NPI Details
DR. Dheeraj Mahajan, M.D. is an internal medicine in Oak Park, IL with 29 years of experience. The provider is a physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs. DR. Dheeraj Mahajan, M.D. NPI is 1831133693. The provider is registered as an individual entity type and is a multi-specialty group.
The NPPES NPI record indicates the provider is a male.
The provider's business location address is:
101 MADISON ST STE 300
OAK PARK, IL
ZIP 60302-210
Phone: (708) 486-2700
Fax: (708) 486-2700
The NPI 1831133693 is registered in the Medicare Provider, Enrollment, Chain and Ownership System (PECOS). The provider is legally eligible to order and refer Part B (Clinical Laboratory and Imaging), Durable Medical Equipment, Part A Home Health Agency (HHA), Power Mobility Devices.
The following top HCPCS codes were publicly reported for this provider under the Medicare program for the year 2016. The reported codes are based on the top codes for each available Medicare specialty, excluding evaluation and management codes.
- Fee covid-19 vac 13 res (HCPCS:0124A)
- Fee covid-19 vac 14 res (HCPCS:0134A)
- Adm sarscov2 30mcg/0.3ml bst (HCPCS:0004A)
- Adm sarscov2 50mcg/0.25mlbst (HCPCS:0064A)
- Coronavirus vaccine 13 (HCPCS:91312)
- Adm sarscv2 30mcg trs-sucr b (HCPCS:0054A)
- Intravenous injection, bebtelovimab, includes injection and post administration monitoring (HCPCS:M0222)
- Injection, bebtelovimab, 175 mg (HCPCS:Q0222)
- Coronavirus vaccine 14 (HCPCS:91313)
- Adm sarscov2 50 mcg/.5 mlbst (HCPCS:0094A)
- Intramuscular administration of single severe acute respiratory syndrome coronavirus 2 (covid-19) vaccine, mrna-lnp, spike protein, preservative free, 30 mcg/0.3ml dosage, diluent reconstituted; first dose (HCPCS:0001A)
- Intramuscular administration of single severe acute respiratory syndrome coronavirus 2 (covid-19) vaccine, mrna-lnp, spike protein, preservative free, 30 mcg/0.3ml dosage, diluent reconstituted; second dose (HCPCS:0002A)
- Administration of influenza virus vaccine (HCPCS:G0008)
- Influenza vaccine, quadrivalent, preservative free, 0.5 ml dosage (HCPCS:90686)
- Adm sarscov2 30mcg/0.3ml 3rd (HCPCS:0003A)
- Adm sarscov2 100mcg/0.5ml3rd (HCPCS:0013A)
- Intramuscular administration of single severe acute respiratory syndrome coronavirus 2 (covid-19) vaccine, mrna-lnp, spike protein, preservative free, 100 mcg/0.5ml dosage; second dose (HCPCS:0012A)
- Intramuscular administration of single severe acute respiratory syndrome coronavirus 2 (covid-19) vaccine, mrna-lnp, spike protein, preservative free, 100 mcg/0.5ml dosage; first dose (HCPCS:0011A)
- Influenza vaccine split virus, preservative free (HCPCS:90662)
- Adm sarscov2 vac ad26 .5ml b (HCPCS:0034A)
- Severe acute respiratory syndrome coronavirus 2 (covid-19) vaccine, mrna-lnp, spike protein, preservative free, 30 mcg/0.3ml dosage, diluent reconstituted, for intramuscular use (HCPCS:91300)
- Injection, bebtelovimab, 175 mg (HCPCS:Q0222)
The enumeration date for this NPI number is 6/15/2006 and was last updated on 7/30/2025.
Taxonomy Codes
The NPI record includes the healthcare provider taxonomy classification, state license number and state of licensure. The following information regarding the scope of practice of this provider is available:
| No. |
Taxonomy Code |
Taxonomy Clasification |
Taxonomy Specialization |
License Number |
License State |
Primary |
| 1 | 207R00000X | Internal Medicine | | 036-106392 | ILLINOIS | No |
| 2 | 207R00000X | Internal Medicine | | 036106392 | ILLINOIS | Yes |
Other Identifiers
The following information regarding additional identifiers associated to this NPI record includes the other identifier number, identifier type, identifier state and issuer.
| No. |
Other Provider Identifier |
Other Provider Identifier Type |
Other Provider Identifier State |
Other Provider Identifier Issuer |
| 1 | 036106392 | MEDICAID | ILLINOIS | |
