Active NPI
North Iowa Mercy Clinics
Doing business as MercyOne North Iowa Cancer Center
- Medical Oncology Physician
- Mason City, IA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Medical Oncology Physician
- Legal business name
- NORTH IOWA MERCY CLINICS
- Doing business as
- MercyOne North Iowa Cancer Center
- Practice address
- 1000 4TH St SW
Mason City, IA 50401-2800 - Phone
- (641) 428-6300
- Fax
- (641) 428-6374
- NPI assigned
- Aug 23, 2006
- Last updated
- Mar 5, 2026
- Organization subpart
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Authorized official
- Name
- Mark C Trammel
- Title
- VP Fianance
- Phone
- (641) 428-7984
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Medical Oncology Physician | 207RX0202X | Primary |
Addresses
Primary practice location
1000 4TH St SW
Mason City, IA 50401-2800
Mailing address
1000 4TH St SW
Mason City, IA 50401-2800
Other names 1
- MercyOne North Iowa Cancer Center
Electronic endpoints 2
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| CONNECT URL | https://cobiusconnect.cobius.com:8291/Gateway/DocumentSubmission/2_0/NhinService/XDRRequest_Service | Other | Cobius Healthcare Solutions |
| Direct Messaging Address | mercy.cancer.center@trinityhealthia.medicity.net | Direct | MercyOne North Iowa |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in IA
Enrollment records 1
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| O20031105000273 | IA | Part B Supplier - Clinic/Group Practice | 7810809076 |
Receives reassigned benefits from 477 practitioners 39 other NPIs on this enrollment This NPI is an additional NPI on the enrollment |
Other NPIs on the same Medicare enrollment 39
NPIs listed together on one Medicare enrollment, typically parts of the same organization.
-
dba MercyOne North Iowa Kidney Care
- Nephrology Physician
- Mason City, IA
- NPI 1003082736
O20031105000273
-
dba MercyOne North Iowa Wound Care
- Nurse Practitioner
- Mason City, IA
- NPI 1043321102
O20031105000273
-
dba MercyOne Clear Lake Pediatric & Adolescent Clinic
- Pediatric Adolescent Medicine Physician
- Clear Lake, IA
- NPI 1093720708
O20031105000273
-
dba MercyOne North Iowa Radiation Oncology
- Nurse Practitioner
- Mason City, IA
- NPI 1093810426
O20031105000273
-
dba Mercy Family Clinic-Rockwell
- Family Medicine Physician
- Rockwell, IA
- NPI 1215948252
O20031105000273
-
dba Mercy Heart Center Electrophysiology Services
- Cardiovascular Disease Physician
- Mason City, IA
- NPI 1306018122
O20031105000273
-
dba MercyOne North Iowa Obstetrics & Gynecology
- Obstetrics & Gynecology Physician
- Mason City, IA
- NPI 1306857347
O20031105000273
-
dba Mercy Bariatrics Center
- Surgery Physician
- Mason City, IA
- NPI 1336398825
O20031105000273
-
dba MercyOne North Iowa Neurosurgery Care
- Neurological Surgery Physician
- Mason City, IA
- NPI 1336665744
O20031105000273
-
dba Mercy Family Care Charles City
- Family Medicine Physician
- Charles City, IA
- NPI 1447413703
O20031105000273
-
dba Mercy Vascular Medicine Clinic
- Cardiovascular Disease Physician
- Mason City, IA
- NPI 1457701989
O20031105000273
-
dba MercyOne Greene Family Medicine
- Family Medicine Physician
- Greene, IA
- NPI 1497763841
O20031105000273
National Provider Directory
National Provider DirectoryMember of 1
Organizations this organization is a member of, according to the National Provider Directory.
Locations
40 Fair Ln
Tiffin, OH 44883
Phone (419) 448-3693
Practitioners & affiliated clinicians
Practitioners 13
Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.
-
- Hospitalist Physician
- Mason City, IA
- NPI 1609224674
-
- Clinical Nurse Specialist
- Mason City, IA
- NPI 1871031302
-
- Family Nurse Practitioner
- Clear Lake, IA
- NPI 1164054755
-
- Physician Assistant
- Mason City, IA
- NPI 1992147391
-
- Nurse Practitioner
- Mason City, IA
- NPI 1285298943
-
- Family Nurse Practitioner
- Mason City, IA
- NPI 1073215026
-
- Adult Health Clinical Nurse Specialist
- Mason City, IA
- NPI 1588289672
-
- Hematology & Oncology Physician
- Berlin, MD
- NPI 1972506111
-
- Internal Medicine Physician
- La Crosse, WI
- NPI 1326500190
-
- Hematology & Oncology Physician
- San Antonio, TX
- NPI 1023022365
-
- Hematology & Oncology Physician
- Battle Creek, MI
- NPI 1962663674
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1156291200000",
"enumeration_type": "NPI-2",
"last_updated_epoch": "1772668800000",
"number": "1972610376",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1000 4TH ST SW",
"city": "MASON CITY",
"state": "IA",
"postal_code": "504012800"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1000 4TH ST SW",
"city": "MASON CITY",
"state": "IA",
"postal_code": "504012800",
"telephone_number": "641-428-6300",
"fax_number": "641-428-6374"
}
],
"practiceLocations": [],
"basic": {
"organization_name": "NORTH IOWA MERCY CLINICS",
"organizational_subpart": "NO",
"enumeration_date": "2006-08-23",
"last_updated": "2026-03-05",
"certification_date": "2026-03-05",
"status": "A",
"authorized_official_last_name": "TRAMMEL",
"authorized_official_first_name": "MARK",
"authorized_official_middle_name": "C",
"authorized_official_title_or_position": "VP FIANANCE",
"authorized_official_telephone_number": "641-428-7984"
},
"taxonomies": [
{
"code": "207RX0202X",
"taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
"desc": "Internal Medicine, Medical Oncology",
"state": null,
"license": null,
"primary": true
}
],
"identifiers": [],
"endpoints": [
{
"endpointType": "CONNECT",
"endpointTypeDescription": "CONNECT URL",
"endpoint": "https://cobiusconnect.cobius.com:8291/Gateway/DocumentSubmission/2_0/NhinService/XDRRequest_Service",
"affiliation": "Y",
"endpointDescription": "2.16.840.1.113883.3.1068.1",
"affiliationName": "Cobius Healthcare Solutions",
"use": "OTHER",
"useDescription": "Other",
"useOtherDescription": "CMS esMD eMDR",
"address_1": "2720 Dundee Rd # 302",
"city": "Northbrook",
"state": "IL",
"country_code": "US",
"postal_code": "600622609",
"country_name": "United States",
"address_type": "DOM"
},
{
"endpointType": "DIRECT",
"endpointTypeDescription": "Direct Messaging Address",
"endpoint": "mercy.cancer.center@trinityhealthia.medicity.net",
"affiliation": "Y",
"endpointDescription": "Direct Email Address",
"affiliationName": "MercyOne North Iowa",
"use": "DIRECT",
"useDescription": "Direct",
"contentType": "OTHER",
"contentTypeDescription": "Other",
"contentOtherDescription": "CCDA",
"address_1": "1000 4th St SW",
"city": "Mason City",
"state": "IA",
"country_code": "US",
"postal_code": "504012800",
"country_name": "United States",
"address_type": "DOM"
}
],
"other_names": [
{
"organization_name": "MercyOne North Iowa Cancer Center",
"code": "3",
"type": "Doing Business As"
}
]
}
Other providers in Mason City, IA
- North Iowa Mercy Clinics (MercyOne Diabetes Care)
- North Iowa Mercy Clinics (Glucose Control Services-Pediatric)
- North Iowa Mercy Clinics (MercyOne North Iowa Family Medicine Residency)
- North Iowa Mercy Clinics (MercyOne North Iowa Hospitalist)
- North Iowa Mercy Clinics (Mercy Dermatology Center)
- North Iowa Mercy Clinics (MercyOne North Iowa Family and Sports Medicine)
- North Iowa Mercy Clinics (MercyOne Mason City Pediatric & Adolescent Clinic)
- North Iowa Oral Surgery and Dental Implant Center, LLP
- North Iowa Sleep Lab
- North Iowa Transition Center
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 5, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.