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MELISSA JO WILLIAMS
NPI 1245788504
Nurse Practitioner in Oxford, MS

Active since September 15, 2016PECOS EnrolledAccepts Medicare Assignment
2301 S. LAMAR BLVD SUITE 130, OXFORD, MS 38655(662) 513-1300(662) 513-1336 Get Directions Write a Review

NPPES record last updated: September 15, 2016. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Melissa Jo Williams NPPES

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

MELISSA JO WILLIAMS (NPI 1245788504) is an individual nurse practitioner in Oxford, Mississippi, licensed in Mississippi (901539) and active in the NPI registry since September 2016. She is enrolled in Medicare PECOS and is a graduate of Other (2016).

NPPES Registry Identity

NPI1245788504
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameMELISSA JO WILLIAMS
Location Address2301 S. LAMAR BLVD SUITE 130Oxford, MS 38655
Mailing AddressPo Box 405827Atlanta, GA 30384
Phone(662) 513-1300
Fax(662) 513-1336
Sole ProprietorNo
Medical School CMSOtherGraduated 2016
Enumeration DateSeptember 15, 2016
✔ NPI 1245788504 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in MS · 901539
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
2301 S. LAMAR BLVD SUITE 130, Oxford, MS 38655
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, 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 and accepts Medicare assignment

Melissa Jo Williams 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 ID9739477373
PECOS Enrollment IDI20161013001578
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

8

Medicare enrollment records show Melissa Williams reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Redmed, LLC
29 mi
Urgent Care
12 BROOKS XING
Pontotoc, MS 38863
  • Reassigned Medicare billing, Mississippi enrollment
  • 118 clinicians in this Medicare group
NPI 1437589157 (662) 489-4044
Grenada Emergency Group, LLC
43 mi
Emergency Medicine
960 AVENT DR
Grenada, MS 38901
  • Reassigned Medicare billing, Mississippi enrollment
  • 83 clinicians in this Medicare group
NPI 1194388082 (662) 227-7000
United Emergency Services, Inc.
58 mi
Emergency Medicine
100 HOSPITAL ST
Booneville, MS 38829
  • Reassigned Medicare billing, Mississippi enrollment
  • 95 clinicians in this Medicare group
NPI 1326007915 (662) 720-5000
Uppal Medical Center LLC
108 mi
Rural Health
1727 E UNION ST
Greenville, MS 38703
  • Reassigned Medicare billing, Mississippi enrollment
  • 164 clinicians in this Medicare group
NPI 1558927905 (662) 577-6673
Heal All Wound Care LLC
143 mi
Adult Health
660 LAKELAND EAST DR STE 210
Flowood, MS 39232
  • Reassigned Medicare billing, Mississippi enrollment
  • 32 clinicians in this Medicare group
NPI 1093554982 (601) 665-4162
Mdb Care Management LLC
143 mi
Primary Care
215 KATHERINE DR
Flowood, MS 39232
  • Reassigned Medicare billing, Mississippi enrollment
  • 89 clinicians in this Medicare group
NPI 1144925272 (601) 665-4162
Minor Med Care, LLC
150 mi
Primary Care
2860 MCDOWELL ROAD EXT
Jackson, MS 39204
  • Reassigned Medicare billing, Mississippi enrollment
  • 170 clinicians in this Medicare group
NPI 1407968738 (601) 372-1117
Mdb Behavioral Health Services LLC
159 mi
Rural Health
1911 MISSION 66 STE B
Vicksburg, MS 39180
  • Reassigned Medicare billing, Mississippi enrollment
  • 180 clinicians in this Medicare group
NPI 1669835310 (601) 665-4162

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 13

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.

Injection, ceftriaxone sodium, per 250 mg J0696
Ceftriaxone sodium is an antibiotic injection used to treat a variety of bacterial infections. Each injection contains 250 mg of the medicine. It works by stopping the growth of bacteria in your body.
96 services22 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.
46 services43 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.
37 services31 patients
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.
37 services35 patients
Detection test by immunoassay technique for streptococcus, group a (strep) 87430
A detection test using the immunoassay technique for Group A Strep is a simple procedure. It identifies a specific bacteria, Streptococcus, which can cause throat infections. A swab from your throat is taken and tested for the presence of these bacteria.
25 services24 patients
Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza 87428
This test uses a method called immunoassay to identify severe acute respiratory syndrome coronavirus and influenza. It works by detecting specific proteins (antigens) in a sample, like a nasal swab. It's a powerful tool in diagnosing these viral infections.
24 services23 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 38655 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
$80.50 typical visit price
range $51.65 – $159.18
Typical copayment $20.12 (range $12.91 – $39.79)
Most-billed visit code 99203
Established Patient
$92.20 typical visit price
range $16.15 – $129.61
Typical copayment $23.05 (range $4.03 – $32.40)
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.

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 Melissa Williams's NPI number?

The NPI number for Melissa Williams is 1245788504. It was assigned to this individual provider in the NPPES registry on September 15, 2016.

Where is Melissa Williams located?

Melissa Williams practices at 2301 S. Lamar Blvd Suite 130, Oxford, MS 38655. The listed phone number is (662) 513-1300.

What is Melissa Williams's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Melissa Williams enrolled in Medicare?

Yes. Melissa 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 Melissa Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Melissa Williams reassigns Medicare benefits to 8 organizations: Redmed, LLC (Pontotoc, MS), Grenada Emergency Group, LLC (Grenada, MS), United Emergency Services, Inc. (Booneville, MS), Uppal Medical Center LLC (Greenville, MS), Heal All Wound Care LLC (Flowood, MS) and 3 more organizations, listed in the Medicare section above. 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 Melissa Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Melissa Williams accept?

Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter of Alabama and Ambetter of Tennessee and 3 other insurers list Melissa 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 Melissa Williams was last updated on September 15, 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.