MS. JENNIFER CASTLE ARNP
NPI 1871031302
Clinical Nurse Specialist in Mason City, IA

Q: What is Jennifer Castle's NPI number?

The NPI number for Jennifer Castle is 1871031302. It was assigned to this individual provider in the NPPES registry on February 3, 2017.

Q: What is Jennifer Castle's specialty?

The primary specialty registered for this NPI is Clinical Nurse Specialist with taxonomy code 364S00000X.

Q: When was this NPI record last updated?

The NPPES record for Jennifer Castle was last updated on July 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.

Active since February 03, 2017PECOS EnrolledAccepts Medicare Assignment

1000 4TH ST SW, MASON CITY, IA 50401(641) 428-6300(641) 428-6347 Get Directions Write a Review

NPPES record last updated: July 15, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Oct 11, 2022, Apr 21, 2021, Jul 20, 2020 and 1 more (4 updates tracked since 2017).

On this page

About Ms. Jennifer Castle Arnp NPPES

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

MS. JENNIFER CASTLE ARNP (NPI 1871031302) is an individual clinical nurse specialist in Mason City, Iowa, licensed in Iowa (W107452) and active in the NPI registry since February 2017. She is enrolled in Medicare PECOS, is affiliated with Mercyone North Iowa Medical Center, and is a graduate of Other (2016).

NPPES Registry Identity

NPI1871031302

Entity TypeIndividualFemale

Primary Taxonomy364S00000X

Provider Legal NameMS. JENNIFER CASTLECredential: ARNP

Location Address1000 4TH ST SWMason City, IA 50401-2800

Mailing Address1000 4th St SwMason City, IA 50401-2800

Phone(641) 428-6300

Fax(641) 428-6347

Sole ProprietorNo

Medical School CMSOtherGraduated 2016

Enumeration DateFebruary 3, 2017

Last NPPES UpdateJuly 15, 20254 updates tracked since enumeration

NPPES CertifiedJuly 15, 2025

✔ NPI 1871031302 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinical Nurse SpecialistPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code364S00000X

License✔ Licensed in IA · W107452

Definition

A registered nurse who, through a graduate degree program in nursing, or through a formal post-basic education program or continuing education courses and clinical experience, is expert in a specialty area of nursing practice within one or more of the components of direct patient/client care, consultation, education, research and administration.

1000 4TH ST SW, Mason City, IA 50401

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Accepted Insurance

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

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Ms. Jennifer Castle 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 ID2961788856

PECOS Enrollment IDI20170406003026

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.

Areas of Expertise CMS Part B claims 5

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.

292 services201 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.

248 services188 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

127 services111 patients

Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212

This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.

16 services13 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.

13 services13 patients

Hospital Affiliations CMS Care Compare 5

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

Hancock County Health System

Critical Access Hospitals · Britt, IA

OwnershipGovernment - Local

CMS Certification Number161307

Location532 1st St NWBritt, IA 50423 · Hancock County

Emergency services

Franklin General Hospital

Critical Access Hospitals · Hampton, IA

OwnershipGovernment - Local

CMS Certification Number161308

Location1720 Central Avenue EastHampton, IA 50441 · Franklin County

Emergency services

Floyd County Medical Center

Critical Access Hospitals · Charles City, IA

3/5 CMS rating

OwnershipGovernment - Local

CMS Certification Number161347

Location800 11th StCharles City, IA 50616 · Floyd County

Emergency services Birthing friendly

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 50401 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

$122.23 typical visit price

range $52.96 – $161.40

Typical copayment $30.55 (range $13.24 – $40.35)

Most-billed visit code 99204

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 2

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

Breast prosthesis, mastectomy bra, without integrated breast prosthesis form, any size, any type L8000

DME-Orthotic Devices · category DF000N

2 suppliers35 claims88 services$33.52 avg. paid by Medicare

Breast prosthesis, silicone or equal, without integral adhesive L8030

DME-Orthotic Devices · category DF000N

1 supplier13 claims20 services$295.17 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.

LINDA S VOLD LISW

Social Worker (Clinical)

1000 4TH ST SW, SUITE BS
MASON CITY, IA 50401

Cerro Gordo County (641) 422-7797

BURT HUMBURG MD

Internal Medicine

1000 4TH ST SW
MASON CITY, IA 50401

Cerro Gordo County (641) 428-7000

SUMATHY NAGRAJ IYENGAR M.D.,

Hospitalist

1000 4TH ST SW, MERCY MEDICAL CENTER-HOSPITALIST DEPT
MASON CITY, IA 50401

Cerro Gordo County (641) 428-7000

DR. SATINDERJIT SINGH M.D.

Emergency Medicine

1000 4TH ST SW
MASON CITY, IA 50401

Cerro Gordo County (641) 428-7234

ASHLEY MATERN ARNP

Nurse Practitioner (Family)

1000 4TH ST SW
MASON CITY, IA 50401

Cerro Gordo County (641) 428-6999

ROBERT D. FROEHNER CRNA

Nurse Anesthetist, Certified Registered

1000 4TH ST SW
MASON CITY, IA 50401

Cerro Gordo County (641) 422-7000

DR. THOMAS P DELANEY MD

Hospitalist

1000 4TH ST SW, SUITE HOSP
MASON CITY, IA 50401

Cerro Gordo County (641) 422-7000

NORTH IOWA MERCY CLINICS

Nurse Practitioner

1000 4TH ST SW
MASON CITY, IA 50401

Cerro Gordo County (641) 428-5932

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 Jennifer Castle's NPI number?

The NPI number for Jennifer Castle is 1871031302. It was assigned to this individual provider in the NPPES registry on February 3, 2017.

Where is Jennifer Castle located?

Jennifer Castle practices at 1000 4th St SW, Mason City, IA 50401. The listed phone number is (641) 428-6300.

What is Jennifer Castle's specialty?

The primary specialty registered for this NPI is Clinical Nurse Specialist with taxonomy code 364S00000X.

Is Jennifer Castle enrolled in Medicare?

Yes. Jennifer Castle 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.

What insurance does Jennifer Castle accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Home State Health, Ambetter from NH Healthy Families and Ambetter from Sunflower Health Plan and 2 other insurers list Jennifer Castle 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 Jennifer Castle affiliated with any hospitals?

According to CMS data, Jennifer Castle is affiliated with Mercyone North Iowa Medical Center, Hancock County Health System, Franklin General Hospital, Floyd County Medical Center and Kossuth Regional Health Center.

When was this NPI record last updated?

The NPPES record for Jennifer Castle was last updated on July 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.