CAITLIN LEE MOSTEK CNM, ARNP, MSN
NPI 1740051218
Advanced Practice Midwife in Waterloo, IA

Active since January 12, 2024PECOS EnrolledAccepts Medicare Assignment
3421 W 9TH ST STE G4500, WATERLOO, IA 50702(319) 272-8200(319) 272-0400 Get Directions Write a Review

NPPES record last updated: March 26, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Caitlin Lee Mostek Cnm, Arnp, Msn NPPES

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

CAITLIN LEE MOSTEK CNM, ARNP, MSN (NPI 1740051218) is an individual advanced practice midwife in Waterloo, Iowa, licensed in Iowa (B177499) and active in the NPI registry since January 2024. She is enrolled in Medicare PECOS, is affiliated with Mercyone Waterloo Medical Center, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1740051218
Entity TypeIndividualFemale
Primary Taxonomy367A00000X
Provider Legal NameCAITLIN LEE MOSTEKCredential: CNM, ARNP, MSN
Location Address3421 W 9TH ST STE G4500Waterloo, IA 50702-5401
Mailing Address3421 W 9th St Ste G4500Waterloo, IA 50702-5401 · (319) 272-8200 · Fax (319) 272-0400
Fax(319) 272-0400
Sole ProprietorNo
Medical School CMSUniversity Of Cincinnati College Of MedicineGraduated 2023
Enumeration DateJanuary 12, 2024
Last NPPES UpdateMarch 26, 2026
NPPES CertifiedMarch 26, 2026
✔ NPI 1740051218 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAdvanced Practice MidwifePhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code367A00000X
License✔ Licensed in IA · B177499
Definition
Advanced practice midwifery encompasses the independent provision of care during pregnancy, childbirth, and the postpartum period; sexual and reproductive health; gynecologic health; and family planning services, including preconception care. Midwives also provide primary care for individuals from adolescence throughout the lifespan as well as care for the healthy newborn during the first 28 days of life. Midwives provide initial and ongoing comprehensive assessment, diagnosis, and treatment. Midwifery care includes health promotion, disease prevention, risk assessment and management, and individualized wellness education and counseling. Source: American College of Nurse-Midwives, www.midwife.org Additional Resources: See the American College of Nurse-Midwives, www.midwife.org, for more information on Certified Nurse-Midwives, Certified Midwives, the American Midwifery Certification Board (AMCB), and licensure.
Also ListedMidwifeTaxonomy 176B00000X
3421 W 9TH ST STE G4500, Waterloo, IA 50702

Secondary Practice Locations 2

Location 1500 E Market StIowa City, IA 52245-2633 · Phone (319) 356-2294 · Fax (319) 248-7945
Location 2200 Hawkins DrIowa City, IA 52242-1009 · Phone (319) 356-2294 · Fax (319) 384-7346

Accepted 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

Caitlin Lee Mostek Cnm, Arnp, Msn 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 ID3870939945
PECOS Enrollment IDI20240312000278
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

2

Medicare enrollment records show Caitlin Mostek reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Emergency Medicine
3421 W 9TH ST
Waterloo, IA 50702
  • Reassigned Medicare billing, Iowa enrollment
  • 271 clinicians in this Medicare group
Family Medicine
105 9TH AVE
Belle Plaine, IA 52208
  • Reassigned Medicare billing, Iowa enrollment
  • 2,190 clinicians in this Medicare group

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

Hospital Affiliations CMS Care Compare

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

Mercyone Waterloo Medical Center

Acute Care Hospitals · Waterloo, IA
4/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number160067
Location3421 West Ninth StreetWaterloo, IA 50702 · Black Hawk County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 50702 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.

Other Providers at the Same Location NPPES 12

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

Midwife
3421 W 9TH ST STE G4500
WATERLOO, IA 50702
Advanced Practice Midwife
3421 W 9TH ST STE G4500
WATERLOO, IA 50702
Advanced Practice Midwife
3421 W 9TH ST STE G4500
WATERLOO, IA 50702
Obstetrics & Gynecology
3421 W 9TH ST STE G4500
WATERLOO, IA 50702
Physician Assistant
3421 W 9TH ST STE G4500
WATERLOO, IA 50702
Advanced Practice Midwife
3421 W 9TH ST STE G4500
WATERLOO, IA 50702
Advanced Practice Midwife
3421 W 9TH ST STE G4500
WATERLOO, IA 50702
Obstetrics & Gynecology
3421 W 9TH ST STE G4500
WATERLOO, IA 50702

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 Caitlin Mostek's NPI number?

The NPI number for Caitlin Mostek is 1740051218. It was assigned to this individual provider in the NPPES registry on January 12, 2024.

Where is Caitlin Mostek located?

Caitlin Mostek practices at 3421 W 9th St Ste G4500, Waterloo, IA 50702. The listed phone number is (319) 272-8200.

What is Caitlin Mostek's specialty?

The primary specialty registered for this NPI is Advanced Practice Midwife with taxonomy code 367A00000X.

Is Caitlin Mostek enrolled in Medicare?

Yes. Caitlin Mostek 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 Caitlin Mostek's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Caitlin Mostek reassigns Medicare benefits to 2 organizations: Covenant Medical Center Inc (Waterloo, IA) and State University Of Iowa (Belle Plaine, IA). 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 Caitlin Mostek's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Caitlin Mostek accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and Oscar Health and 3 other insurers list Caitlin Mostek 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 Caitlin Mostek affiliated with any hospitals?

According to CMS data, Caitlin Mostek is affiliated with Mercyone Waterloo Medical Center.

When was this NPI record last updated?

The NPPES record for Caitlin Mostek was last updated on March 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.