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MONICA MAHAJAN MD
NPI 1295708410
Internal Medicine - Geriatric Medicine in Elk Grove Village, IL

Active since February 08, 2006PECOS Enrolled
800 BIESTERFIELD RD STE 605, ELK GROVE VILLAGE, IL 60007(847) 364-6724 Get Directions Write a Review

NPPES record last updated: March 23, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Monica Mahajan Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MONICA MAHAJAN MD (NPI 1295708410) is an individual geriatric medicine provider in Elk Grove Village, Illinois, licensed in New York (235335) and active in the NPI registry since February 2006. She is enrolled in Medicare PECOS and maintains a secondary practice location in Buffalo.

NPPES Registry Identity

NPI1295708410
Entity TypeIndividualFemale
Primary Taxonomy207RG0300X
Provider Legal NameMONICA MAHAJANCredential: MD
Location Address800 BIESTERFIELD RD STE 605Elk Grove Village, IL 60007-3362
Mailing Address3 Gates CirBuffalo, NY 14209-1120 · (716) 887-4690
Phone(847) 364-6724
Sole ProprietorNo
Enumeration DateFebruary 8, 2006
Last NPPES UpdateMarch 23, 2021
NPPES CertifiedMarch 23, 2021
✔ NPI 1295708410 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Geriatric MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RG0300X
License✔ Licensed in NY · 235335
Definition
An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.
800 BIESTERFIELD RD STE 605, Elk Grove Village, IL 60007
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Secondary Practice Location 1

Location 13 Gates CirBuffalo, NY 14209-1120 · Phone (716) 887-4690

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Monica Mahajan Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Monica Mahajan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

The Board Of Trustees Of The University Of Illinois
19 mi
Dermatology
808 S WOOD ST
Chicago, IL 60612
  • Reassigned Medicare billing, Illinois enrollment
  • 2,127 clinicians in this Medicare group
NPI 1265651434 (312) 996-6966
St Bernard Hospital & Health Care Center
25 mi
Geriatric Medicine
6307 S STEWART AVE
Chicago, IL 60621
  • Reassigned Medicare billing, Illinois enrollment
  • Medicare enrollment name: St Bernard Hospital
  • 77 clinicians in this Medicare group
NPI 1700635190 (773) 420-1573

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 10

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
139 services105 patients
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309
A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.
113 services57 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
77 services40 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
62 services48 patients
Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes 99305
An initial nursing facility visit per day is a service where a healthcare professional spends about 35 minutes assessing a patient's health status. This includes reviewing medical history, conducting a physical exam, and developing a care plan based on the patient's needs.
53 services42 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
47 services47 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60007 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$183.39 typical visit price
range $60.08 – $183.39
Typical copayment $45.84 (range $15.02 – $45.84)
Most-billed visit code 99205
Established Patient
$105.70 typical visit price
range $18.97 – $148.12
Typical copayment $26.42 (range $4.74 – $37.03)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 11

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress E0260
DME-Hospital Beds · category DB000N
3 suppliers21 claims21 services$38.31 avg. paid by Medicare
Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
3 suppliers30 claims30 services$14.70 avg. paid by Medicare
Nebulizer, with compressor E0570
DME-Other DME · category DE000N
3 suppliers22 claims22 services$3.70 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
4 suppliers191 claims191 services$63.40 avg. paid by Medicare
Portable oxygen concentrator, rental E1392
DME-Oxygen and Supplies · category DC002N
1 supplier17 claims17 services$30.35 avg. paid by Medicare
Albuterol, up to 2.5 mg and ipratropium bromide, up to 0.5 mg, fda-approved final product, non-compounded, administered through dme J7620
DME-Drugs Administered Through DME · category DG006N
4 suppliers25 claims2,460 services$0.09 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

NAJMA LOKHANDWALA M.D.
Internal Medicine (Geriatric Medicine)
800 BIESTERFIELD RD STE 605
ELK GROVE VILLAGE, IL 60007
Cook County (847) 364-6724
DR. RYAN PETER BARTKUS M.D.
Family Medicine (Geriatric Medicine)
800 BIESTERFIELD RD STE 605
ELK GROVE VILLAGE, IL 60007
Cook County (847) 364-6724
ALEXIAN BROTHERS MEDICAL CENTER
Medicare Defined Swing Bed Unit
800 BIESTERFIELD RD STE 605, EBERLE MEDICAL OFFICE BUILDING
ELK GROVE VILLAGE, IL 60007
Cook County (718) 644-6778
MICHAEL PEPLOW D.O.
Internal Medicine
800 BIESTERFIELD RD STE 605
ELK GROVE VILLAGE, IL 60007
Cook County (847) 364-6724
ROWENA ABASOLO A.P.N.
Nurse Practitioner (Adult Health)
800 BIESTERFIELD RD STE 605
ELK GROVE VILLAGE, IL 60007
Cook County (847) 364-6724
MRS. ELIZABETH GERSON ANP
Nurse Practitioner (Adult Health)
800 BIESTERFIELD RD STE 605
ELK GROVE VILLAGE, IL 60007
Cook County (847) 364-6724

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Monica Mahajan's NPI number?

The NPI number for Monica Mahajan is 1295708410. It was assigned to this individual provider in the NPPES registry on February 8, 2006.

Where is Monica Mahajan located?

Monica Mahajan practices at 800 Biesterfield Rd Ste 605, Elk Grove Village, IL 60007. The listed phone number is (847) 364-6724.

What is Monica Mahajan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Geriatric Medicine, with taxonomy code 207RG0300X.

Is Monica Mahajan enrolled in Medicare?

Yes. Monica Mahajan is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Monica Mahajan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Monica Mahajan reassigns Medicare benefits to 2 organizations: The Board Of Trustees Of The University Of Illinois (Chicago, IL) and St Bernard Hospital & Health Care Center (Chicago, IL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Monica Mahajan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Monica Mahajan was last updated on March 23, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.