Doctor profile · Federal record

Dr. Dena Williams, MSN, APRN, FNP-BC

Family Nurse Practitioner (CMS: Nurse Practitioner) · Alton, IL

  • NPI 1417648825
  • Accepts Medicare
  • 3 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1 Professional Dr Ste 120
Alton, IL 620025068
(618) 463-8555

Credentials & registration

NPPES · NUCC
NPI registered
May 2023 — 3 yrs on file
Profile last updated
May 23, 2023
Year of graduation
2023 — 3 yrs since
Specialty taxonomy
363LF0000X — NUCC code
State license (1)
Illinois #209.027455

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1417648825. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
202
Distinct HCPCS
2
Medicare allowed
$14,391
HCPCS Description Services Patients Avg allowed
99213 Established patient office or other outpatient visit, 20-29 minutes 184 144 $75
87428 Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza 18 18 $30

In context: peer comparison

Among 13 peers in Alton Family Nurse Practitioner, average services per provider: 95. This provider delivers 2.1× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
47
Patients
44
Total drug cost
$992
Drug Type Claims Patients Total cost
Doxycycline Hyclate Generic 21 20 $321
Albuterol Sulfate Hfa (Albuterol Sulfate) Brand 15 13 $564
Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) Brand 11 11 $108

Frequently asked questions

Auto-generated from federal data
What is Dr. Dena Williams's medical specialty?
Dr. Dena Williams practices Family Nurse Practitioner in Alton, IL.
Where does Dr. Dena Williams practice?
Dr. Dena Williams practices at 1 Professional Dr Ste 120, Alton, IL 620025068. Office phone: 6184638555.
What is Dr. Dena Williams's NPI?
Dr. Dena Williams's National Provider Identifier (NPI) is 1417648825, issued by NPPES.
Does Dr. Dena Williams accept Medicare assignment?
Yes. Dr. Dena Williams accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Dena Williams commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza (HCPCS 87428). Source: CMS Medicare Physician & Other Practitioners file.