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MS. HEATHER DAWN DAVIS APRN,FNP-C
NPI 1053880781
Nurse Practitioner in Mount Vernon, IL

Active since November 26, 2018PECOS EnrolledAccepts Medicare Assignment
75.73/100
CMS Quality Rating
4119 S WATER TOWER PL STE A, MOUNT VERNON, IL 62864(618) 816-6006(618) 816-6005 Get Directions Write a Review

NPPES record last updated: April 17, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 17, 2026, Jan 11, 2021, Jan 5, 2021 and 2 more (5 updates tracked since 2018).

About Ms. Heather Dawn Davis Aprn,fnp-c NPPES

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

MS. HEATHER DAWN DAVIS APRN,FNP-C (NPI 1053880781) is an individual nurse practitioner in Mount Vernon, Illinois, licensed in Illinois (209018023) and active in the NPI registry since November 2018. She is enrolled in Medicare PECOS and is a graduate of Other (2018).

NPPES Registry Identity

NPI1053880781
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameMS. HEATHER DAWN DAVISCredential: APRN,FNP-C
Location Address4119 S WATER TOWER PL STE AMount Vernon, IL 62864-6293
Mailing Address4119 S Water Tower Pl Ste AMount Vernon, IL 62864-6293 · (618) 816-6006 · Fax (618) 816-6005
Phone(618) 816-6006
Fax(618) 816-6005
Sole ProprietorNo
Medical School CMSOtherGraduated 2018
Enumeration DateNovember 26, 2018
Last NPPES UpdateApril 17, 20265 updates tracked since enumeration
NPPES CertifiedApril 17, 2026
✔ NPI 1053880781 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 IL · 209018023
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.
4119 S WATER TOWER PL STE A, Mount Vernon, IL 62864
Open in Google Maps ↗

Other Names 1

Former Name (1)Heather D Williams

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

Ms. Heather Dawn Davis Aprn,fnp-c 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 ID4981949948
PECOS Enrollment IDI20191127001392
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 Heather Davis reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mohammed Al-Zoubaidi MD PLLC
0.2 mi
Vascular Surgery
4119 S. WATER TOWER PLC, SUITE A
Mt. Vernon, IL 62864
  • Reassigned Medicare billing, Illinois enrollment
  • 2 clinicians in this Medicare group
NPI 1710734090 (618) 681-1188
Southern Illinois Medical Services, Nfp
42 mi
Internal Medicine
1239 E MAIN ST
Carbondale, IL 62901
  • Reassigned Medicare billing, Illinois enrollment
  • 702 clinicians in this Medicare group
NPI 1770656837 (618) 457-5200

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 62864 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
$85.71 typical visit price
range $54.80 – $168.44
Typical copayment $21.42 (range $13.70 – $42.11)
Most-billed visit code 99203
Established Patient
$97.25 typical visit price
range $17.16 – $136.56
Typical copayment $24.31 (range $4.29 – $34.14)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

75.73/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality63.09
Promoting Interoperability100
Improvement Activities40
Cost45.26

Other Providers at the Same Location NPPES 3

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

DR. MOHAMMED AL-ZOUBAIDI M.D
Surgery (Vascular Surgery)
4119 S WATER TOWER PL STE A
MOUNT VERNON, IL 62864
Jefferson County (618) 816-6006
SCHERRIE LYNN MCLASKEY FNP-C
Nurse Practitioner (Family)
4119 S WATER TOWER PL STE A
MOUNT VERNON, IL 62864
Jefferson County (618) 816-6006
DEACONESS ILLINOIS CROSSROADS INC
Clinic/Center (Radiology)
4119 S WATER TOWER PL STE A
MOUNT VERNON, IL 62864
Jefferson County (618) 246-9595

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 Heather Davis's NPI number?

The NPI number for Heather Davis is 1053880781. It was assigned to this individual provider in the NPPES registry on November 26, 2018. The provider is also known as Heather D Williams.

Where is Heather Davis located?

Heather Davis practices at 4119 S Water Tower Pl Ste A, Mount Vernon, IL 62864. The listed phone number is (618) 816-6006.

What is Heather Davis's specialty?

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

Is Heather Davis enrolled in Medicare?

Yes. Heather Davis 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 Heather Davis's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Heather Davis reassigns Medicare benefits to 2 organizations: Mohammed Al-Zoubaidi MD PLLC (Mt. Vernon, IL) and Southern Illinois Medical Services, Nfp (Carbondale, IL). 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 Heather Davis'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 Heather Davis was last updated on April 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.