CHRISTOPHER JAMES RIERSON DO
NPI 1912173741
Orthopaedic Surgery in Spencer, IA

Q: What is Christopher Rierson's NPI number?

The NPI number for Christopher Rierson is 1912173741. It was assigned to this individual provider in the NPPES registry on May 1, 2008.

Q: What is Christopher Rierson's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Active since May 01, 2008PECOS EnrolledAccepts Medicare Assignment

1200 1ST AVE E, STE C, SPENCER, IA 51301(712) 262-7511(712) 262-3658 Get Directions Write a Review

NPPES record last updated: October 1, 2013. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Christopher James Rierson Do NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

CHRISTOPHER JAMES RIERSON DO (NPI 1912173741) is an individual orthopaedic surgery provider in Spencer, Iowa, licensed in Iowa (4395) and active in the NPI registry since May 2008. He is enrolled in Medicare PECOS, is affiliated with Spencer Municipal Hospital, and is a graduate of University Of Iowa, Rj & L Carver College Of Medicine (1999).

NPPES Registry Identity

NPI1912173741

Entity TypeIndividualMale

Primary Taxonomy207X00000X

Provider Legal NameCHRISTOPHER JAMES RIERSONCredential: DO

Location Address1200 1ST AVE E, STE CSpencer, IA 51301-4342

Mailing Address1200 1st Ave E, Ste CSpencer, IA 51301-4342 · (712) 262-7511 · Fax (712) 262-3658

Phone(712) 262-7511

Fax(712) 262-3658

Sole ProprietorNo

Medical School CMSUniversity Of Iowa, Rj & L Carver College Of MedicineGraduated 1999

Enumeration DateMay 1, 2008

Last NPPES UpdateOctober 1, 2013

✔ NPI 1912173741 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code207X00000X

License✔ Licensed in IA · 4395

Definition

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.

1200 1ST AVE E, Spencer, IA 51301

Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Christopher James Rierson Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID244473585

PECOS Enrollment IDI20130905000406, I20161221000032

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Christopher Rierson reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Spencer Municipal Hospital

Same address

Rural

1200 1ST AVE E
Spencer, IA 51301

Reassigned Medicare billing, Iowa enrollment
176 clinicians in this Medicare group

NPI 1255328621 (712) 264-6111

Lakes Regional Healthcare

19 mi

Clinic/Center

2408 ZENITH AVENUE, SUITE E
Spirit Lake, IA 51360

Reassigned Medicare billing, Iowa and Minnesota enrollments
65 clinicians in this Medicare group

NPI 1558904417 (712) 336-8796

Avera Mckennan

40 mi

Optometrist

702 10TH ST
Worthington, MN 56187

Reassigned Medicare billing, Minnesota enrollment
75 clinicians in this Medicare group

NPI 1174077275 (507) 376-5535

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 32

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Aspiration and/or injection of fluid from large joint 20610

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

697 services378 patients

Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301

Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.

696 services63 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

372 services287 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

276 services195 patients

X-ray of shoulder, minimum of 2 views 73030

An X-ray of the shoulder, with a minimum of 2 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of your shoulder bones. This helps in diagnosing conditions like fractures, arthritis, or other abnormalities. The procedure is quick and painless.

141 services115 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

137 services137 patients

Aspiration and/or injection of fluid from large joint 20610

130 services64 patients

X-ray of knee, 4 or more views 73564

An X-ray of the knee, 4 or more views, is a non-invasive imaging test. It involves capturing multiple images of your knee from different angles. This helps in diagnosing conditions such as fractures, arthritis, or infections. The procedure is quick and painless.

119 services117 patients

X-ray of knee, 3 views 73562

An X-ray of the knee, 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the knee from three different angles. This helps medical professionals to diagnose and monitor conditions like arthritis, fractures, or infections. The process is quick and painless.

117 services78 patients

X-ray of hip, 2-3 views 73502

An X-ray of the hip with 2-3 views is a non-invasive imaging test. It uses a small amount of radiation to produce pictures of the hip joint. These images help in diagnosing conditions like fractures, arthritis, or other abnormalities. The process is quick and painless.

102 services67 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

87 services84 patients

Computer-assisted surgery for muscle and bone procedure 20985

Computer-assisted surgery for muscle and bone procedures involves using a computer to aid in planning and performing surgery. This technology helps increase precision, reduce invasiveness, and improve outcomes. It's commonly used in orthopedic surgeries like joint replacements.

80 services79 patients

Replacement of knee joint, both sides of knee 27447

A bilateral knee joint replacement is a procedure where the damaged parts of both your knee joints are replaced with artificial parts. It aims to relieve pain and improve mobility. The process involves a surgical operation under anesthesia.

47 services46 patients

X-ray of wrist, minimum of 3 views 73110

An X-ray of the wrist, minimum of 3 views, is a diagnostic procedure that uses radiation to create images of your wrist from different angles. This helps detect fractures, infections, or other abnormalities for accurate diagnosis and treatment planning.

43 services26 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

31 services22 patients

Aspiration and/or injection of fluid from medium joint 20605

This procedure involves a needle being inserted into a medium-sized joint, such as a knee or shoulder, to remove (aspirate) excess fluid. Sometimes, medication may also be injected into the joint to reduce inflammation and pain.

30 services23 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

30 services27 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

29 services29 patients

X-ray of ankle, minimum of 3 views 73610

An ankle X-ray is a quick, painless imaging test. It involves capturing at least three different images or 'views' of your ankle using small amounts of radiation. These images help identify any abnormalities or injuries, such as fractures or arthritis.

28 services15 patients

Replacement of thigh bone and hip joint with prosthesis 27130

This procedure, known as hip arthroplasty, involves replacing your damaged thigh bone and hip joint with artificial parts, called a prosthesis. It helps relieve pain, improve mobility, and enhance your quality of life.

24 services24 patients

X-ray of hip, 1 view 73501

An X-ray of the hip, 1 view, is a quick, painless test where a small amount of radiation is used to produce images of the hip joint. This helps in diagnosing conditions like arthritis or fractures. You'll be positioned so that the X-ray machine can capture the best image of your hip.

24 services22 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

24 services21 patients

Permanent removal fingernail or toenail 11750

Permanent removal of a fingernail or toenail, also known as avulsion, is a procedure performed to treat nail infections or severe ingrown nails. The nail is carefully removed under local anesthesia. After removal, a chemical is applied to prevent nail regrowth, ensuring the issue does not recur.

23 services16 patients

X-ray of foot, minimum of 3 views 73630

An X-ray of the foot, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones and tissues in your foot. This helps to identify fractures, infections, or other abnormalities. Multiple views ensure a comprehensive examination.

19 services18 patients

Aspiration and/or injection of fluid from small joint 20600

This procedure involves inserting a thin needle into a small joint to remove (aspirate) or inject fluid. It can help diagnose conditions, relieve discomfort, or administer medication directly into the joint. It's generally safe with minimal discomfort.

18 services18 patients

Injection into tendon or ligament 20550

An injection into a tendon or ligament involves placing medication directly into these areas to help reduce inflammation and pain. It's often used for conditions like arthritis or tendonitis. The procedure is quick and usually involves a local anesthetic.

17 services14 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

16 services16 patients

Prosthetic repair of shoulder joint, total shoulder 23472

Total shoulder prosthetic repair is a surgical procedure to replace a damaged shoulder joint with artificial components. It aims to relieve pain and restore mobility. The procedure involves replacing the ball (humeral head) and socket (glenoid) of the shoulder joint.

15 services15 patients

X-ray of lower and sacral spine, 2-3 views 72100

An X-ray of the lower and sacral spine involves capturing images of your lower back area, including the tailbone. This procedure helps in identifying problems like fractures, infections, or deformities. 2-3 different angle views provide a comprehensive picture.

15 services15 patients

X-ray of pelvis, 1-2 views 72170

An X-ray of the pelvis, 1-2 views, is a quick and painless imaging test. It uses a small amount of radiation to produce images of the lower part of your torso. These images help to detect any abnormalities or injuries in your hip bones and surrounding structures.

13 services11 patients

X-ray of hip, 2-3 views 73502

12 services12 patients

Removal of knee cartilage using an endoscope 29881

This procedure, known as arthroscopic knee surgery, involves using a small camera (endoscope) to view the inside of your knee. Small instruments are used to remove damaged cartilage. This can help alleviate pain and improve knee function.

11 services11 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Spencer Municipal Hospital

Acute Care Hospitals · Spencer, IA

5/5 CMS rating

OwnershipGovernment - Local

CMS Certification Number160112

Location1200 1st Avenue EastSpencer, IA 51301 · Clay County

Emergency services Birthing friendly

Lakes Regional Healthcare

Acute Care Hospitals · Spirit Lake, IA

3/5 CMS rating

OwnershipGovernment - Local

CMS Certification Number160124

Location2301 Highway 71Spirit Lake, IA 51360 · Dickinson County

Emergency services Birthing friendly

Osceola Community Hospital

Critical Access Hospitals · Sibley, IA

OwnershipVoluntary non-profit - Private

CMS Certification Number161345

Location600 9th Avenue NorthSibley, IA 51249 · Osceola County

Emergency services

Avera Holy Family Hospital

Critical Access Hospitals · Estherville, IA

OwnershipVoluntary non-profit - Private

CMS Certification Number161351

Location826 North 8th StreetEstherville, IA 51334 · Emmet County

Emergency services

Kossuth Regional Health Center

Critical Access Hospitals · Algona, IA

1/5 CMS rating

OwnershipGovernment - Local

CMS Certification Number161353

Location1515 South Phillips StreetAlgona, IA 50511 · Kossuth County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 51301 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$81.84 typical visit price

range $52.96 – $161.40

Typical copayment $20.46 (range $13.24 – $40.35)

Most-billed visit code 99203

Established Patient

$66.36 typical visit price

range $16.91 – $131.98

Typical copayment $16.59 (range $4.22 – $32.99)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Perioperative Care: Selection of Prophylactic Antibiotic - First OR Second Generation Cephalosporin

Percentage of surgical patients aged 18 years and older undergoing procedures with the indications for a first OR second generation cephalosporin prophylactic antibiotic, who had an order for a first OR second generation cephalosporin for antimicrobial…

100%86 patients

Perioperative Care: Venous Thromboembolism (VTE) Prophylaxis (When Indicated in ALL Patients)

Percentage of surgical patients aged 18 years and older undergoing procedures for which venous thromboembolism (VTE) prophylaxis is indicated in all patients, who had an order for Low Molecular Weight Heparin (LMWH), Low- Dose Unfractionated Heparin (LDUH)…

100%86 patients

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Neuromuscular stimulator, electronic shock unit E0745

DME-Other DME · category DE000N

2 suppliers18 claims18 services$54.17 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SARAH ELISE JOHNSON

Registered Nurse (Emergency)

1200 1ST AVE E
SPENCER, IA 51301

Clay County (712) 264-6101

NORTHWEST IOWA UROLOGISTS PC

Specialist

1200 1ST AVE E, SUITE B
SPENCER, IA 51301

Clay County (712) 262-6214

KELLIE PERRY

Physical Therapist

1200 1ST AVE E
SPENCER, IA 51301

Clay County (712) 264-6189

DR. JAMES ALAN DELPERDANG MD

Emergency Medicine

1200 1ST AVE E
SPENCER, IA 51301

Clay County (712) 264-6198

RUTH E VETTER OTR/L

Occupational Therapist

1200 1ST AVE E
SPENCER, IA 51301

Clay County (712) 264-6416

NWIA BONE JOINT AND SPORTS SURGEONS

Physical Therapist

1200 1ST AVE E, SUITE C
SPENCER, IA 51301

Clay County (712) 262-7511

KEVIN D CARLSON ATC/L

Specialist/Technologist (Athletic Trainer)

1200 1ST AVE E, SUITE C
SPENCER, IA 51301

Clay County (712) 262-7511

TESSA ROCKWELL DPT

Physical Therapist

1200 1ST AVE E
SPENCER, IA 51301

Clay County (712) 264-6189

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Christopher Rierson's NPI number?

The NPI number for Christopher Rierson is 1912173741. It was assigned to this individual provider in the NPPES registry on May 1, 2008.

Where is Christopher Rierson located?

Christopher Rierson practices at 1200 1st Ave E Ste C, Spencer, IA 51301. The listed phone number is (712) 262-7511.

What is Christopher Rierson's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Is Christopher Rierson enrolled in Medicare?

Yes. Christopher Rierson is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Christopher Rierson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Christopher Rierson reassigns Medicare benefits to 3 organizations: Spencer Municipal Hospital (Spencer, IA), Lakes Regional Healthcare (Spirit Lake, IA) and Avera Mckennan (Worthington, MN). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Christopher Rierson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Christopher Rierson accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and Avera Health Plans and 3 other insurers list Christopher Rierson as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Christopher Rierson affiliated with any hospitals?

According to CMS data, Christopher Rierson is affiliated with Spencer Municipal Hospital, Lakes Regional Healthcare, Osceola Community Hospital, Avera Holy Family Hospital and Kossuth Regional Health Center.

When was this NPI record last updated?

The NPPES record for Christopher Rierson was last updated on October 1, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.