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MRS. TAMMY R WILLIAMS FNP- C
NPI 1861179038
Nurse Practitioner - Family in Oxford, OH

Active since June 29, 2023PECOS Enrolled
421 S CAMPUS AVE FL 1, OXFORD, OH 45056(513) 529-3000(513) 529-1892 Get Directions Write a Review

NPPES record last updated: October 30, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Mrs. Tammy R Williams Fnp- C NPPES

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

MRS. TAMMY R WILLIAMS FNP- C (NPI 1861179038) is an individual family provider in Oxford, Ohio, licensed in Ohio (APRNCNP.0033988) and active in the NPI registry since June 2023. She is enrolled in Medicare PECOS and maintains a secondary practice location in West Chester.

NPPES Registry Identity

NPI1861179038
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameMRS. TAMMY R WILLIAMSCredential: FNP- C
Location Address421 S CAMPUS AVE FL 1Oxford, OH 45056-2487
Mailing Address421 S Campus Ave Fl 1Oxford, OH 45056-2487 · (513) 529-3000 · Fax (513) 529-1892
Phone(513) 529-3000
Fax(513) 529-1892
Sole ProprietorYes
Enumeration DateJune 29, 2023
Last NPPES UpdateOctober 30, 2023
NPPES CertifiedJuly 14, 2023
✔ NPI 1861179038 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in OH · APRNCNP.0033988
421 S CAMPUS AVE FL 1, Oxford, OH 45056
Open in Google Maps ↗

Secondary Practice Location 1

Location 18000 Princeton Glendale RdWest Chester, OH 45069 · Phone (765) 458-9629

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mrs. Tammy R Williams Fnp- C 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

2

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

Trihealth Hf LLC
0.7 mi
Family Medicine
421 S CAMPUS AVE
Oxford, OH 45056
  • Reassigned Medicare billing, Ohio enrollment
  • 27 clinicians in this Medicare group
NPI 1174924872 (513) 529-3000
The Little Clinic Of Ohio LLC
23 mi
Family
7132 HAMILTON AVE
Cincinnati, OH 45231
  • Reassigned Medicare billing, Ohio enrollment
  • 537 clinicians in this Medicare group
NPI 1982761896 (513) 728-2780

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 45056 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
$84.72 typical visit price
range $54.34 – $166.65
Typical copayment $21.18 (range $13.58 – $41.66)
Most-billed visit code 99203
Established Patient
$96.44 typical visit price
range $17.10 – $135.40
Typical copayment $24.11 (range $4.27 – $33.85)
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.

ANDREA RENE DENGLER CNP
Nurse Practitioner (Family)
421 S CAMPUS AVE FL 1
OXFORD, OH 45056
Butler County (513) 529-3000

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 Tammy Williams's NPI number?

The NPI number for Tammy Williams is 1861179038. It was assigned to this individual provider in the NPPES registry on June 29, 2023.

Where is Tammy Williams located?

Tammy Williams practices at 421 S Campus Ave Fl 1, Oxford, OH 45056. The listed phone number is (513) 529-3000.

What is Tammy Williams's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Tammy Williams enrolled in Medicare?

Yes. Tammy Williams is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Tammy Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tammy Williams reassigns Medicare benefits to 2 organizations: Trihealth Hf LLC (Oxford, OH) and The Little Clinic Of Ohio LLC (Cincinnati, OH). 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 Tammy Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Tammy Williams accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Anthem Blue Cross and Blue Shield and CareSource and 1 other insurer list Tammy 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.

When was this NPI record last updated?

The NPPES record for Tammy Williams was last updated on October 30, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.