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NORTH IOWA MERCY CLINICS
NPI 1922118918
Family Medicine in Mason City, IA

Active since August 30, 2006
621 S ILLINOIS AVE, SUITE 100, MASON CITY, IA 50401(641) 428-6900(641) 428-6909 Get Directions Write a Review

NPPES record last updated: March 5, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Mar 5, 2026, Nov 30, 2020, Feb 19, 2020 and 1 more (4 updates tracked since 2017).

About North Iowa Mercy Clinics NPPES

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

NORTH IOWA MERCY CLINICS (NPI 1922118918), doing business as Mercyone Regency Family Medicine, is a healthcare organization registered as a family medicine in Mason City, Iowa and active in the NPI registry since August 2006. The organization lists Mark C Trammel, Vp Finance, as its authorized official.

NPPES Registry Identity

NPI1922118918
Entity TypeOrganization
Primary Taxonomy207Q00000X
Legal Business NameNORTH IOWA MERCY CLINICS
Location Address621 S ILLINOIS AVE, SUITE 100Mason City, IA 50401-5489
Mailing Address1000 4th St SwMason City, IA 50401-2800
Phone(641) 428-6900
Fax(641) 428-6909
Organization SubpartNo
Authorized OfficialMark C TrammelVp Finance · (641) 428-7984
Enumeration DateAugust 30, 2006
Last NPPES UpdateMarch 5, 20264 updates tracked since enumeration
NPPES CertifiedMarch 5, 2026
✔ NPI 1922118918 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
621 S ILLINOIS AVE, Mason City, IA 50401
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Other Names 1

Doing Business AsMercyone Regency Family Medicine

Other Identifiers 2

Medicaid0183715IA
Other47681IA · Wellmark

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

North Iowa Mercy Clinics is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

419

Medicare enrollment records show 419 clinicians reassign Medicare billing to North Iowa Mercy Clinics, which bills Medicare for the services they deliver. Of these, 8 practice at this address and 194 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 49

Nurse Practitioner73
Certified Registered Nurse Anesthetist (CRNA)55
Family Practice44
Internal Medicine26
Cardiovascular Disease (Cardiology)23
Emergency Medicine20
Anesthesiology17
Obstetrics/Gynecology17
41 other specialties144

Nearest to this location (20)

See all 419
Analisa Haberman, DO
Family Practice
NPI 1639289655
621 S ILLINOIS AVE SUITE 100
Mason City, IA 50401
(641) 422-6900
✔ PECOS✔ Accepts MedicareSame address
Brandon Hart, MD
Family Practice
NPI 1770077562
621 S ILLINOIS AVE
Mason City, IA 50401
(641) 428-6900
✔ PECOS✔ Accepts MedicareSame address
Megan Hejlik, ARNP
Nurse Practitioner
NPI 1750167193
621 S ILLINOIS AVE
Mason City, IA 50401
(641) 428-6900
✔ PECOS✔ Accepts MedicareSame address
John Pflugi, DO
Internal Medicine
NPI 1790179331
621 S. ILLINOIS AVE SUITE 100
Mason City, IA 50401
(641) 428-6900
✔ PECOS✔ Accepts MedicareSame address
Sarah Prahm, APRN
Nurse Practitioner
NPI 1265109458
621 S ILLINOIS AVE STE 100
Mason City, IA 50401
(641) 428-6900
✔ PECOS✔ Accepts MedicareSame address
Chereen Stroup, MD
Family Practice
NPI 1457385742
621 S ILLINOIS AVE
Mason City, IA 50401
(641) 428-6900
✔ PECOS✔ Accepts MedicareSame address
Jean Westendorf, ARNP
Nurse Practitioner
NPI 1083609929
621 S ILLINOIS AVE SUITE 100
Mason City, IA 50401
(641) 428-6900
✔ PECOS✔ Accepts MedicareSame address
Andrea Madrigal
Nurse Practitioner
NPI 1255209839
621 S ILLINOIS AVE
Mason City, IA 50401
(641) 428-6900
✔ PECOS✔ Accepts MedicareSame address
Jenna Haglund, LMSW
Clinical Social Worker
NPI 1629513536
22 N GEORGIA AVE STE 102
Mason City, IA 50401
(641) 422-0070
✔ PECOS✔ Accepts Medicare1.5 mi
Michael Gerber
Nurse Practitioner
NPI 1639607757
404 N FEDERAL AVE
Mason City, IA 50401
(641) 450-0601
✔ PECOS✔ Accepts Medicare1.6 mi
Richard Rattin, D.O.
Cardiovascular Disease (Cardiology)
NPI 1316101462
1446 N CAROLINA AVE
Mason City, IA 50401
(707) 890-1273
✔ PECOS✔ Accepts Medicare1.8 mi
Byron Beasley, MD
Internal Medicine
NPI 1053398180
250 S CRESCENT DR
Mason City, IA 50401
(641) 494-5300
✔ PECOS2.4 mi
Samuel Congello, D.O.
Interventional Cardiology
NPI 1609869254
250 S CRESCENT DR
Mason City, IA 50401
(641) 494-5300
✔ PECOS✔ Accepts Medicare2.4 mi
Thomas Schnabel, OTR/L
Occupational Therapist in Private Practice
NPI 1962369678
250 S CRESCENT DR
Mason City, IA 50401
(641) 494-5210
2.4 mi
Christopher Adams, M.D.
Urology
NPI 1336301563
250 S CRESCENT DR
Mason City, IA 50401
(641) 494-5280
✔ PECOS✔ Accepts Medicare2.4 mi
Erik Brink, D.O.
General Surgery
NPI 1396942116
250 S CRESCENT DR
Mason City, IA 50401
(641) 494-5260
✔ PECOS✔ Accepts Medicare2.4 mi
Michael Crane, M.D.
Orthopedic Surgery
NPI 1033102686
250 S CRESCENT DR
Mason City, IA 50401
(641) 494-5210
✔ PECOS2.4 mi
Michael Del Rio, M.D.
Thoracic Surgery
NPI 1073557757
250 S CRESCENT DR
Mason City, IA 50401
(641) 494-5300
✔ PECOS✔ Accepts Medicare2.4 mi
Timothy Dettmer, M.D.
Otolaryngology
NPI 1275527111
250 S CRESCENT DR
Mason City, IA 50401
(641) 494-5380
✔ PECOS✔ Accepts Medicare2.4 mi
Scott Donohoe, DPM
Podiatry
NPI 1346233541
250 S CRESCENT DR
Mason City, IA 50401
(641) 494-5340
✔ PECOS✔ Accepts Medicare2.4 mi
See all 419 clinicians

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

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 North Iowa Mercy Clinics's NPI number?

The NPI number for North Iowa Mercy Clinics is 1922118918. It was assigned to this organization in the NPPES registry on August 30, 2006. The provider is doing business as MercyOne Regency Family Medicine.

Where is North Iowa Mercy Clinics located?

North Iowa Mercy Clinics is located at 621 S Illinois Ave Suite 100, Mason City, IA 50401. The listed phone number is (641) 428-6900.

What is North Iowa Mercy Clinics's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is North Iowa Mercy Clinics enrolled in Medicare?

Yes. North Iowa Mercy Clinics is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through North Iowa Mercy Clinics?

According to the CMS Revalidation Reassignment List (October 2026 release), 419 clinicians in 49 Medicare specialties reassign their Medicare billing to North Iowa Mercy Clinics. A 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 the clinician's services. The largest specialties are Nurse Practitioner (73), Certified Registered Nurse Anesthetist (CRNA) (55) and Family Practice (44). Of these, 8 practice at this address and 194 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for North Iowa Mercy Clinics was last updated on March 5, 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.