MS. GRACE L. KEENAN M.D., CEO
NPI 1770518821
Internal Medicine in Ashburn, VA

Q: What is Grace Keenan's NPI number?

The NPI number for Grace Keenan is 1770518821. It was assigned to this individual provider in the NPPES registry on July 11, 2006.

Q: What is Grace Keenan's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Grace Keenan was last updated on February 23, 2016. 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.

Active since July 11, 2006PECOS Enrolled

21785 FILIGREE CT, SUITE 100, ASHBURN, VA 20147(703) 554-1100(703) 554-1110 Get Directions Write a Review

NPPES record last updated: February 23, 2016. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Ms. Grace L. Keenan M.d., Ceo NPPES

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

MS. GRACE L. KEENAN M.D., CEO (NPI 1770518821) is an individual internal medicine provider in Ashburn, Virginia, licensed in Virginia (0101041478) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1770518821

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameMS. GRACE L. KEENANCredential: M.D., CEO

Location Address21785 FILIGREE CT, SUITE 100Ashburn, VA 20147-6213

Mailing Address21785 Filigree Ct, Suite 100Ashburn, VA 20147-6213 · (703) 554-1100 · Fax (703) 554-1110

Phone(703) 554-1100

Fax(703) 554-1110

Sole ProprietorNo

Enumeration DateJuly 11, 2006

Last NPPES UpdateFebruary 23, 2016

✔ NPI 1770518821 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in VA · 0101041478

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

21785 FILIGREE CT, Ashburn, VA 20147

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Other Identifiers 3

Medicare UPINB10317

Medicare PIN00W411N08

Medicaid1770518821VA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ms. Grace L. Keenan M.d., Ceo is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignments

Medicare enrollment records show Grace Keenan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Inova Physician Partners, LLC

8.2 mi

Family Medicine

3914 CENTREVILLE RD, SUITE 250
Chantilly, VA 20151

Reassigned Medicare billing, District of Columbia and Virginia enrollments
379 clinicians in this Medicare group

NPI 1215264916 (703) 321-2609

Inova Health Care Services

13 mi

Urgent Care

100 MAPLE AVE E
Vienna, VA 22180

Reassigned Medicare billing, District of Columbia and Virginia enrollments
160 clinicians in this Medicare group

NPI 1275886418 (703) 938-5300

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20147 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

$129.04 typical visit price

range $56.19 – $170.30

Typical copayment $32.26 (range $14.04 – $42.57)

Most-billed visit code 99204

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.

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.

DR. AFZAL UNISSA RASHEED MD

Family Medicine

21785 FILIGREE CT, SUITE 100
ASHBURN, VA 20147

Loudoun County (703) 554-1100

DANIELLE M. AUGUSTINO PA-C

Physician Assistant

21785 FILIGREE CT
ASHBURN, VA 20147

Loudoun County (703) 554-1130

JENNIFER KUGLER D.O.

Family Medicine

21785 FILIGREE CT, SUITE 100
ASHBURN, VA 20147

Loudoun County (703) 554-1120

ASHBURN STERLING DOCTORS

Clinic/Center (Primary Care)

21785 FILIGREE CT, SUITE 215
ASHBURN, VA 20147

Loudoun County (571) 223-5610

CARLEIGH ALEXANDRA KESSLER NP-C

Nurse Practitioner (Family)

21785 FILIGREE CT
ASHBURN, VA 20147

Loudoun County (703) 554-1100

INOVA HEALTH SYSTEM SERVICES

Clinic/Center (Urgent Care)

21785 FILIGREE CT, SUITE 100
ASHBURN, VA 20147

Loudoun County (703) 554-1111

CAROL ELIZABETH MATTES MD

Family Medicine

21785 FILIGREE CT
ASHBURN, VA 20147

Loudoun County (703) 554-1100

AMISH M. GANDHI MD

Internal Medicine (Endocrinology, Diabetes & Metabolism)

21785 FILIGREE CT, SUITE 203
ASHBURN, VA 20147

Loudoun County (703) 554-1100

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 Keenan's NPI number?

The NPI number for Grace Keenan is 1770518821. It was assigned to this individual provider in the NPPES registry on July 11, 2006.

Where is Grace Keenan located?

Grace Keenan practices at 21785 Filigree Ct Suite 100, Ashburn, VA 20147. The listed phone number is (703) 554-1100.

What is Grace Keenan's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Grace Keenan enrolled in Medicare?

Yes. Grace Keenan is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Grace Keenan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Grace Keenan reassigns Medicare benefits to 2 organizations: Inova Physician Partners, LLC (Chantilly, VA) and Inova Health Care Services (Vienna, VA). Each 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 Grace Keenan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Grace Keenan was last updated on February 23, 2016. 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.