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STEPHEN VAN DORN STONE MD
NPI 1780188383
Internal Medicine - Infectious Disease in Lorton, VA

Active since March 20, 2018PECOS EnrolledAccepts Medicare Assignment
9455 LORTON STATION BLVD., 202, LORTON, VA 22079(703) 339-8541(703) 339-9157 Get Directions Write a Review

NPPES record last updated: September 25, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 25, 2024, Mar 20, 2018 (2 updates tracked since 2018).

About Stephen Van Dorn Stone Md NPPES

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

STEPHEN VAN DORN STONE MD (NPI 1780188383) is an individual infectious disease provider in Lorton, Virginia, licensed in Virginia (0101282312) and active in the NPI registry since March 2018. He is enrolled in Medicare PECOS, is affiliated with Sentara Northern Virginia Medical Center, and is a graduate of University Of Mississippi School Of Medicine (2018).

NPPES Registry Identity

NPI1780188383
Entity TypeIndividualMale
Primary Taxonomy207RI0200X
Provider Legal NameSTEPHEN VAN DORN STONECredential: MD
Location Address9455 LORTON STATION BLVD., 202Lorton, VA 22079
Mailing Address9455 Lorton Station Blvd., 202Lorton, VA 22079 · (703) 339-8541 · Fax (703) 339-9157
Phone(703) 339-8541
Fax(703) 339-9157
Sole ProprietorNo
Medical School CMSUniversity Of Mississippi School Of MedicineGraduated 2018
Enumeration DateMarch 20, 2018
Last NPPES UpdateSeptember 25, 20242 updates tracked since enumeration
NPPES CertifiedSeptember 19, 2024
✔ NPI 1780188383 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
License✔ Licensed in VA · 0101282312
Definition
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.
9455 LORTON STATION BLVD., Lorton, VA 22079
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Stephen Van Dorn Stone 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 ID7315296738
PECOS Enrollment IDI20240813001142
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 Reassignment

Medicare enrollment records show Stephen Stone reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Infectious Diseases Associates PC
0.1 mi
Infectious Disease
8988 LORTON STATION BLVD, #204
Lorton, VA 22079
  • Reassigned Medicare billing, District of Columbia and Virginia enrollments
  • 5 clinicians in this Medicare group
NPI 1013028794 (703) 339-3524

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 4

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.

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.
197 services77 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
75 services71 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
31 services19 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
21 services21 patients

Hospital Affiliations CMS Care Compare 2

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

Sentara Northern Virginia Medical Center

Acute Care Hospitals · Woodbridge, VA
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number490113
Location2300 Opitz BoulevardWoodbridge, VA 22191 · Prince William County
Emergency services Birthing friendly

Inova Mount Vernon Hospital

Acute Care Hospitals · Alexandria, VA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number490122
Location2501 Parkers LaneAlexandria, VA 22306 · Fairfax County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 22079 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
$147.85 typical visit price
range $65.18 – $194.86
Typical copayment $36.96 (range $16.29 – $48.71)
Most-billed visit code 99204
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.

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 Stephen Stone's NPI number?

The NPI number for Stephen Stone is 1780188383. It was assigned to this individual provider in the NPPES registry on March 20, 2018.

Where is Stephen Stone located?

Stephen Stone practices at 9455 Lorton Station Blvd. 202, Lorton, VA 22079. The listed phone number is (703) 339-8541.

What is Stephen Stone's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is Stephen Stone enrolled in Medicare?

Yes. Stephen Stone 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.

Which organization bills Medicare for Stephen Stone's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Stephen Stone reassigns Medicare benefits to Infectious Diseases Associates PC (Lorton, VA). The 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 Stephen Stone's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Stephen Stone affiliated with any hospitals?

According to CMS data, Stephen Stone is affiliated with Sentara Northern Virginia Medical Center and Inova Mount Vernon Hospital.

When was this NPI record last updated?

The NPPES record for Stephen Stone was last updated on September 25, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.