AJAY DAR M.D.
NPI 1215905286
Internal Medicine - Medical Oncology in Leesburg, VA

Active since March 08, 2006PECOS EnrolledAccepts Medicare Assignment
91.96/100
CMS Quality Rating
44035 RIVERSIDE PKWY STE 300, LEESBURG, VA 20176(703) 208-3155(703) 724-7503 Get Directions Write a Review

NPPES record last updated: November 12, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Nov 12, 2025, Nov 3, 2025, Jul 1, 2024 and 1 more (4 updates tracked since 2022).

About Ajay Dar M.d. NPPES

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

AJAY DAR M.D. (NPI 1215905286) is an individual medical oncology provider in Leesburg, Virginia, licensed in Virginia (0101231668) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS, is affiliated with Inova Loudoun Hospital, and is a graduate of Other (1984).

NPPES Registry Identity

NPI1215905286
Entity TypeIndividualMale
Primary Taxonomy207RX0202X
Provider Legal NameAJAY DARCredential: M.D.
Location Address44035 RIVERSIDE PKWY STE 300Leesburg, VA 20176-8260
Mailing Address3040 Williams Dr Ste 100Fairfax, VA 22031-4618 · (571) 350-8400 · Fax (703) 940-8692
Fax(703) 724-7503
Sole ProprietorNo
Medical School CMSOtherGraduated 1984
Enumeration DateMarch 8, 2006
Last NPPES UpdateNovember 12, 20254 updates tracked since enumeration
NPPES CertifiedNovember 12, 2025
NPI 1215905286 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RX0202X
License Licensed in VA · 0101231668
Definition
An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.
Also ListedInternal MedicineTaxonomy 207R00000X · License 0101231668 (VA)
44035 RIVERSIDE PKWY STE 300, Leesburg, VA 20176

Other Identifiers 15

Other541795091VA · One Health Plan
Other231788VA · Southern Health
Other0460402VA · Cigna Hmo
Other466399VA · Trigon/anthem
Other500617-3351765VA · Aetna Hmo
Other541795091VA · Fx Cty Comm Health
Other615136VA · Ncppo
Medicaid1215905286VA
Other500617-5556519VA · Aetna Ppo
Other541795091VA · First Health
Other541795091VA · Phcs Pos/ppo
Other0870-0019VA · Bcbs Nca/care First
Other2110876VA · Mamsoi/op Choice/alliance
Other236852VA · Kaiser
Other541795091VA · Tricare

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Ajay Dar M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2961392121
PECOS Enrollment IDI20100108000673, I20100308000040
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.

Areas of Expertise CMS Part B claims 72

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.

Injection, ferric carboxymaltose, 1 mg J1439
Ferric carboxymaltose is an iron supplement injection. It's given when your body needs more iron than you can consume through diet, like in anemia. The injection is administered by a healthcare professional into a vein.
17,250 services14 patients
Injection, daratumumab, 10 mg and hyaluronidase-fihj J9144
Daratumumab and hyaluronidase-fihj is an injection administered to treat certain types of blood cancer. The medication works by targeting and killing specific cancer cells. It's often given under the skin to reduce side effects and improve patient comfort.
12,960 services13 patients
Injection, pembrolizumab, 1 mg J9271
Pembrolizumab is a medication given via injection to help your body's immune system fight certain types of cancer. It's typically administered in a hospital or clinic by a healthcare professional.
7,700 services14 patients
Injection, denosumab, 1 mg J0897
Denosumab is a medication given via injection to strengthen your bones. It works by slowing down the cells that break down bone, improving bone density and reducing the risk of fractures. It's often used for osteoporosis treatment.
2,880 services13 patients
Injection, dexamethasone sodium phosphate, 1 mg J1100
Dexamethasone sodium phosphate is a medication given via injection. It is a type of steroid that helps reduce inflammation and immune responses. It can be used to treat a variety of conditions, such as allergies, skin conditions, arthritis, and more.
1,528 services52 patients
Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
1,363 services341 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Inova Loudoun Hospital

Acute Care Hospitals · Leesburg, VA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number490043
Location44045 Riverside ParkwayLeesburg, VA 20176 · Loudoun County
Emergency services Birthing friendly

Inova Fairfax Hospital

Acute Care Hospitals · Falls Church, VA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number490063
Location3300 Gallows RoadFalls Church, VA 22042 · Fairfax County
Emergency services Birthing friendly

Reston Hospital Center

Acute Care Hospitals · Reston, VA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number490107
Location1850 Town Center ParkwayReston, VA 20190 · Fairfax County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20176 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
$170.30 typical visit price
range $56.19 – $170.30
Typical copayment $42.57 (range $14.04 – $42.57)
Most-billed visit code 99205
Established Patient
$99.13 typical visit price
range $18.07 – $138.91
Typical copayment $24.78 (range $4.51 – $34.72)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

91.96/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality81.4
Promoting Interoperability100
Improvement Activities40

Referred Medical Equipment & Supplies CMS DME claims 7

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

Parenteral nutrition solution, not otherwise specified, 10 grams lipids B4185
Other-Enteral and Parenteral · category OB005N
1 supplier11 claims286 services$11.42 avg. paid by Medicare
Parenteral nutrition supply kit; premix, per day B4220
Other-Enteral and Parenteral · category OB005N
1 supplier11 claims54 services$8.14 avg. paid by Medicare
Parenteral nutrition administration kit, per day B4224
Other-Enteral and Parenteral · category OB005N
1 supplier11 claims54 services$25.41 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
1 supplier11 claims11 services$13.53 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
1 supplier11 claims11 services$63.69 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511
Treatment-Chemotherapy · category RH012N
2 suppliers17 claims17 services$19.01 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 7

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

Nurse Practitioner (Family)
44035 RIVERSIDE PKWY STE 300
LEESBURG, VA 20176
Internal Medicine (Hematology & Oncology)
44035 RIVERSIDE PKWY STE 300
LEESBURG, VA 20176
Nurse Practitioner (Family)
44035 RIVERSIDE PKWY STE 300
LEESBURG, VA 20176
Nurse Practitioner (Adult Health)
44035 RIVERSIDE PKWY STE 300
LEESBURG, VA 20176
Internal Medicine (Hematology & Oncology)
44035 RIVERSIDE PKWY STE 300
LEESBURG, VA 20176
Nurse Practitioner (Adult Health)
44035 RIVERSIDE PKWY STE 300
LEESBURG, VA 20176
Internal Medicine (Hematology & Oncology)
44035 RIVERSIDE PKWY STE 300
LEESBURG, VA 20176

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 Ajay Dar's NPI number?

The NPI number for Ajay Dar is 1215905286. It was assigned to this individual provider in the NPPES registry on March 8, 2006.

Where is Ajay Dar located?

Ajay Dar practices at 44035 Riverside Pkwy Ste 300, Leesburg, VA 20176. The listed phone number is (703) 208-3155.

What is Ajay Dar's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Is Ajay Dar enrolled in Medicare?

Yes. Ajay Dar is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Ajay Dar affiliated with any hospitals?

According to CMS data, Ajay Dar is affiliated with Inova Loudoun Hospital, Inova Fairfax Hospital and Reston Hospital Center.

When was this NPI record last updated?

The NPPES record for Ajay Dar was last updated on November 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months 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.