Dr. Gregory J. Orloff, MD
- Medicare services, 2024
- 45,614
- Medicare patients, 2024
- 944
- Part D claims, 2024
- 535
- Hospital affiliations
- 2
- Industry payments
- $8,400
- Practice address
- 3300 Gallows Rd, Falls Church, VA 22046
- Practice phone
- Call (703) 698-3659
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Inova Fairfax Hospital - Unit
Acute Care Hospital-Unit · Falls Church, Virginia
Find Dr. Orloff's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Gregory J. Orloff is a hematologist and oncologist in Falls Church, Virginia
Dr. Orloff practices at Inova Fairfax Hospital - Unit in Falls Church, Virginia.
Dr. Orloff's NPI, 1750358776, was assigned on March 8, 2006. Dr. Orloff graduated from Yale University School of Medicine in 1986. Dr. Orloff holds Virginia license 0101052477.
- NPI
- 1750358776NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3779624085
- NPI enumeration date
- March 8, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (703) 698-3659
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 66
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory J. Orloff practices at Inova Fairfax Hospital - Unit in Falls Church, Virginia
Dr. Orloff's primary practice is Inova Fairfax Hospital - Unit, at 3300 Gallows Rd, Falls Church, VA 22046 in Falls Church City. The practice phone is (703) 698-3659.
- Inova Fairfax Hospital - Unit3300 Gallows Rd, Falls Church, VA 22046 · Falls Church CityPhone(703) 698-3659
Source: Dmand AI Affiliation Data
Dr. Gregory J. Orloff is affiliated with 3 sites of care and 1 medical group
Dr. Orloff's primary practice is Inova Fairfax Hospital - Unit in Falls Church, Virginia. Dr. Orloff is also affiliated with Inova Fairfax Hospital. The medical group on file is Virginia Cancer Specialists. Dmand AI also links Dr. Orloff to 1 more group practice or clinic, named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Gregory J. Orloff's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Orloff practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Inova Fairfax Hospital - Unit | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory J. Orloff is one of 297 hematologists and oncologists in Virginia
Hematology and oncology is Dr. Orloff's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Orloff is licensed in Virginia.
Specialties and state licenses
- Hematology and oncology, VirginiaPrimary
Hematologists and oncologists near Dr. Orloff
Counts of hematologists and 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. Gregory J. Orloff billed Medicare for 45,614 services in 2024
CMS data shows 45,614 Medicare services from Dr. Orloff across 60 procedure codes in 2024, for 944 Medicare patients. Medicare paid $806,676 for them.
Dr. Orloff's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 42,3472024: 35,06917%
- Lab and pathology
- 2023: 7,1082024: 7,7068%
- Office and hospital visits
- 2023: 1,3722024: 1,08621%
- Tests and treatments
- 2023: 1,1932024: 1,04013%
- Surgery
- 2023: 4032024: 44410%
- Other services
- 2023: 1,5942024: 26983%
Where Dr. Orloff's Medicare services took place, 2024
- In an office45,412100%
- In a facility2020%
Dr. Orloff compared with the Virginia median for hematologists and oncologists, 2024
- Dr. Orloff
- Virginia median
- Medicare services
- 45,614vs 3,51413.0 times
- Medicare patients
- 944vs 47499% above
- Part D claims
- 426vs 4526% below
Medians across 275 hematologists and oncologists in Virginia with Dmand AI profiles that report each measure.
Dr. Orloff'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.
Need commercial claims for Dr. Orloff?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Orloff and other hematologists and oncologists in Virginia.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory J. Orloff treated 944 Medicare patients in 2024, average age 76
CMS counts 944 Medicare patients who saw Dr. Orloff in 2024. The largest group is 75 to 84, with 406 patients. 75% of them have high cholesterol, and 73% have high blood pressure. 6% are also on Medicaid. Their average risk score is 2.08, 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. Orloff's median patient age at 70, with 42% women.
Dr. Orloff's Medicare patients by age, 2024
Dr. Orloff's Medicare patients by sex, 2024
- Women50654%
- Men43846%
Chronic conditions among Dr. Orloff's Medicare patients, 2024
- High cholesterol75%
- High blood pressure73%
- Arthritis46%
- Cancer43%
- Ischemic heart disease32%
- Chronic kidney disease29%
- Diabetes27%
- Atrial fibrillation24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Orloff's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women42%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gregory J. Orloff wrote 535 Medicare Part D claims in 2024
In 2024, Dr. Orloff wrote 535 Medicare Part D claims for 84 patients. 61% of them were for generic drugs. CMS names the drug for 426 of them, across 13 drugs with 11 or more claims each, at $2,873,549 in total drug cost. In 2023, CMS named 291 claims across 8 drugs.
Dr. Orloff's Part D claims by kind of drug, 2024
- Generic329 claims61%
- Brand-name206 claims39%
Dr. Orloff'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2912024: 42646%
Drugs named by CMS: 13 in 2024, 8 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
How Dr. Gregory J. Orloff takes part in Medicare
Dr. Orloff accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Gregory J. Orloff received $8,400 in industry payments from 2016 to 2025
CMS Open Payments shows 95 general payments to Dr. Orloff from 29 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 76% of the total. Sanofi and Genzyme US Companies paid the most, $6,429.
General payments to Dr. Orloff by program year, 2016 to 2025
General payments to Dr. Orloff by kind, 2016 to 2025
- Speaker and faculty fees$6,40076%
- Food and beverage$1,78221%
- Education$2193%
Companies that paid Dr. Orloff the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gregory J. Orloff graduated from Yale University School of Medicine
Dr. Orloff graduated from Yale University School of Medicine in 1986.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gregory J. Orloff'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) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Gregory J. Orloff
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. Gregory J. Orloff's NPI number?
Dr. Gregory J. Orloff's NPI number is 1750358776. It was assigned on March 8, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory J. Orloff?
Dr. Gregory J. Orloff is a hematologist and oncologist in Falls Church, Virginia. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Gregory J. Orloff practice?
Dr. Orloff practices at 3300 Gallows Rd, Falls Church, VA 22046. Dr. Orloff's primary practice is Inova Fairfax Hospital - Unit in Falls Church, Virginia. Dmand AI also links Dr. Orloff to 1 group practice or clinic.
What is Dr. Gregory J. Orloff's office phone number?
The practice phone on file for Dr. Orloff is (703) 698-3659.
What is Dr. Gregory J. Orloff's medical license number?
Dr. Orloff holds Virginia license 0101052477.
Which hospitals is Dr. Gregory J. Orloff affiliated with?
Dr. Orloff is affiliated with Inova Fairfax Hospital. Dmand AI links Dr. Orloff to 1 more hospital.
What medical group is Dr. Gregory J. Orloff part of?
Dr. Orloff is linked to Virginia Cancer Specialists.
Does Dr. Gregory J. Orloff accept Medicare?
Yes. CMS data shows Dr. Orloff billed Medicare for 45,614 services in 2024, and Dr. Orloff accepts Medicare assignment.
How many Medicare patients does Dr. Gregory J. Orloff see?
CMS counts 944 Medicare patients who saw Dr. Orloff in 2024, with an average age of 76.
What services does Dr. Gregory J. Orloff bill to Medicare?
In 2024, Dr. Orloff's most billed Medicare services were injected or infused drug (J9144), injected or infused drug (J1439) and injected or infused drug (J0881).
Show 4 more questionsShow fewer questions
Where did Dr. Gregory J. Orloff go to medical school?
Dr. Orloff graduated from Yale University School of Medicine in 1986.
What drugs does Dr. Gregory J. Orloff prescribe most?
In 2024 Medicare Part D data, Dr. Orloff's most prescribed drugs by claims were Acyclovir, Lenalidomide and Dexamethasone.
Has Dr. Gregory J. Orloff received payments from drug or device companies?
CMS Open Payments shows $8,400 in general payments to Dr. Orloff from 29 companies from 2016 to 2025. The largest total came from Sanofi and Genzyme US Companies.
How long has Dr. Gregory J. Orloff been practicing?
Dr. Orloff graduated from medical school in 1986, 40 years ago.
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