this group: 1,749. Middle half: 618 to 3,771.
Too few clinicians listed under Orthopaedic Surgery in Spencer have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A higher Medicare-allowed amount than 80% of clinicians listed under Orthopaedic Surgery in Iowa (2024, 129 clinicians with data). Median for this group: $105,421. Middle half: $45,407 to $179,109.
Too few clinicians listed under Orthopaedic Surgery in Spencer have Medicare Part B data for 2024 to compare.
Paid by Medicare
A higher Medicare payment amount than 80% of clinicians listed under Orthopaedic Surgery in Iowa (2024, 129 clinicians with data). Median for this group: $81,530. Middle half: $34,160 to $138,007.
Too few clinicians listed under Orthopaedic Surgery in Spencer have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
More Part D prescriptions than 80% of clinicians listed under Orthopaedic Surgery in Iowa (2024, 149 clinicians with data). Median for this group: 153. Middle half: 45 to 456.
Too few clinicians listed under Orthopaedic Surgery in Spencer have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 80% of clinicians listed under Orthopaedic Surgery in Iowa (2024, 149 clinicians with data). Median for this group: $846. Middle half: $177 to $2,399.
Too few clinicians listed under Orthopaedic Surgery in Spencer have Medicare Part D data for 2024 to compare.
5 active clinicians are listed under Orthopaedic Surgery with a practice address in Spencer, IA (258 in Iowa).
Addresses are self-reported to NPPES and may be out of date.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services increased 56% from 2,192 in 2020 to 3,423 in 2024.
- 2020: 2,192
- 2021: 4,037
- 2022: 2,668
- 2023: 3,422
- 2024: 3,423
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Medicare-allowed amount
Medicare-allowed amount increased 22% from $182,384 in 2020 to $222,586 in 2024.
- 2020: $182,384
- 2021: $249,311
- 2022: $239,897
- 2023: $222,657
- 2024: $222,586
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Paid by Medicare
Paid by Medicare increased 17% from $140,478 in 2020 to $164,594 in 2024.
- 2020: $140,478
- 2021: $192,624
- 2022: $180,617
- 2023: $165,384
- 2024: $164,594
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 10% from 548 in 2020 to 605 in 2024.
- 2020: 548
- 2021: 632
- 2022: 590
- 2023: 522
- 2024: 605
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30-day fills
30-day fills increased 10% from 551 in 2020 to 605 in 2024.
- 2020: 551
- 2021: 632
- 2022: 590
- 2023: 522
- 2024: 605
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Part D drug cost
Part D drug cost decreased 13% from $3,365 in 2020 to $2,941 in 2024.
- 2020: $3,365
- 2021: $4,272
- 2022: $3,779
- 2023: $4,288
- 2024: $2,941
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Industry payments (Open Payments)
Industry payments (Open Payments) decreased 99% from $1,133.85 in 2019 to $15.19 in 2021.
- 2019: $1,133.85
- 2020: $165.52
- 2021: $15.19
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2021), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2021 (payments made January 1 – December 31, 2021): fewer than 11 records totaling $15.19.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Stryker Corporation |
Food and Beverage
In-kind items and services
|
T2 | General | $15.19 |
Source: CMS Open Payments, program year 2021, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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20610
Aspiration and/or injection of fluid from large joint
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697 | 378 | $75.27 | $44.19 |
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J3301
Injection, triamcinolone acetonide, not otherwise specified, 10 mg
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696 | 63 | $6.00 | $0.97 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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372 | 287 | $56.38 | $54.30 |
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99212
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
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276 | 195 | $34.00 | $32.47 |
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73030
X-ray of shoulder, minimum of 2 views
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141 | 115 | $35.03 | $9.09 |
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99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
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137 | 137 | $77.81 | $73.13 |
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20610
Aspiration and/or injection of fluid from large joint
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130 | 64 | $259.65 | $68.22 |
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73564
X-ray of knee, 4 or more views
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119 | 117 | $41.66 | $11.73 |
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73562
X-ray of knee, 3 views
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117 | 78 | $31.53 | $8.57 |
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73502
X-ray of hip, 2-3 views
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102 | 67 | $36.00 | $10.03 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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87 | 84 | $84.14 | $79.18 |
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20985
Computer-assisted surgery for muscle and bone procedure
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80 | 79 | $473.00 | $127.60 |
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27447
Replacement of knee joint, both sides of knee
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47 | 46 | $4500.00 | $1145.41 |
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73110
X-ray of wrist, minimum of 3 views
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43 | 26 | $29.95 | $8.35 |
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99212
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
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31 | 22 | $114.00 | $53.44 |
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20605
Aspiration and/or injection of fluid from medium joint
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30 | 23 | $62.20 | $33.52 |
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99232
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
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30 | 27 | $171.00 | $72.61 |
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99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
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29 | 29 | $230.00 | $101.46 |
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73610
X-ray of ankle, minimum of 3 views
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28 | 15 | $28.00 | $7.79 |
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27130
Replacement of thigh bone and hip joint with prosthesis
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24 | 24 | $4300.00 | $1109.19 |
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73501
X-ray of hip, 1 view
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24 | 22 | $31.00 | $8.45 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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24 | 21 | $172.33 | $82.76 |
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11750
Permanent removal fingernail or toenail
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23 | 16 | $193.00 | $77.47 |
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73630
X-ray of foot, minimum of 3 views
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19 | 18 | $28.42 | $7.90 |
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20600
Aspiration and/or injection of fluid from small joint
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18 | 18 | $52.78 | $31.61 |
(top 25 shown)
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Cephalexin | Cephalexin | 132 | 177 | $162.70 | 75 |
| Chlorhexidine Gluconate | Chlorhexidine Gluconate | 94 | 977 | $354.08 | 93 |
| Mupirocin | Mupirocin | 90 | 1,229 | $610.15 | 88 |
| Diclofenac Sodium | Diclofenac Sodium | 89 | 2,655 | $689.96 | 46 |
| Methylprednisolone | Methylprednisolone | 55 | 326 | $335.34 | 48 |
| Oxycodone Hcl | Oxycodone Hcl | 32 | 271 | $205.33 | 27 |
| Tramadol Hcl | Tramadol Hcl | 24 | 197 | $91.95 | 18 |
| Ondansetron Odt | Ondansetron | 24 | 167 | $197.18 | 24 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 21 | 158 | $150.28 | 20 |
| Meloxicam | Meloxicam | 16 | 480 | $76.36 | — |
| Ibuprofen | Ibuprofen | 14 | 299 | $54.59 | 13 |
| Clindamycin Hcl | Clindamycin Hcl | 14 | 14 | $13.45 | — |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 207X00000X
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.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - ORTHOPEDIC SURGERY
I20161221000032
MN
0244473585
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Spencer Municipal Hospital
1200 1st Ave E C, Spencer, IA 513014342
Phone: 7122627511
Lakes Regional Healthcare
2408 Zenith Ave E, Spirit Lake, IA 513601068
Phone: 7123361230
Spencer Municipal Hospital
1200 1st Ave E, Spencer, IA 513014342
Spencer Municipal Hospital
1200 1st Ave E, Spencer, IA 513014330
Avera Mckennan
1216 Ryans Rd, Worthington, MN 561871722
Phone: 5073722921
Avera Mckennan
941 County Rd, Heron Lake, MN 561371408
Phone: 5077932349
Avera Mckennan
1216 Ryans Rd, Worthington, MN 561871722
Phone: 5073722921
Lakes Regional Healthcare
2301 Hwy 71, Spirit Lake, IA 513601184
Spencer Municipal Hospital
1200 1st Ave E, Spencer, IA 513014342
Phone: 7122646198
Lakes Regional Healthcare
1216 Ryans Rd, Worthington, MN 561871781
Phone: 7123368708
Lakes Regional Healthcare
600 9th Ave N, Sibley, IA 512491012
Phone: 7123368708
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Podiatrist - Foot & Ankle Surgery
Doctor of Podiatric Medicine
Radiology - Diagnostic Radiology
Doctor of Medicine (M.D.)
Orthopaedic Surgery - Hand Surgery
Doctor of Medicine (M.D.)
Orthopaedic Surgery
Doctor of Osteopathic Medicine (D.O.)
Orthopaedic Surgery
Doctor of Osteopathic Medicine (D.O.)
Physician Assistant
Physician Assistant (Certified)
Career & Practice History
NPI enumerated May 01, 2008.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Orthopaedic Surgery Specialists in Spencer
Healthcare providers in SpencerMailing Address
1200 1st Ave E, Ste C
Spencer, IA 513014342
Phone: 7122627511