Dr. Ajay Dar, MD
- Medicare services, 2024
- 54,013
- Medicare patients, 2024
- 642
- Part D claims, 2024
- 846
- Hospital affiliations
- 3
- Industry payments
- $4,775
- Practice address
- 44035 Riverside Pkwy, Leesburg, VA 20176
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Inova Loudoun Ambulatory Surgery Center - HOPD
Acute Care Hospital outpatient department · Leesburg, Virginia
Find Dr. Dar's professional email, personal email and mobile number
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Dr. Ajay Dar is a medical oncologist in Leesburg, Virginia
Dr. Dar practices at Inova Loudoun Ambulatory Surgery Center - HOPD in Leesburg, Virginia.
Dr. Dar's NPI, 1215905286, was assigned on March 8, 2006. Dr. Dar holds Virginia license 0101231668.
- NPI
- 1215905286NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2961392121
- NPI enumeration date
- March 8, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ajay Dar practices at Inova Loudoun Ambulatory Surgery Center - HOPD in Leesburg, Virginia
Dr. Dar's primary practice is Inova Loudoun Ambulatory Surgery Center - HOPD, at 44035 Riverside Pkwy, Leesburg, VA 20176.
- Inova Loudoun Ambulatory Surgery Center - HOPD44035 Riverside Pkwy, Leesburg, VA 20176
Source: Dmand AI Affiliation Data
Dr. Ajay Dar is affiliated with 6 sites of care and 1 medical group
Dr. Dar's primary practice is Inova Loudoun Ambulatory Surgery Center - HOPD in Leesburg, Virginia. Dr. Dar is also affiliated with Inova Loudoun Hospital. The medical group on file is Virginia Cancer Specialists. Dmand AI also links Dr. Dar to 2 more hospitals, 1 group practice or clinic and 1 ambulatory surgery center, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Ajay Dar's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Dar practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Inova Loudoun Ambulatory Surgery Center - HOPD | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ajay Dar is one of 99 medical oncologists in Virginia
Medical oncology is Dr. Dar's primary specialty in the NPI Registry, under taxonomy code 207RX0202X. Dr. Dar is licensed in Virginia.
Specialties and state licenses
- Medical oncology, VirginiaPrimary
Medical oncologists near Dr. Dar
Counts of medical oncologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Ajay Dar billed Medicare for 54,013 services in 2024
CMS data shows 54,013 Medicare services from Dr. Dar across 74 procedure codes in 2024, for 642 Medicare patients. Medicare paid $1,212,495 for them.
Dr. Dar's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 83,0252024: 44,68846%
- Lab and pathology
- 2023: 5,2782024: 4,8578%
- Tests and treatments
- 2023: 1,8572024: 1,44222%
- Surgery
- 2023: 1,5302024: 1,36311%
- Office and hospital visits
- 2023: 1,5412024: 1,23920%
- Other services
- 2023: 992024: 424328%
Where Dr. Dar's Medicare services took place, 2024
- In an office53,781100%
- In a facility2320%
Dr. Dar compared with the Virginia median for medical oncologists, 2024
- Dr. Dar
- Virginia median
- Medicare services
- 54,013vs 56695.4 times
- Medicare patients
- 642vs 2222.9 times
- Part D claims
- 621vs 3032.0 times
Medians across 96 medical oncologists in Virginia with Dmand AI profiles that report each measure.
Dr. Dar's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ajay Dar treated 642 Medicare patients in 2024, average age 77
CMS counts 642 Medicare patients who saw Dr. Dar in 2024. The largest group is 75 to 84, with 268 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 8% are also on Medicaid. Their average risk score is 1.97, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Dar's median patient age at 67, with 57% women.
Dr. Dar's Medicare patients by age, 2024
Dr. Dar's Medicare patients by sex, 2024
- Women36857%
- Men27443%
Chronic conditions among Dr. Dar's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis55%
- Cancer52%
- Diabetes31%
- Ischemic heart disease31%
- Chronic kidney disease30%
- Anxiety25%
Share of Medicare patients with each condition. A patient can have several.
Dr. Dar's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women57%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ajay Dar wrote 846 Medicare Part D claims in 2024
In 2024, Dr. Dar wrote 846 Medicare Part D claims for 167 patients. 76% of them were for generic drugs. CMS names the drug for 621 of them, across 21 drugs with 11 or more claims each, at $1,628,997 in total drug cost. In 2023, CMS named 542 claims across 21 drugs.
Dr. Dar's Part D claims by kind of drug, 2024
- Generic642 claims76%
- Brand-name204 claims24%
Dr. Dar's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Dar's Part D claims, 2024
- Opioids1%12 of 846 claims
- Antibiotics2%13 of 846 claims
- Antipsychotics, patients 65 and over2%21 of 846 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 5422024: 62115%
Drugs named by CMS: 21 in 2024, 21 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Ajay Dar offers telehealth to Medicare patients
Dr. Dar accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Dar as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Ajay Dar received $4,775 in industry payments from 2016 to 2025
CMS Open Payments shows 213 general payments to Dr. Dar from 47 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 95% of the total. Janssen Pharmaceuticals, Inc paid the most, $681.
General payments to Dr. Dar by program year, 2016 to 2025
General payments to Dr. Dar by kind, 2016 to 2025
- Food and beverage$4,54795%
- Education$2285%
Companies that paid Dr. Dar the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Ajay Dar's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Ajay Dar
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Ajay Dar's NPI number?
Dr. Ajay Dar's NPI number is 1215905286. It was assigned on March 8, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ajay Dar?
Dr. Ajay Dar is a medical oncologist in Leesburg, Virginia. The primary specialty in the NPI Registry is Medical Oncology Physician (taxonomy code 207RX0202X).
Where does Dr. Ajay Dar practice?
Dr. Dar practices at 44035 Riverside Pkwy, Leesburg, VA 20176. Dr. Dar's primary practice is Inova Loudoun Ambulatory Surgery Center - HOPD in Leesburg, Virginia. Dmand AI also links Dr. Dar to 2 hospitals, 1 group practice or clinic and 1 ambulatory surgery center.
What is Dr. Ajay Dar's medical license number?
Dr. Dar holds Virginia license 0101231668.
Which hospitals is Dr. Ajay Dar affiliated with?
Dr. Dar is affiliated with Inova Loudoun Hospital. Dmand AI links Dr. Dar to 2 more hospitals.
What medical group is Dr. Ajay Dar part of?
Dr. Dar is linked to Virginia Cancer Specialists.
Does Dr. Ajay Dar accept Medicare?
Yes. CMS data shows Dr. Dar billed Medicare for 54,013 services in 2024, and Dr. Dar accepts Medicare assignment.
Does Dr. Ajay Dar offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Dar as offering telehealth services.
How many Medicare patients does Dr. Ajay Dar see?
CMS counts 642 Medicare patients who saw Dr. Dar in 2024, with an average age of 77.
What services does Dr. Ajay Dar bill to Medicare?
In 2024, Dr. Dar's most billed Medicare services were injected or infused drug (J1439), injected or infused drug (J9144) and injected or infused drug (J9271).
Show 3 more questionsShow fewer questions
What drugs does Dr. Ajay Dar prescribe most?
In 2024 Medicare Part D data, Dr. Dar's most prescribed drugs by claims were Anastrozole, Eliquis and Letrozole.
Has Dr. Ajay Dar received payments from drug or device companies?
CMS Open Payments shows $4,775 in general payments to Dr. Dar from 47 companies from 2016 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Ajay Dar been practicing?
Dr. Dar graduated from medical school in 1984, 42 years ago.
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