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Edit this profileAt a glance
- 200 1St St Sw, Rochester, MN 55905
About Dr. Hagan
John B. Hagan, M.D. is a healthcare provider in Rochester, MN specializing in allergy & immunology. John trained at University of Tennessee, Hsc, College of Medicine, graduating in 1989. John is also listed as specializing in internal medicine. Medicare claims data shows John provided 2,071 services to 190 patients. The services billed most often include test for allergy using allergenic extract, test for allergy using combination of methods with drug or biological, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. This provider record is associated with NPI 1366429573.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (507) 284-2511
- Email not available
Practice Locations
200 1ST ST SW
Rochester, MN 55905
Conditions Commonly Evaluated or Treated
Within Allergy and Immunology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Allergies
Digestive
Drug allergies
Drug allergy
Emergency
Environmental
Eye
Food allergies
- Egg Allergy
- Milk Allergy
- Peanut Allergy
- Shellfish Allergy
- Soy Allergy
- Tree Nut Allergy
- Wheat Allergy
Immune conditions
Immunology
- Common Variable Immunodeficiency
- Frequent Infections
- Hereditary Angioedema
- Mast Cell Activation Syndrome
- Weak Immune System
Lung conditions
Respiratory
Sinus
Sinus conditions
Skin
Skin conditions
Procedures & services
Most searched procedures
Allergy treatments
- Allergy Drops
- Asthma Biologics
- Food Desensitization
- Peanut Allergy Pill Treatment
- Sublingual Dust Mite Treatment
- Under-The-Tongue Allergy Tablets
Diagnostic
- Asthma challenge test
- Drug Challenge Test
- Exercise Challenge Breathing Test
- Exhaled nitric oxide test
- Ice Cube Test for Cold Allergy
- Immune System Blood Test
- Nasal endoscopy
- Oral Food Challenge
- Peak Flow Test
- Penicillin Allergy Testing
- Spirometry
- Tryptase Blood Test
- Vaccine Challenge Test
- Vaccine Response Antibody Test
Infusion
Medication therapy
Medications
Preventive
Respiratory
Tests
- Allergy Blood Testing
- Allergy Skin Prick Test
- Blood Component Allergy Test
- Complement Blood Test
- Eosinophil Blood Count
- Intradermal Allergy Test
- Pulmonary function test
- Skin Test For Metal Allergy
- Total IgE Blood Test
Treatment
Procedures Most Often Billed to Medicare
2,071 services · 190 patients · 8 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Test for allergy using allergenic extract | Treatment | 95004 |
1,824 | As often as other peers in Allergy & Immunology |
| Test for allergy using combination of methods with drug or biological | Treatment | 95018 |
101 | As often as other peers in Allergy & Immunology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
41 | Less often than most peers in Allergy & Immunology |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
39 | More often than most peers in Allergy & Immunology |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
26 | As often as other peers in Allergy & Immunology |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
16 | Less often than most peers in Allergy & Immunology |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
13 | Less often than most peers in Allergy & Immunology |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
11 | Less often than most peers in Allergy & Immunology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other allergists in Rochester 8
Same specialty, same city.
Trained at University of Tennessee, Hsc, College of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 13 related providers in 2 groups
Class of 1989 at University of Tennessee, Hsc, College of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Test for allergy using allergenic extract 5
Providers in MN who bill this service to Medicare most often.
Common questions
What does John B. Hagan specialize in?
John B. Hagan is an allergist in Rochester, MN. That is the designation recorded for this NPI in the federal registry, where it is listed as “Allergy & Immunology”.
NPI registry
Where is John B. Hagan located?
John B. Hagan is listed at 200 1St St Sw, Rochester, MN 55905. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is John B. Hagan's phone number?
The number on file is (507) 284-2511. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for John B. Hagan?
John B. Hagan's National Provider Identifier is 1366429573. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did John B. Hagan train?
John B. Hagan attended University of Tennessee, Hsc, College of Medicine, graduating in 1989. This comes from the CMS National Downloadable File.
CMS public data
How much experience does John B. Hagan have?
John B. Hagan has 37 years experience. Calculated from a graduation year of 1989, reported in the CMS National Downloadable File.
CMS public data
What does John B. Hagan do most often?
According to Medicare billing data, John B. Hagan provides treatments such as test for allergy using allergenic extract and test for allergy using combination of methods with drug or biological, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is John B. Hagan's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by John B. Hagan. If this is you, claiming it is free.
Guide.md
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