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Edit this profileAt a glance
- 101 Madison St Ste 300, Oak Park, IL 60302
About Dr. Mahajan
Dheeraj Mahajan, M.D. is a healthcare provider in Oak Park, IL specializing in internal medicine. Medicare claims data shows Dheeraj provided 12,466 services to 11,416 patients. The services billed most often include admn sarscov2 vacc 1 dose, sarscv2 vac 30mcg trs-suc im, and administration of influenza virus vaccine. This provider record is associated with NPI 1831133693.
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
- (708) 486-2700
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
101 MADISON ST STE 300
Oak Park, IL 60302
Conditions Commonly Evaluated or Treated
Within Internal Medicine 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
Cancer Prevention
Cancer risk
Environmental health
- Asbestos Exposure
- Contaminated drinking water exposure
- Heat exhaustion and heat stroke
- Radon gas exposure
- Tick bite and Lyme disease risk
- Toxic Mold Exposure
- Wildfire smoke and air pollution exposure
- Workplace Chemical Exposure
General wellness
Heart health
Infectious Disease
Infectious disease
Kidney health
Lifestyle & wellness
Lifestyle health
Longevity
Metabolic & Lifestyle
Occupational health
Occupational Health
Rashes & allergy
Sexual Health
Sexual health
Substance use
Travel health
Wellness and energy
Workplace health
Most searched conditions
Cardiometabolic
Digestive and liver
Endocrine, blood, and bone
Kidney and urinary
Respiratory
Blood & Circulation
Blood disorders
Brain & Nerves
Brain and nerves
Cardiac and vascular
Digestive
Heart & Circulation
Infections
Kidney & Bladder
Lungs & Breathing
Mental Health
Neurologic and behavioral
Pain
Rheumatologic and pain
Procedures & services
Addiction & habits
Cancer screening
Cancer Screening
Checkups & exams
Chronic illness
Diagnostics & screening
Environmental health
Fitness & body composition
Heart & Circulation
- Blood Pressure Check
- Heart monitor
Heart & circulation
Heart health
Hospital-based procedures
Imaging referral
Immunizations
Infection & Microbiology Tests
- STI and STD Screening
- H. Pylori Breath Test
Lifestyle & Prevention
Longevity
Lower endoscopy
Lungs & Breathing
Metabolic & Weight
Metabolic health
Occupational health
Occupational Health
Office Procedures
Preventive and evaluation
- Preoperative medical clearance
- Medication management
- Post-hospital transitional care
Preventive imaging
Preventive screening
Routine Blood Tests
Screening & labs
Screening and diagnostic testing
- Blood pressure screening
- Cancer screening and prevention planning
- Diabetes and prediabetes screening
- EKG
- Spirometry
Screenings & Diagnostics
Travel Health
Travel medicine
Wellness
Wellness & Screening
Workplace health
Skin growths
Sleep
Most searched procedures
Bones & Joints
Brain and nerves
Digestive
- Endoscopy
Exams & Consultations
Lab tests
Minor procedures
Office procedures
Pain management
Preventive & Routine Care
Sexual health
Procedures Most Often Billed to Medicare
12,466 services · 11,416 patients · 11 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Admn sarscov2 vacc 1 dose | Treatment | 90480 |
3,854 | More than most peers in Internal Medicine |
| Sarscv2 vac 30mcg trs-suc im | Treatment | 91320 |
2,477 | More than most peers in Internal Medicine |
| Influenza vaccine, inactivated | Treatment | 90653 |
1,828 | More than most peers in Internal Medicine |
| Sarscov2 vac 50 mcg/0.5ml im | Treatment | 91322 |
1,376 | More than most peers in Internal Medicine |
| Influenza vaccine, trivalent, split virus, preservative-free, 0.5 ml dosage | Treatment | 90656 |
202 | More than most peers in Internal Medicine |
| Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | Treatment | 90677 |
108 | More than most peers in Internal Medicine |
| Influenza vaccine, trivalent derived from cell cultures | Treatment | 90661 |
86 | More often than most peers in Internal Medicine |
| Influenza vaccine split virus, preservative free | Treatment | 90662 |
17 | Less often than most peers in Internal Medicine |
| Administration of influenza virus vaccine | Billing code | G0008 |
2,135 | More than most peers in Internal Medicine |
| Administration of pneumococcal, influenza, hepatitis b, and/or covid-19 vaccine inside a patient's home; reported only once per individual home per date of service when such vaccine administration(s) are performed at the patient's home | Billing code | M0201 |
278 | More than most peers in Internal Medicine |
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.
Other internists at this location 5
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 8
Clinically related specialties at the same address — the people this provider most likely works alongside.
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.
More connections — 30 related providers in 4 groups
Other internists in Oak Park 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1997 at Other 7
Providers who graduated from the same medical school in the same year.
Also performs Admn sarscov2 vacc 1 dose 7
Providers in IL who bill this service to Medicare most often.
Common questions
What kind of doctor is Dheeraj Mahajan?
Dheeraj Mahajan is an internist in Oak Park, IL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
What is Dheeraj Mahajan's address?
Dheeraj Mahajan is listed at 101 Madison St Ste 300, Oak Park, IL 60302. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dheeraj Mahajan?
The number on file is (708) 486-2700. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dheeraj Mahajan?
Dheeraj Mahajan's National Provider Identifier is 1831133693. 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 Dheeraj Mahajan train?
Dheeraj Mahajan attended Other, graduating in 1997. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dheeraj Mahajan have?
Dheeraj Mahajan has 29 years experience. Calculated from a graduation year of 1997, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dheeraj Mahajan perform?
According to Medicare billing data, Dheeraj Mahajan provides treatments such as admn sarscov2 vacc 1 dose and sarscv2 vac 30mcg trs-suc im. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dheeraj Mahajan's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dheeraj Mahajan. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.