Dena L. Williams, MSN, APRN, FNP-BC
Family Nurse Practitioner · Alton, IL
Dena L. Williams, MSN, APRN, FNP-BC is a family nurse practitioner with a practice address in Alton, Illinois, and NPI 1417648825, issued on May 17, 2023. Check the license (Illinois 209.027455, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Dena L. Williams
- Credential
- MSN, APRN, FNP-BC
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 209.027455 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1 Professional Dr Ste 120, Alton, IL 62002
- Phone
- (618) 463-8555
- Enumerated
- May 17, 2023
- Record last updated
- May 23, 2023
- Medicare enrollment
- Enrolled (PECOS I20240208000927); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 7,639 in Illinois → Look up another NPI →
Verify Dena L. Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209.027455Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average family nurse practitioner in 2024
72 Medicare Part D claims for 22 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Institute For Research And Education IN Family MedicineSaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Dena L. Williams among 7,639 family nurse practitioner records in Illinois
Dena L. Williams, MSN, APRN, FNP-BC is one of 7,639 family nurse practitioner records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 78% of them.
- NPI issued2023 · 78% of these records are older, 15% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2023 · median 2018 among the 4,778 with a school on file
- Record last updated2023 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
38 family nurse practitioner records list a practice address in Alton
They are 38 of the 1,113 NPPES records with a practice address in Alton, and 7,639 family nurse practitioner records in Illinois.
All 7,639 in Illinois → Every provider in Alton → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Jacqueline Baalman, FNP-BCAlton, IL 620021912236183
- Cody Bilderback, FNPAlton, IL 620021467890657
- Cheryl Bray, FNPAlton, IL 620021225121619
- Lynn Brown, F.N.P.Alton, IL 620021275611618
- Kelley Campbell, RN, FNP-BCAlton, IL 620021245590074
- Tracy Dietz, FNPAlton, IL 620021477941938
- Shelly Hanko, FNPAlton, IL 620021740303627
- Christine Harlan, FNP-BCAlton, IL 620021477882454
Common questions
What is Dena L. Williams, MSN, APRN, FNP-BC's NPI number?
Dena L. Williams, MSN, APRN, FNP-BC's National Provider Identifier (NPI) is 1417648825, issued on May 17, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Dena L. Williams, MSN, APRN, FNP-BC located?
The NPPES record lists a practice address at 1 Professional Dr Ste 120, Alton, IL, 62002. Phone: (618) 463-8555. Providers update this record themselves, so call before visiting.
How can I verify Dena L. Williams, MSN, APRN, FNP-BC's license?
NPPES lists Illinois license number 209.027455, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Dena L. Williams, MSN, APRN, FNP-BC prescribe under Medicare Part D?
In 2024, Dena L. Williams, MSN, APRN, FNP-BC had 72 Medicare Part D claims for 22 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.