DR. SAMANTHA LEIGH DIBENEDETTO MD
NPI 1295198695
Internal Medicine - Hematology & Oncology in Fairfax, VA

Active since April 01, 2016PECOS EnrolledAccepts Medicare Assignment
91.96/100
CMS Quality Rating
8613 ROUTE 29 # 200N, FAIRFAX, VA 22031(571) 350-8400(703) 280-9596 Get Directions Write a Review

NPPES record last updated: November 12, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Nov 12, 2025, Nov 3, 2025, Aug 21, 2023 and 5 more (8 updates tracked since 2016).

About Dr. Samantha Leigh Dibenedetto Md NPPES

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

DR. SAMANTHA LEIGH DIBENEDETTO MD (NPI 1295198695) is an individual hematology & oncology provider in Fairfax, Virginia, licensed in Virginia (0101278270) and active in the NPI registry since April 2016. She is enrolled in Medicare PECOS, is affiliated with Inova Alexandria Hospital, and is a graduate of Other (2016).

NPPES Registry Identity

NPI1295198695
Entity TypeIndividualFemale
Primary Taxonomy207RH0003X
Provider Legal NameDR. SAMANTHA LEIGH DIBENEDETTOCredential: MD
Location Address8613 ROUTE 29 # 200NFairfax, VA 22031-2171
Mailing Address3040 Williams Dr Ste 100Fairfax, VA 22031-4618 · (571) 350-8400 · Fax (703) 280-9596
Fax(703) 280-9596
Sole ProprietorNo
Medical School CMSOtherGraduated 2016
Enumeration DateApril 1, 2016
Last NPPES UpdateNovember 12, 20258 updates tracked since enumeration
NPPES CertifiedNovember 12, 2025
NPI 1295198695 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License Licensed in VA · 0101278270
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
Also ListedInternal MedicineTaxonomy 207R00000X · License 0101278270 (VA)
Also ListedInternal Medicine · HematologyTaxonomy 207RH0000X · License 0101278270 (VA)
Also ListedInternal Medicine · Medical OncologyTaxonomy 207RX0202X · License 0101278270 (VA)
8613 ROUTE 29 # 200N, Fairfax, VA 22031

Other Names 1

Former Name (1)Dr. Samantha L Welniak Md

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

Dr. Samantha Leigh Dibenedetto Md 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 ID6507151990
PECOS Enrollment IDI20230822001374, I20250130000400
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 68

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.
18,750 services21 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.
15,480 services39 patients
Injection, darbepoetin alfa, 1 microgram (non-esrd use) J0881
Darbepoetin alfa injection is a medication used to treat anemia (low red blood cell count) often caused by chronic kidney disease or chemotherapy. It works by stimulating your body to produce more red blood cells, helping to increase your energy and well-being.
10,860 services23 patients
Injection, azacitidine, 1 mg J9025
Azacitidine is a medication administered via injection to treat certain types of blood or bone marrow cancer. This drug works by slowing or stopping the growth of cancer cells. It's typically given in a clinic or hospital setting by a healthcare professional.
7,830 services12 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.
3,300 services20 patients
Injection, bortezomib, 0.1 mg J9041
Bortezomib (Velcade) is a medication administered through an injection. It's used to treat multiple myeloma and mantle cell lymphoma, types of cancer. It works by blocking certain proteins in cancer cells, slowing their growth.
1,820 services16 patients

Hospital Affiliations CMS Care Compare 4

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

Inova Alexandria Hospital

Acute Care Hospitals · Alexandria, VA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number490040
Location4320 Seminary RdAlexandria, VA 22304 · Alexandria City 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

Inova Fair Oaks Hospital

Acute Care Hospitals · Fairfax, VA
5/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number490101
Location3600 Joseph Siewick DriveFairfax, VA 22033 · Fairfax County
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 22031 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
$194.86 typical visit price
range $65.18 – $194.86
Typical copayment $48.71 (range $16.29 – $48.71)
Most-billed visit code 99205
Established Patient
$113.72 typical visit price
range $21.40 – $158.88
Typical copayment $28.43 (range $5.35 – $39.72)
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

Other Providers at the Same Location NPPES 11

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

Internal Medicine (Medical Oncology)
8613 ROUTE 29 # 200N
FAIRFAX, VA 22031
Thoracic Surgery (Cardiothoracic Vascular Surgery)
8613 ROUTE 29 # 200N
FAIRFAX, VA 22031
Internal Medicine (Hematology & Oncology)
8613 ROUTE 29 # 200N
FAIRFAX, VA 22031
Nurse Practitioner (Family)
8613 ROUTE 29 # 200N
FAIRFAX, VA 22031
Nurse Practitioner (Family)
8613 ROUTE 29 # 200N
FAIRFAX, VA 22031
Internal Medicine (Hematology & Oncology)
8613 ROUTE 29 # 200N
FAIRFAX, VA 22031
Nurse Practitioner (Family)
8613 ROUTE 29 # 200N
FAIRFAX, VA 22031
Physician Assistant (Medical)
8613 ROUTE 29 # 200N
FAIRFAX, VA 22031

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 Samantha Dibenedetto's NPI number?

The NPI number for Samantha Dibenedetto is 1295198695. It was assigned to this individual provider in the NPPES registry on April 1, 2016. The provider is also known as Dr. Samantha L Welniak MD.

Where is Samantha Dibenedetto located?

Samantha Dibenedetto practices at 8613 Route 29 # 200N, Fairfax, VA 22031. The listed phone number is (571) 350-8400.

What is Samantha Dibenedetto's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Samantha Dibenedetto enrolled in Medicare?

Yes. Samantha Dibenedetto 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 Samantha Dibenedetto affiliated with any hospitals?

According to CMS data, Samantha Dibenedetto is affiliated with Inova Alexandria Hospital, Inova Fairfax Hospital, Inova Fair Oaks Hospital and Reston Hospital Center.

When was this NPI record last updated?

The NPPES record for Samantha Dibenedetto 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 9 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.