Internists in Mason City, IA
- Internists
- 28
- Linked to a hospital or group
- 21
- Hospitals with an internist
- 15
- Medical groups with an internist
- 7
- Practice at a hospital
- 21
There are 28 internists in Mason City. MercyOne North Iowa Anesthesia Professional Services has the most, 14, and MercyOne North Iowa Medical Center has the most affiliated internists, 21. 18% finished medical school 30 or more years ago.
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Validated work emails and mobile numbers for Mason City internists, found through healthcare waterfall enrichment, with a free Dmand AI account.
Mason City internists, listed A to Z by last name
Each internist on the list has internal medicine as their primary specialty and a Mason City practice address. The list shows the NPI, and how many hospitals and medical groups each one practices with. A free account names every hospital and group, with validated contacts.
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The list shows the 24 internists with a public profile. The other 4 are counted in the total and searchable with a free account.
Sources: NPPES NPI Registry (CMS) and Dmand AI Affiliation Data
For health IT teams
Dmand AI has the EHR for 22 of 28 Mason City internists, at their hospital and their practice. Filter by Epic, Oracle Health, MEDITECH, athenahealth and more, then reach them with validated work emails and mobile numbers.
MercyOne North Iowa Anesthesia Professional Services has the most internists in Mason City, with 14
Cogent Healthcare of Iowa is second with 7, and Loring Hospital third with 1. Counts are internists with an Iowa address linked to each group.
Sources: Dmand AI Affiliation Data and Dmand AI Org Hierarchy Data
MercyOne North Iowa Medical Center has the most affiliated internists in Mason City, with 21
Hancock County Health System is second with 9, and Franklin General Hospital third with 8. Mason City internists are affiliated with 15 hospitals in all.
See every hospital and group for each Mason City internist
Each public profile names one place an internist practices. A free account shows all of them, with the employer, the EHR and validated contacts.
Source: Dmand AI Affiliation Data
Most Mason City internists practice at a hospital: 21 of the 21 with a mapped site
19 also practice at hospices, and 7 at a medical group site. An internist can practice at several kinds of site, so the shares overlap.
Mason City internists by site of care
- Hospitals21
- Hospices19
- Medical group practices7
Sources: Dmand AI Affiliation Data and Dmand AI Practice Data
18% of Mason City internists finished medical school 30 or more years ago
3 of the 17 Mason City internists with a graduation year on file. 5 graduated in the last 10 years.
Physicians by years since medical school
- Under 10 years ago5
- 10 to 19 years ago7
- 20 to 29 years ago2
- 30 to 39 years ago1
- 40 or more years ago2
Source: Dmand AI Professional Profile Data
Every Mason City internist profile shows current hospitals and groups, Medicare activity and NPI details
- Primary practiceThe main place they practice, with its type and cityOn every profile
- Every site of careEach hospital, clinic and group where they practice nowWith a free account
- EmployerThe organization they work for, when one is on fileWith a free account
- Medicare servicesServices and procedure codes billed to Medicare, from CMSOn every profile
- Medicare Part D prescribingClaims and drug costs from Part D, from CMSOn every profile
- Industry paymentsPayments from drug and device makers, from CMS Open PaymentsOn every profile
- Publications and clinical trialsResearch papers and trials linked to the NPI, when on fileOn every profile
- Licenses and graduation yearState license numbers and medical school graduation yearOn every profile
- NPI detailsNPI, enumeration date, primary taxonomy and practice addressOn every profile
- Work email and mobile numberFound on request through healthcare waterfall enrichment, then validatedWith a free account
- EHR in useThe EHR at each site where they practiceWith a free account
- Colleagues at each siteThe clinicians they work with at each hospital and groupWith a free account
Free account: 30 days free, self-serve, no credit card.
Sources: NPPES NPI Registry (CMS), Medicare Physician & Other Practitioners (CMS), Open Payments (CMS) and Dmand AI Affiliation Data
Sources for the Mason City internist directory
| Data on this page | Source |
|---|---|
| HCPs, types and specialties | NPPES NPI Registry (CMS) and Dmand AI Professional Profile Data |
| Sites of care, hospitals and medical groups | Dmand AI Affiliation Data |
| Medical school graduation year | Dmand AI Professional Profile Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
Internists are HCPs whose primary specialty is internal medicine (taxonomy code 207R00000X), with an active NPI and a Mason City practice address.
FAQ
Frequently asked questions about internists in Mason City
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
How many internists are in Mason City?
28 internists have an active NPI, a Mason City practice address and internal medicine (taxonomy code 207R00000X) as their primary specialty. 21 of them are linked to a hospital or medical group.
Which Mason City medical groups have the most internists?
MercyOne North Iowa Anesthesia Professional Services, with 14, followed by Cogent Healthcare of Iowa with 7 and Loring Hospital with 1.
Which Mason City hospitals have the most internists?
MercyOne North Iowa Medical Center, with 21 affiliated internists, followed by Hancock County Health System with 9 and Franklin General Hospital with 8.
What share of Mason City internists practice at a hospital?
21 of the 21 Mason City internists with a mapped site of care, or 100%, have a current hospital affiliation.
What is the taxonomy code for internal medicine?
207R00000X is the NPPES taxonomy code for internal medicine. Sub-specialties with their own code are counted on their own lists.
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