Amyloid Neuropathies, FamilialCardiomyopathiesHeart Failure
Dr. Stefano H. Byer, MD
NPI1164108395
- Part D claims, 2024
- 380
- Publications
- 15
- Hospital affiliations
- 1
- Industry payments
- $880
- State license
- 1
- Practice address
- 400 East Polk Street, Washington, IA 52353
- Practice phone
- Call (319) 653-5481
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Stefano H. Byer is an internist in Washington, Iowa
Dr. Byer practices at Washington County Hospital and Clinics in Washington, Iowa, part of Washington County Hospital and Clinics.
Dr. Byer's NPI, 1164108395, was assigned on June 22, 2023. Dr. Byer holds Iowa license R-12900.
NPI and contact details
- NPI
- 1164108395NPI Registry (opens in a new tab)
- NPI enumeration date
- June 22, 2023
- NPI status
- Active
- Practice phone
- (319) 653-5481
- 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. Stefano H. Byer practices at Washington County Hospital and Clinics in Washington, Iowa
Dr. Byer's primary practice is Washington County Hospital and Clinics, at 400 East Polk Street, Washington, IA 52353 in Washington County. The practice phone is (319) 653-5481.
- Washington County Hospital and Clinics400 East Polk Street, Washington, IA 52353 · Washington CountyPhone(319) 653-5481
Source: Dmand AI Affiliation Data
Dr. Stefano H. Byer is affiliated with 1 site of care
Dr. Byer's primary practice is Washington County Hospital and Clinics in Washington, Iowa, part of Washington County Hospital and Clinics.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Stefano H. Byer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Byer practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Washington County Hospital and Clinics | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Stefano H. Byer is one of 726 internists in Iowa
Internal medicine is Dr. Byer's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Byer is licensed in Iowa.
Specialties and state licenses
- Internal medicine, IowaPrimary
Internists near Dr. Byer
Counts of internists 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. Stefano H. Byer's patients have a median age of 72
Across all payers, Dmand AI patient panel data puts Dr. Byer's median patient age at 72, with 25% women.
Dr. Byer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women25%
- Men75%
Source: Dmand AI Patient Panel Data
Dr. Stefano H. Byer wrote 380 Medicare Part D claims in 2024
In 2024, Dr. Byer wrote 380 Medicare Part D claims for 56 patients. 82% of them were for generic drugs. CMS names the drug for 162 of them, across 9 drugs with 11 or more claims each, at $19,372 in total drug cost.
Part D claims, 2024380
Drugs named by CMS9
Total drug cost$19,372
Part D patients56
Dr. Byer's Part D claims by kind of drug, 2024
- Generic313 claims82%
- Brand-name and other67 claims18%
Dr. Byer's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Byer's Part D claims, 2024
- Antibiotics5%18 of 380 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Stefano H. Byer has 15 publications on record
Dmand AI links 15 papers to Dr. Byer, published from 2017 to 2025. 2024 was the busiest year, with 6. The most frequent topics are Electrocardiography, Immune Checkpoint Inhibitors and Myocarditis. Dr. Byer has published most often in Heart Rhythm. Dr. Byer's most frequent co-authors are Paari Dominic, MBBS, Shareef Mansour, MBBS and Mario Zanaty, MD.
Papers15
Years published2017 to 2025
Dr. Byer's papers by year, 2017 to 2025
Topics Dr. Byer writes about most
- Electrocardiography
- Immune Checkpoint Inhibitors
- Myocarditis
Dr. Byer's most frequent co-authors
- Paari Dominic, MBBS3 shared papers
- Shareef Mansour, MBBS3 shared papers
- Mario Zanaty, MD2 shared papers
Recent publications by Dr. Byer
AbataceptImmune Checkpoint InhibitorsMuscle Weakness
See who Dr. Byer researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Byer works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Stefano H. Byer received $880 in industry payments from 2023 to 2025
CMS Open Payments shows 11 general payments to Dr. Byer from 7 drug and device companies from 2023 to 2025. Food and beverage make up the largest share, 100% of the total. Boston Scientific Corporation paid the most, $240.
General payments to Dr. Byer by program year, 2023 to 2025
Companies that paid Dr. Byer the most, 2023 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Stefano H. Byer'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 |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Stefano H. Byer
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. Stefano H. Byer's NPI number?
Dr. Stefano H. Byer's NPI number is 1164108395. It was assigned on June 22, 2023, and it is active in the NPI Registry.
What kind of doctor is Dr. Stefano H. Byer?
Dr. Stefano H. Byer is an internist in Washington, Iowa. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Stefano H. Byer practice?
Dr. Byer practices at 400 East Polk Street, Washington, IA 52353. Dr. Byer's primary practice is Washington County Hospital and Clinics in Washington, Iowa, part of Washington County Hospital and Clinics.
What is Dr. Stefano H. Byer's office phone number?
The practice phone on file for Dr. Byer is (319) 653-5481.
What is Dr. Stefano H. Byer's medical license number?
Dr. Byer holds Iowa license R-12900.
Which hospitals is Dr. Stefano H. Byer affiliated with?
Dr. Byer practices at Washington County Hospital and Clinics in Washington, Iowa.
What drugs does Dr. Stefano H. Byer prescribe most?
In 2024 Medicare Part D data, Dr. Byer's most prescribed drugs by claims were Atorvastatin Calcium, Duloxetine HCl and Lisinopril.
Has Dr. Stefano H. Byer received payments from drug or device companies?
CMS Open Payments shows $880 in general payments to Dr. Byer from 7 companies from 2023 to 2025. The largest total came from Boston Scientific Corporation.
How long has Dr. Stefano H. Byer been practicing?
Dr. Byer's NPI was assigned in 2023.
Does Dr. Stefano H. Byer do research?
Dmand AI links 15 publications to Dr. Byer, published from 2017 to 2025.
Who does Dr. Stefano H. Byer publish with?
Dr. Byer's most frequent co-authors are Paari Dominic, MBBS (3 shared papers), Shareef Mansour, MBBS (3 shared papers) and Mario Zanaty, MD (2 shared papers).
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