Individual provider Active NPI

Sara C Williams, M.D.

  • Internal Medicine Physician
  • Fairfax, VA
National Provider Identifier
1730509720
Registry record updated Jul 20, 2022
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
0101262493 Issued in VA
Practice address
3580 Joseph Siewick Dr Ste 306
Fairfax, VA 22033-1764
Phone
(703) 391-4520
Fax
(703) 391-4521
NPI assigned
Apr 17, 2014
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 20, 2022

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 0101262493 VA Primary

Addresses

Primary practice location

3580 Joseph Siewick Dr Ste 306
Fairfax, VA 22033-1764

Mailing address

PO Box 37174
Baltimore, MD 21297-3174
Phone (571) 423-5699

Other practice location 1

131 Coventry St
Hartford, CT 06112-1548
Phone (860) 714-2813

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in DC, VA, HI3 enrollments
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 3

Enrollment IDStateProvider typePAC IDDetails
I20170714002347 DC Practitioner - Internal MedicinePractitioner - HospitalistPractitioner - Emergency Medicine 4688977382 Reassigns benefits to 2 organizations
I20200806003676 VA Practitioner - Internal Medicine 4688977382 Reassigns benefits to 1 organization
I20251107002652 HI Practitioner - Hospitalist 4688977382 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Hospitalist
Education
Other, 2014
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Hawaii Permanente Medical Group IncGroup PAC ID 7618880667, 705 clinicians
Fair Oaks Hospitalist Physicians, PLLCGroup PAC ID 1052419868, 63 clinicians

Practice addresses (Care Compare)

3288 Moanalua Rd
Honolulu, HI 96819-1469
Phone (808) 432-0000

3600 Joseph Siewick Dr
Fairfax, VA 22033-1709
Phone (703) 391-3558

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
92.99 of 100Reported as group
Quality
91.31
Improvement activities
40
Cost
79.05

Merit-based Incentive Payment System (MIPS)

Final score
83.36 of 100Reported as group
Quality
73.03
Promoting interoperability
100
Improvement activities
40
Cost
71.49

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

Practice roles

OrganizationSpecialtyStatusNew patients
Inova Health Care Services CurrentSince Jun 13, 2022 Accepting new patients
Inova Health Care Services Internal Medicine CurrentSince Mar 1, 2020 Accepting new patients
Inova Health Care Services CurrentSince Mar 1, 2020 Accepting new patients
Fair Oaks Hospitalist Physicians, PLLC CurrentSince Jul 1, 2017 Accepting new patients
Hawaii Permanente Medical Group Inc CurrentSince Oct 6, 2025 Accepting new patients
Kaiser Foundation Hospitals Past Accepting new patients

Locations

3288 Moanalua Rd
Honolulu, HI 96819
Phone (808) 265-9205

711 Kapiolani Blvd
Honolulu, HI 96813
Phone (808) 432-5312

3600 Joseph Siewick Dr
Fairfax, VA 22033
Phone (703) 391-3037

3580 Joseph Siewick Dr
Ste 306
Fairfax, VA 22033
Phone (703) 391-4520

3300 Gallows Rd
Falls Church, VA 22042
Phone (703) 352-9395

3300 Gallows Rd
Fl 1
Falls Church, VA 22042
Phone (703) 776-4005

224B Cornwall St NW
Leesburg, VA 20176
Phone (703) 771-2894

19500 Sandridge Way
Ste 200
Leesburg, VA 20176
Phone (703) 840-7300

Organizations & group practices 6

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

Hospital & facility affiliations 2

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1397692800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1658275200000",
    "number": "1730509720",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 37174",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212973174",
            "telephone_number": "571-423-5699",
            "fax_number": "571-423-5698"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3580 JOSEPH SIEWICK DR STE 306",
            "city": "FAIRFAX",
            "state": "VA",
            "postal_code": "220331764",
            "telephone_number": "703-391-4520",
            "fax_number": "703-391-4521"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "131 Coventry St",
            "address_purpose": "LOCATION",
            "city": "Hartford",
            "state": "CT",
            "postal_code": "061121548",
            "country_code": "US",
            "telephone_number": "860-714-2813",
            "fax_number": "860-714-8541",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WILLIAMS",
        "first_name": "SARA",
        "middle_name": "C",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2014-04-17",
        "last_updated": "2022-07-20",
        "certification_date": "2022-07-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "VA",
            "license": "0101262493",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Fairfax, VA

Sources for this page

Verify at the official NPI Registry.