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FRANCES ANAGNOST WILLIAMS MD
NPI 1003894270
Internal Medicine - Addiction Medicine in Nassawadox, VA

Active since January 06, 2006PECOS EnrolledAccepts Medicare Assignment
10243 ROGERS RD, NASSAWADOX, VA 23413(757) 571-9750(757) 241-5990 Get Directions Write a Review

NPPES record last updated: December 13, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Dec 13, 2024, Nov 7, 2024, Nov 16, 2023 and 3 more (6 updates tracked since 2020).

About Frances Anagnost Williams Md NPPES

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

FRANCES ANAGNOST WILLIAMS MD (NPI 1003894270) is an individual addiction medicine provider in Nassawadox, Virginia, licensed in Virginia (0101231706) and active in the NPI registry since January 2006. She is enrolled in Medicare PECOS, is affiliated with Riverside Shore Memorial Hospital, and is a graduate of University Of Colorado School Of Medicine, Denver (1990).

NPPES Registry Identity

NPI1003894270
Entity TypeIndividualFemale
Primary Taxonomy207RA0401X
Provider Legal NameFRANCES ANAGNOST WILLIAMSCredential: MD
Location Address10243 ROGERS RDNassawadox, VA 23413-1016
Mailing AddressPo Box 137Nassawadox, VA 23413-0137 · (757) 678-6750
Phone(757) 571-9750
Fax(757) 241-5990
Sole ProprietorYes
Medical School CMSUniversity Of Colorado School Of Medicine, DenverGraduated 1990
Enumeration DateJanuary 6, 2006
Last NPPES UpdateDecember 13, 20246 updates tracked since enumeration
NPPES CertifiedDecember 13, 2024
✔ NPI 1003894270 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Addiction MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RA0401X
License✔ Licensed in VA · 0101231706
Definition
An internist doctor of osteopathy that specializes in the treatment of addiction disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine can obtain a Certificate of Added Qualifications in the field of Addiction Medicine.
Also ListedFamily MedicineTaxonomy 207Q00000X · License 0101231706 (VA)
10243 ROGERS RD, Nassawadox, VA 23413
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.Insurance ›

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

Frances Anagnost Williams 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 ID9537061387
PECOS Enrollment IDI20040122001078
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

2

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

Alithia Health PLLC
Same address
Addiction Medicine
10243 ROGERS DRIVE
Nassawadox, VA 23413
  • Reassigned Medicare billing, Virginia enrollment
  • 3 clinicians in this Medicare group
NPI 1235817800 (757) 571-9750
Riverside Physician Services Inc
38 mi
Internal Medicine
7547 MEDICAL DRIVE, SUITE 2200
Gloucester, VA 23061
  • Reassigned Medicare billing, Virginia enrollment
  • 1,097 clinicians in this Medicare group
NPI 1790863645 (804) 693-2720

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 7

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.
155 services88 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.
59 services47 patients
Hemoglobin a1c level 83036
Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.
50 services38 patients
Blood glucose (sugar) level 82947
A blood glucose level test measures the amount of sugar in your blood. It's often used to monitor and manage conditions like diabetes. High or low levels can indicate a health issue. The test is usually done by pricking your finger for a small blood sample.
45 services31 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.
41 services33 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.
16 services16 patients

Hospital Affiliations CMS Care Compare

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

Riverside Shore Memorial Hospital

Acute Care Hospitals · Onancock, VA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number490037
Location20480 Market StreetOnancock, VA 23417 · Accomack County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 23413 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

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

DR. ROBERT E HOUSTON MD
Family Medicine (Addiction Medicine)
10243 ROGERS RD
NASSAWADOX, VA 23413
Northampton County (757) 753-1632

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 Frances Williams's NPI number?

The NPI number for Frances Williams is 1003894270. It was assigned to this individual provider in the NPPES registry on January 6, 2006.

Where is Frances Williams located?

Frances Williams practices at 10243 Rogers Rd, Nassawadox, VA 23413. The listed phone number is (757) 571-9750.

What is Frances Williams's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Addiction Medicine, with taxonomy code 207RA0401X.

Is Frances Williams enrolled in Medicare?

Yes. Frances Williams 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 organizations bill Medicare for Frances Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Frances Williams reassigns Medicare benefits to 2 organizations: Alithia Health PLLC (Nassawadox, VA) and Riverside Physician Services Inc (Gloucester, 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 Frances Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Frances Williams accept?

Health plans from Oscar Health list Frances Williams as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Frances Williams affiliated with any hospitals?

According to CMS data, Frances Williams is affiliated with Riverside Shore Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Frances Williams was last updated on December 13, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 months 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.