Dr. Jeffrey Jack Leya, MD
- Hospital affiliations
- 2
- Industry payments
- $19
- State license
- 1
- Year NPI issued
- 2016
- Practice address
- 1000 Fourth Street SW, Mason City, IA 50401
- Practice phone
- Call (641) 428-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Leya's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Jeffrey Jack Leya is a general practice physician in Mason City, Iowa
Dr. Leya practices at MercyOne North Iowa Medical Center in Mason City, Iowa, part of Trinity Health.
Dr. Leya's NPI, 1124479449, was assigned on June 28, 2016. Dr. Leya holds Nebraska license 30575.
- NPI
- 1124479449NPI Registry (opens in a new tab)
- NPI enumeration date
- June 28, 2016
- NPI status
- Active
- Practice phone
- (641) 428-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Jeffrey Jack Leya practices at MercyOne North Iowa Medical Center in Mason City, Iowa
Dr. Leya's primary practice is MercyOne North Iowa Medical Center, at 1000 Fourth Street SW, Mason City, IA 50401 in Cerro Gordo County. The practice phone is (641) 428-7000.
- MercyOne North Iowa Medical Center1000 Fourth Street SW, Mason City, IA 50401 · Cerro Gordo CountyPhone(641) 428-7000
Source: Dmand AI Affiliation Data
Dr. Jeffrey Jack Leya is affiliated with 3 sites of care
Dr. Leya's primary practice is MercyOne North Iowa Medical Center in Mason City, Iowa, part of Trinity Health. Dmand AI also links Dr. Leya to 1 hospital and 1 hospice, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Jeffrey Jack Leya's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Leya practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| MercyOne North Iowa Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Trinity Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Jeffrey Jack Leya is one of 30 general practice physicians in Iowa
General practice is Dr. Leya's primary specialty in the NPI Registry, under taxonomy code 208D00000X. Dr. Leya is licensed in Nebraska.
Specialties and state licenses
- General practice, NebraskaPrimary
General practice physicians near Dr. Leya
Counts of general practice physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Jeffrey Jack Leya's patients have a median age of 50
Across all payers, Dmand AI patient panel data puts Dr. Leya's median patient age at 50, with 50% women.
Dr. Leya's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 50
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. Jeffrey Jack Leya received $19 in industry payments in 2024
CMS Open Payments shows 1 general payment to Dr. Leya from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. Exact Sciences Corporation paid the most, $19.
Companies that paid Dr. Leya the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Jeffrey Jack Leya's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Jeffrey Jack Leya
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Jeffrey Jack Leya's NPI number?
Dr. Jeffrey Jack Leya's NPI number is 1124479449. It was assigned on June 28, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Jeffrey Jack Leya?
Dr. Jeffrey Jack Leya is a general practice physician in Mason City, Iowa. The primary specialty in the NPI Registry is General Practice Physician (taxonomy code 208D00000X).
Where does Dr. Jeffrey Jack Leya practice?
Dr. Leya practices at 1000 Fourth Street SW, Mason City, IA 50401. Dr. Leya's primary practice is MercyOne North Iowa Medical Center in Mason City, Iowa, part of Trinity Health. Dmand AI also links Dr. Leya to 1 hospital and 1 hospice.
What is Dr. Jeffrey Jack Leya's office phone number?
The practice phone on file for Dr. Leya is (641) 428-7000.
What is Dr. Jeffrey Jack Leya's medical license number?
Dr. Leya holds Nebraska license 30575.
Which hospitals is Dr. Jeffrey Jack Leya affiliated with?
Dr. Leya practices at MercyOne North Iowa Medical Center in Mason City, Iowa. Dmand AI links Dr. Leya to 1 more hospital.
Has Dr. Jeffrey Jack Leya received payments from drug or device companies?
CMS Open Payments shows $19 in general payments to Dr. Leya from 1 company from 2024 to 2024. The largest total came from Exact Sciences Corporation.
How long has Dr. Jeffrey Jack Leya been practicing?
Dr. Leya's NPI was assigned in 2016.
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