STEPHEN W REX MD
NPI 1861495871
Family Medicine in Alexandria, VA

Active since May 23, 2005PECOS EnrolledAccepts Medicare AssignmentCLIA 49D2065298 · Waiver
94.02/100
CMS Quality Rating
8101 HINSON FARM RD, STE 415, ALEXANDRIA, VA 22306(703) 799-9695(703) 310-4314 Get Directions Write a Review

NPPES record last updated: October 12, 2015. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Stephen W Rex Md NPPES

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

STEPHEN W REX MD (NPI 1861495871) is an individual family medicine provider in Alexandria, Virginia, licensed in Virginia (0101051876) and active in the NPI registry since May 2005. He is enrolled in Medicare PECOS, holds a CLIA Waiver certificate valid through September 5, 2027, and is affiliated with Inova Alexandria Hospital.

NPPES Registry Identity

NPI1861495871
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameSTEPHEN W REXCredential: MD
Location Address8101 HINSON FARM RD, STE 415Alexandria, VA 22306-3410
Mailing Address8101 Hinson Farm Rd, Ste 415Alexandria, VA 22306-3410 · (703) 799-9695 · Fax (703) 310-4314
Fax(703) 310-4314
Sole ProprietorNo
Medical School CMSOhio State University College Of MedicineGraduated 1990
Enumeration DateMay 23, 2005
Last NPPES UpdateOctober 12, 2015
NPI 1861495871 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License Licensed in VA · 0101051876
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
8101 HINSON FARM RD, Alexandria, VA 22306

Other Identifiers 8

OtherCJ2302Medicare Railroad
Other505645VA · Ncppo
Other289060VA · Mdipa Op Choice Mamsi
Other286376VA · Anthem Bcbs
Medicare ID-Type Unspecified00A479M43VA
Other080174443VA · Railroad Medicare
Other81660002VA · Carefirst Bcbs
Medicare UPING00401VA

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

Stephen W Rex 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 ID5294761086
PECOS Enrollment IDI20110120000141
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.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 49D2065298

Stephen W Rex, MD, PLLC · Alexandria, VA
Active · expires Sep 5, 2027
CLIA Number49D2065298
Laboratory TypePhysician Office
Certificate Effective DateSeptember 6, 2025
Certificate Expiration DateSeptember 5, 2027
Laboratory DirectorStephen W. Rex
Laboratory Phone(703) 799-9695
Laboratory LocationStephen W Rex, MD, PLLC8101 Hinson Farm Road - Suite 415, Alexandria, VA 22306
CLIA data matches this NPI record on: Address Phone
This certificate is issued to a laboratory to perform only waived tests.

Areas of Expertise CMS Part B claims 14

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
372 services177 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
368 services155 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.
335 services157 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
156 services156 patients
Telephone medical discussion with physician, 11-20 minutes 99442
This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.
78 services54 patients
Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional 99211
This service involves an outpatient visit for established patients who may not need direct interaction with a healthcare professional. It could include reviewing test results, monitoring existing conditions, or adjusting treatment plans. It's typically done remotely, ensuring your comfort and convenience.
55 services28 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

Virginia Hospital Center

Acute Care Hospitals · Arlington, VA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number490050
Location1701 North George Mason DriveArlington, VA 22205 · Arlington 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 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 22306 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
$100.31 typical visit price
range $65.18 – $194.86
Typical copayment $25.07 (range $16.29 – $48.71)
Most-billed visit code 99203
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.

94.02/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored
Quality100
Promoting Interoperability100
Improvement Activities40
Cost80.07

Reported Quality Measures

Advance Care Plan
82%300 patients4/55-star benchmark: 100%
Breast Cancer Screening
79%100 patients4/55-star benchmark: 93%
Closing the Referral Loop: Receipt of Specialist Report
54%68 patients3/55-star benchmark: 87%
Colorectal Cancer Screening
88%240 patients5/55-star benchmark: 88%
Controlling High Blood Pressure
68%109 patients4/55-star benchmark: 91%
Diabetes: Eye Exam
0%40 patients1/55-star benchmark: 100%
Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%)
Lower rates are better for this measure.
20%40 patients4/55-star benchmark: 91%
Documentation of Current Medications in the Medical Record
89%1,045 patients4/55-star benchmark: 100%
e-Prescribing
97%241 patients4/55-star benchmark: 100%
Falls: Screening for Future Fall Risk
63%305 patients3/55-star benchmark: 100%
Preventive Care and Screening: Screening for High Blood Pressure and Follow-Up Documented
22%510 patients2/55-star benchmark: 61%
Provide Patients Electronic Access to Their Health Information
87%286 patients4/55-star benchmark: 100%
Statin Therapy for the Prevention and Treatment of Cardiovascular Disease
75%232 patients3/55-star benchmark: 91%
Use of High-Risk Medications in Older Adults
Lower rates are better for this measure.
Patients appropriateDiagnosis: 2% · 305 patients
Patients totalRate: 18% · 323 patients
18%323 patients3/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 4

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

Respiratory assist device, bi-level pressure capability, without backup rate feature, used with noninvasive interface, e.g., nasal or facial mask (intermittent assist device with continuous positive airway pressure device) E0470
DME-Other DME · category DE001N
1 supplier12 claims12 services$66.15 avg. paid by Medicare
Humidifier, heated, used with positive airway pressure device E0562
DME-Other DME · category DE001N
2 suppliers15 claims15 services$11.62 avg. paid by Medicare
Standard wheelchair K0001
DME-Wheelchairs · category DD000N
1 supplier13 claims13 services$15.13 avg. paid by Medicare
Elevating leg rests, pair (for use with capped rental wheelchair base) K0195
DME-Wheelchairs · category DD021N
1 supplier12 claims12 services$7.33 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 20

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

Behavior Analyst
8101 HINSON FARM RD
ALEXANDRIA, VA 22306
Plastic Surgery
8101 HINSON FARM RD, #217
ALEXANDRIA, VA 22306
Podiatrist (Foot & Ankle Surgery)
8101 HINSON FARM RD, SUITE 301
ALEXANDRIA, VA 22306
Physical Therapist
8101 HINSON FARM RD, SUITE 312
ALEXANDRIA, VA 22306
Internal Medicine (Cardiovascular Disease)
8101 HINSON FARM RD, #408
ALEXANDRIA, VA 22306
Ophthalmology
8101 HINSON FARM RD, SUITE 103
ALEXANDRIA, VA 22306
Behavior Technician
8101 HINSON FARM RD
ALEXANDRIA, VA 22306
Neurological Surgery
8101 HINSON FARM RD, SUITE 112
ALEXANDRIA, VA 22306

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 Rex's NPI number?

The NPI number for Stephen Rex is 1861495871. It was assigned to this individual provider in the NPPES registry on May 23, 2005.

Where is Stephen Rex located?

Stephen Rex practices at 8101 Hinson Farm Rd Ste 415, Alexandria, VA 22306. The listed phone number is (703) 799-9695.

What is Stephen Rex's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Stephen Rex enrolled in Medicare?

Yes. Stephen Rex 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.

Does Stephen Rex hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 49D2065298) is associated with this NPI, valid through September 5, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

Is Stephen Rex affiliated with any hospitals?

According to CMS data, Stephen Rex is affiliated with Inova Alexandria Hospital, Virginia Hospital Center, Inova Fairfax Hospital and Inova Mount Vernon Hospital.

When was this NPI record last updated?

The NPPES record for Stephen Rex was last updated on October 12, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.