DR. DHEERAJ MAHAJAN (M.D.) – Internal Medicine Physician, NPI 1831133693
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
8,824 INTERNAL MEDICINE in IL
Provider Addresses for DR. DHEERAJ MAHAJAN (M.D.)
101 MADISON ST STE 300
OAK PARK, IL 603024210
Phone: (708) 486-2700
Fax: (708) 486-2702
Type: Mailing
North Avenue, Melrose Park, Proviso Township, Cook County, Illinois, 60160, United States
SUITE 606
MELROSE PARK, IL 601601634
Phone: (708) 681-7877
Fax: (800) 801-6284
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2004-02-07
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20040207000226 | I | Internal Medicine | IL | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 90480 | Admn sarscov2 vacc 1 dose | 2,193 | 2,184 | $0 |
| 91320 | Sarscv2 vac 30mcg trs-suc im | 1,235 | 1,232 | $0 |
| 91322 | Sarscov2 vac 50 mcg/0.5ml im | 952 | 950 | $0 |
| G0008 | Administration of influenza virus vaccine | 814 | 812 | $0 |
| 90662 | Influenza vaccine split virus, preservative free | 709 | 708 | $0 |
Insurance plans in this area (ZIP 60302)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | IL | |
| Nurse Practitioner | IL | |
| Internal Medicine | MN | |
| Internal Medicine | IL | |
| Hospitalist, Internal Medicine | IL | |
| Internal Medicine | PA | |
| Nurse Practitioner | IL | |
| Family Practice | IL | |
| Nurse Practitioner | IL | |
| - | IL |
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