Physician Profile
Ramarathinam Nagarajan, MD PHD
Unclaimed ProfileAbout Dr. Nagarajan
Based in Minneapolis, MN, Ramarathinam Nagarajan, MD PHD is listed in the NPI registry under allergy/immunology. Ramarathinam is also listed as specializing in allergy & immunology. According to Medicare claims data, Ramarathinam cared for 221 Medicare patients across 1,450 services. The services billed most often include professional service for preparation and provision of 1 or more antigens, professional service for multiple injections of allergen, and established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more. NPI 1689636482 identifies this record in the national registry.
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
- (612) 339-0807
- Email not available
Practice Locations
825 NICOLLET MALL 221
Minneapolis, MN 55402
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
1,450 services · 221 patients · 6 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Professional service for preparation and provision of 1 or more antigens | Treatment | 95165 |
795 | As often as other peers in Allergy/Immunology |
| Professional service for multiple injections of allergen | Treatment | 95117 |
568 | More often than most peers in Allergy/Immunology |
| Test to measure expiratory airflow and volume | Treatment | 94010 |
23 | Less often than most peers in Allergy/Immunology |
| Evaluation of use of breathing device | Treatment | 94664 |
22 | 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 |
30 | As often as other 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 |
12 | 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 allergy/immunology specialists in Minneapolis 7
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 13 related providers in 2 groups
Class of 1976 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Professional service for preparation and provision of 1 or more antigens 5
Providers in MN who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Nagarajan?
Dr. Nagarajan is an allergy/immunology in Minneapolis, MN. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Dr. Nagarajan's address?
Dr. Nagarajan is listed at 825 Nicollet Mall 221, Minneapolis, MN 55402. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Nagarajan?
The number on file is (612) 339-0807. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Nagarajan's NPI number?
Dr. Nagarajan's National Provider Identifier is 1689636482. 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 Dr. Nagarajan train?
Dr. Nagarajan attended Other, graduating in 1976. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Nagarajan been practicing?
Dr. Nagarajan has 50 years experience. Calculated from a graduation year of 1976, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Nagarajan perform?
According to Medicare billing data, Dr. Nagarajan provides treatments such as professional service for preparation and provision of 1 or more antigens and professional service for multiple injections of allergen, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Nagarajan confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Nagarajan. If this is you, claiming it is free.
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