NORTH IOWA MERCY CLINICS
NPI 1306857347
Obstetrics & Gynecology in Mason City, IA

Active since August 11, 2006
1010 4TH ST SW STE 220, MASON CITY, IA 50401(641) 428-5100(641) 428-5115 Get Directions Write a Review

NPPES record last updated: March 4, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Mar 4, 2026, Nov 30, 2020, Feb 18, 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 1306857347), doing business as Mercyone North Iowa Obstetrics & Gynecology, is a healthcare organization registered as an obstetrics & gynecology 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

NPI1306857347
Entity TypeOrganization
Primary Taxonomy207V00000X
Legal Business NameNORTH IOWA MERCY CLINICS
Location Address1010 4TH ST SW STE 220Mason City, IA 50401-2856
Mailing Address1000 4th St SwMason City, IA 50401-2800
Fax(641) 428-5115
Organization SubpartNo
Authorized OfficialMark C TrammelVp Finance · (641) 428-7984
Enumeration DateAugust 11, 2006
Last NPPES UpdateMarch 4, 20264 updates tracked since enumeration
NPPES CertifiedMarch 4, 2026
✔ NPI 1306857347 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
1010 4TH ST SW STE 220, Mason City, IA 50401

Other Names 1

Doing Business AsMercyone North Iowa Obstetrics & Gynecology

Other Identifiers 1

Medicaid0207720IA

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, 27 practice at this address and 206 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
Internal Medicine
NPI 1285323535
1010 4TH ST SW STE 305
Mason City, IA 50401
(641) 428-5700
✔ PECOS✔ Accepts MedicareSame address
Registered Dietitian or Nutrition Professional
NPI 1306407176
1010 4TH ST SW STE 120
Mason City, IA 50401
(641) 428-6020
✔ Accepts MedicareSame address
Obstetrics/Gynecology
NPI 1356870034
1010 4TH ST SW STE 220
Mason City, IA 50401
(641) 428-5100
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1447275540
1010 4TH ST SW SUITE 32
Mason City, IA 50401
(641) 422-5100
✔ PECOS✔ Accepts MedicareSame address
Neurosurgery
NPI 1710099809
1010 4TH ST SW SUITE 105
Mason City, IA 50401
(641) 428-7847
✔ PECOSSame address
Family Practice
NPI 1770699423
1010 4TH ST SW
Mason City, IA 50401
(641) 422-6020
✔ PECOS✔ Accepts MedicareSame address
Neurosurgery
NPI 1982813622
1010 4TH ST SW SUITE 105
Mason City, IA 50401
(641) 428-7847
✔ PECOS✔ Accepts MedicareSame address
Family Practice
NPI 1780795393
1010 4TH ST SW
Mason City, IA 50401
(641) 428-6020
✔ PECOS✔ Accepts MedicareSame address
Family Practice
NPI 1073951570
1010 4TH ST SW STE 240
Mason City, IA 50401
(641) 428-7766
✔ PECOS✔ Accepts MedicareSame address
Obstetrics/Gynecology
NPI 1255362265
1010 4TH ST SW SUITE 32
Mason City, IA 50401
(641) 428-5100
✔ PECOS✔ Accepts MedicareSame address
Obstetrics/Gynecology
NPI 1518992932
1010 4TH ST SW SUITE 32
Mason City, IA 50401
(641) 428-5100
✔ PECOSSame address
Internal Medicine
NPI 1548408867
1010 4TH ST SW STE 305
Mason City, IA 50401
(641) 428-5700
✔ PECOS✔ Accepts MedicareSame address
Family Practice
NPI 1295115798
1010 4TH ST SW SUITE 340
Mason City, IA 50401
(641) 428-7766
✔ PECOSSame address
Family Practice
NPI 1316390974
1010 4TH ST SW SUITE 340
Mason City, IA 50401
(641) 428-7766
✔ PECOS✔ Accepts MedicareSame address
Family Practice
NPI 1063523090
1010 4TH ST SW SUITE 340
Mason City, IA 50401
(641) 428-7766
✔ PECOS✔ Accepts MedicareSame address
Clinical Psychologist
NPI 1891940730
1010 4TH ST SW SUITE 340
Mason City, IA 50401
(641) 428-7766
✔ PECOS✔ Accepts MedicareSame address
Internal Medicine
NPI 1548943509
1010 4TH ST SW SUITE 305
Mason City, IA 50401
(641) 428-5700
✔ PECOSSame address
Internal Medicine
NPI 1548377997
1010 4TH ST SW STE 305
Mason City, IA 50401
(641) 428-5700
✔ PECOS✔ Accepts MedicareSame address
Obstetrics/Gynecology
NPI 1174548259
1010 4TH ST SW SUITE 32
Mason City, IA 50401
(641) 422-2100
✔ PECOS✔ Accepts MedicareSame address
Internal Medicine
NPI 1073202412
1010 4TH ST SW STE 305
Mason City, IA 50401
(641) 428-5700
✔ PECOS✔ Accepts MedicareSame address
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 1306857347. It was assigned to this organization in the NPPES registry on August 11, 2006. The provider is doing business as MercyOne North Iowa Obstetrics & Gynecology.

Where is North Iowa Mercy Clinics located?

North Iowa Mercy Clinics is located at 1010 4th St SW Ste 220, Mason City, IA 50401. The listed phone number is (641) 428-5100.

What is North Iowa Mercy Clinics's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

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, 27 practice at this address and 206 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 4, 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.