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MRS. ANNA CHRISTINE TOOMSEN ARNP
NPI 1619326543
Nurse Practitioner - Family in Sheffield, IA

Active since June 10, 2016PECOS EnrolledAccepts Medicare Assignment
203 S 2ND ST, SHEFFIELD, IA 50475(641) 892-4495(641) 892-4527 Get Directions Write a Review

NPPES record last updated: July 14, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Mrs. Anna Christine Toomsen Arnp NPPES

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

MRS. ANNA CHRISTINE TOOMSEN ARNP (NPI 1619326543) is an individual family provider in Sheffield, Iowa, licensed in Iowa (125585) and active in the NPI registry since June 2016. She is enrolled in Medicare PECOS, is affiliated with Mercyone North Iowa Medical Center, and is a graduate of Other (2016).

NPPES Registry Identity

NPI1619326543
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameMRS. ANNA CHRISTINE TOOMSENCredential: ARNP
Location Address203 S 2ND STSheffield, IA 50475-5008
Mailing Address621 S Illinois Ave, Suite 103Mason City, IA 50401-5489 · (641) 428-3041 · Fax (641) 428-3059
Phone(641) 892-4495
Fax(641) 892-4527
Sole ProprietorNo
Medical School CMSOtherGraduated 2016
Enumeration DateJune 10, 2016
Last NPPES UpdateJuly 14, 2025
NPPES CertifiedJuly 14, 2025
✔ NPI 1619326543 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in IA · 125585
203 S 2ND ST, Sheffield, IA 50475
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

Mrs. Anna Christine Toomsen Arnp 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 ID1658662267
PECOS Enrollment IDI20160628002638
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 Reassignment

Medicare enrollment records show Anna Toomsen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

North Iowa Mercy Clinics
0.1 mi
Family Medicine
203 S 2ND ST
Sheffield, IA 50475
  • Reassigned Medicare billing, Iowa enrollment
  • 420 clinicians in this Medicare group
NPI 1972513026 (641) 892-4495

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 6

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.

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.
454 services189 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.
163 services103 patients
Anticoagulant management of patient taking warfarin 93793
Anticoagulant management with warfarin involves monitoring and adjusting your medication to prevent blood clots while minimizing the risk of bleeding. Regular blood tests measure your response to warfarin, helping adjust your dose if necessary. It's crucial to maintain a consistent diet and promptly report any changes in your health.
129 services15 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
126 services126 patients
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.
25 services17 patients
Destruction of precancer skin growth, 1 growth 17000
"Destruction of precancer skin growth" is a procedure that eliminates a single precancerous skin growth. This is done to prevent it from developing into skin cancer. The growth may be removed using various methods such as cryotherapy (freezing), laser therapy, or topical medications.
16 services14 patients

Hospital Affiliations CMS Care Compare 3

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

Mercyone North Iowa Medical Center

Acute Care Hospitals · Mason City, IA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number160064
Location1000 Fourth Street SWMason City, IA 50401 · Cerro Gordo County
Emergency services Birthing friendly

Mercyone Des Moines Medical Center

Acute Care Hospitals · Des Moines, IA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number160083
Location1111 6th AveDes Moines, IA 50314 · Polk County
Emergency services Birthing friendly

Franklin General Hospital

Critical Access Hospitals · Hampton, IA
OwnershipGovernment - Local
CMS Certification Number161308
Location1720 Central Avenue EastHampton, IA 50441 · Franklin County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 50475 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
$94.05 typical visit price
range $16.91 – $131.98
Typical copayment $23.51 (range $4.22 – $32.99)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 17

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

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
6 suppliers37 claims73 services$5.21 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
4 suppliers16 claims17 services$0.75 avg. paid by Medicare
Full face mask used with positive airway pressure device, each A7030
DME-Other DME · category DE001N
3 suppliers15 claims15 services$111.84 avg. paid by Medicare
Face mask interface, replacement for full face mask, each A7031
DME-Other DME · category DE001N
3 suppliers12 claims24 services$43.40 avg. paid by Medicare
Cushion for use on nasal mask interface, replacement only, each A7032
DME-Other DME · category DE001N
4 suppliers18 claims40 services$24.40 avg. paid by Medicare
Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034
DME-Other DME · category DE001N
4 suppliers17 claims17 services$61.07 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 3

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

JOY MORETZ
Physician Assistant (Medical)
203 S 2ND ST
SHEFFIELD, IA 50475
Franklin County (641) 892-4495
AMBER MARZEN ARNP
Nurse Practitioner (Family)
203 S 2ND ST
SHEFFIELD, IA 50475
Franklin County (641) 892-4495
NORTH IOWA MERCY CLINICS
Family Medicine
203 S 2ND ST
SHEFFIELD, IA 50475
Franklin County (641) 892-4495

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 Anna Toomsen's NPI number?

The NPI number for Anna Toomsen is 1619326543. It was assigned to this individual provider in the NPPES registry on June 10, 2016.

Where is Anna Toomsen located?

Anna Toomsen practices at 203 S 2nd St, Sheffield, IA 50475. The listed phone number is (641) 892-4495.

What is Anna Toomsen's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Anna Toomsen enrolled in Medicare?

Yes. Anna Toomsen 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 organization bills Medicare for Anna Toomsen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Anna Toomsen reassigns Medicare benefits to North Iowa Mercy Clinics (Sheffield, IA). The 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 Anna Toomsen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Anna Toomsen accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and Oscar Health and 2 other insurers list Anna Toomsen 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 Anna Toomsen affiliated with any hospitals?

According to CMS data, Anna Toomsen is affiliated with Mercyone North Iowa Medical Center, Mercyone Des Moines Medical Center and Franklin General Hospital.

When was this NPI record last updated?

The NPPES record for Anna Toomsen was last updated on July 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months 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.