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DR. GRACE J. STONEROCK M.D.
NPI 1629234489
Family Medicine in Manassas, VA

Active since July 31, 2008PECOS EnrolledAccepts Medicare AssignmentCLIA 49D0222980 · Microscopy
21.61/100
CMS Quality Rating
10696 CRESTWOOD DR STE B, MANASSAS, VA 20109(703) 368-7110(703) 369-1842 Get Directions Write a Review

NPPES record last updated: July 15, 2023. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Grace J. Stonerock M.d. NPPES

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

DR. GRACE J. STONEROCK M.D. (NPI 1629234489) is an individual family medicine provider in Manassas, Virginia, licensed in Virginia (0101045665) and active in the NPI registry since July 2008. She is enrolled in Medicare PECOS, holds a CLIA Microscopy certificate valid through December 22, 2027, and is affiliated with Fauquier Hospital.

NPPES Registry Identity

NPI1629234489
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameDR. GRACE J. STONEROCKCredential: M.D.
Location Address10696 CRESTWOOD DR STE BManassas, VA 20109-4411
Mailing Address10696 Crestwood Dr Ste BManassas, VA 20109-4411 · (703) 368-7110 · Fax (703) 369-1842
Phone(703) 368-7110
Fax(703) 369-1842
Sole ProprietorNo
Medical School CMSOtherGraduated 1989
Enumeration DateJuly 31, 2008
Last NPPES UpdateJuly 15, 2023
NPPES CertifiedJuly 15, 2023
✔ NPI 1629234489 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 · 0101045665
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.
10696 CRESTWOOD DR STE B, Manassas, VA 20109
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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. Grace J. Stonerock M.d. 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 ID2365512027
PECOS Enrollment IDI20080722000755
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 for Provider-Performed Microscopy Procedures (PPMP) 49D0222980

Grace J Stonerock, MD · Manassas, VA
Active · expires Dec 22, 2027
CLIA Number49D0222980
Laboratory TypePhysician Office
Certificate Effective DateDecember 23, 2025
Certificate Expiration DateDecember 22, 2027
Laboratory DirectorGrace J. Stonerock MD
Laboratory Phone(703) 368-7110
Laboratory LocationGrace J Stonerock, MD10696 B Crestwood Dr, Manassas, VA 20109
CLIA data matches this NPI record on: Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

Areas of Expertise CMS Part B claims 12

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.
642 services234 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.
209 services116 patients
Stool analysis for blood to screen for colon tumors 82270
A stool analysis for blood is a non-invasive procedure used to check for the presence of hidden blood in your stool. This can be an early sign of colon tumors. The test involves collecting a small sample of stool at home and sending it to a lab for analysis.
150 services150 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
92 services92 patients
Influenza vaccine split virus, preservative free 90662
The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.
78 services78 patients
Injection of drug or substance under skin or into muscle 96372
This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.
38 services26 patients

Hospital Affiliations CMS Care Compare 4

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

Fauquier Hospital

Acute Care Hospitals · Warrenton, VA
3/5 CMS rating
OwnershipProprietary
CMS Certification Number490023
Location500 Hospital DriveWarrenton, VA 20186 · Fauquier County
Emergency services Birthing friendly

Novant Prince William Medical Center

Acute Care Hospitals · Manassas, VA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number490045
Location8700 Sudley RdManassas, VA 20110 · Manassas City County
Emergency services Birthing friendly

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

Uva Health Haymarket Medical Center

Acute Care Hospitals · Haymarket, VA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number490144
Location15225 Healthcote BoulevardHaymarket, VA 20169 · Prince William County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20109 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
$86.88 typical visit price
range $56.19 – $170.30
Typical copayment $21.72 (range $14.04 – $42.57)
Most-billed visit code 99203
Established Patient
$99.13 typical visit price
range $18.07 – $138.91
Typical copayment $24.78 (range $4.51 – $34.72)
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.

21.61/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored
Quality0
Improvement Activities0
Cost72.05

Referred Medical Equipment & Supplies CMS DME claims 5

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

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
10 suppliers32 claims88 services$6.83 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
7 suppliers17 claims26 services$1.07 avg. paid by Medicare
Cushion for use on nasal mask interface, replacement only, each A7032
DME-Other DME · category DE001N
2 suppliers11 claims66 services$15.81 avg. paid by Medicare
Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034
DME-Other DME · category DE001N
3 suppliers15 claims15 services$48.16 avg. paid by Medicare
Filter, disposable, used with positive airway pressure device A7038
DME-Other DME · category DE001N
3 suppliers11 claims66 services$1.76 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

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

MRS. MARY JO LAWRENCE FNP
Clinical Nurse Specialist (Family Health)
10696 CRESTWOOD DR STE B
MANASSAS, VA 20109
Prince William County (703) 368-7110

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 Grace Stonerock's NPI number?

The NPI number for Grace Stonerock is 1629234489. It was assigned to this individual provider in the NPPES registry on July 31, 2008.

Where is Grace Stonerock located?

Grace Stonerock practices at 10696 Crestwood Dr Ste B, Manassas, VA 20109. The listed phone number is (703) 368-7110.

What is Grace Stonerock's specialty?

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

Is Grace Stonerock enrolled in Medicare?

Yes. Grace Stonerock 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 Grace Stonerock hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 49D0222980) is associated with this NPI, valid through December 22, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

Is Grace Stonerock affiliated with any hospitals?

According to CMS data, Grace Stonerock is affiliated with Fauquier Hospital, Novant Prince William Medical Center, Sentara Northern Virginia Medical Center and Uva Health Haymarket Medical Center.

When was this NPI record last updated?

The NPPES record for Grace Stonerock was last updated on July 15, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.