Dr. John Hagan, M.D.
Allergy/immunology
21+
Years in Practice
Available
Telehealth
Practice Locations
10 locations
Mayo Clinic
200 1st St Sw, Rochester, Minnesota, 55905
(507) 284-2511
Mayo Clinic
200 1st St Sw, Rochester, Minnesota, 55905
Mayo Clinic
200 1st St Sw, Rochester, Minnesota, 55905
(507) 284-2512
Third Optometric Care Of California
180 El Cerrito Plz, El Cerrito, California, 94530
(510) 526-2242
Mayo Clinic Health System-southeast Minnesota Region
200 1st St Sw, Rochester, Minnesota, 55905
(507) 284-2511
About Dr. John Hagan
John Hagan, M.D. is a healthcare provider practicing in Rochester, MN.
Specialty Definition
An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system.
37
Years Experience
10
Locations
1
States Licensed
Credentials & Board Certifications
Additional Specialties
Primary Specialty
Allergy/immunologyCredentials verified via NPI Registry (NPPES)
Education & Training
Medical School
University Of Tennessee, Hsc, College Of Medicine
Class of 1989
Licenses & Practice States
Licensed in 1 state
| State | License | Classification | Primary |
|---|---|---|---|
| Minnesota | 33534 | Internal Medicine | — |
| Minnesota | 33534 | Allergy & Immunology |
Public Data Summary for Dr. John Hagan
With 21 years of practice, Dr. John Hagan is an established allergy/immunology provider, M.D., after earning their medical degree at University Of Tennessee, Hsc, College Of Medicine in 1989. Dr. currently practices across 10 facilities, including Mayo Clinic in Rochester, Minnesota. Their National Provider Identifier (NPI) is 1366429573, and the profile below combines data from CMS NPPES, Medicare billing records, the HHS OIG exclusion list, and — where available — CMS Open Payments, Medicare Utilization, and Part D prescriber summaries.
CMS Medicare data shows Dr. John Hagan as a lower-volume allergy/immunology provider, treating approximately 242 Medicare beneficiaries and delivering 2K services in the most recent reporting year. That panel size indicates a smaller, more selective practice pattern.
Transparency & Safety
Public records from CMS and OIG databases
Opioid Prescribing
This provider has no opioid prescriptions on file in Medicare Part D data.
Insurance & Accessibility
Reviews
Community reviews for Dr. John Hagan
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0 reviews
Allergy/immunology Providers Nearby
Same primary specialty near ZIP 55905
FAQ
Frequently asked questions about Dr. John Hagan
What does Dr. John Hagan specialize in?
Dr. John Hagan specializes in Allergy/immunology. Secondary taxonomy filings also list Internal Medicine.
Where does Dr. John Hagan practice?
Dr. John Hagan practices at Mayo Clinic in Rochester, Minnesota. Dr. is also affiliated with 9 additional facilities, listed below.
Does Dr. John Hagan accept Medicare?
CMS records show that Dr. John Hagan accepts Medicare assignment. CMS billing data shows 242 Medicare beneficiaries treated in the most recent reporting year.
What is Dr. John Hagan's NPI number?
Dr. John Hagan's National Provider Identifier (NPI) is 1366429573. This is the unique 10-digit number the Centers for Medicare & Medicaid Services assigns to every practicing US healthcare provider. You can verify this number directly at the NPPES NPI Registry.
How long has Dr. John Hagan been practicing?
Dr. John Hagan has approximately 21 years of practice experience, having graduated from University Of Tennessee, Hsc, College Of Medicine in 1989.