Leslie Ann Williams, FNP
- Medicare patients, 2024
- 361
- Part D claims, 2024
- 339
- Hospital affiliations
- 3
- Industry payments
- $22
- Medical groups
- 9
- Practice address
- 400 North Pleasant Avenue, Centralia, IL 62801
- Practice phone
- Call (618) 436-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Leslie Williams' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Leslie Ann Williams is a family nurse practitioner in Centralia, Illinois
Leslie Williams practices at SSM Health St. Mary's Hospital - Centralia in Centralia, Illinois, part of SSM Health Care.
Leslie Williams' NPI, 1962647149, was assigned on December 2, 2008. Leslie Williams holds Illinois license 277000097.
- NPI
- 1962647149NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0143368498
- NPI enumeration date
- December 2, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (618) 436-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Leslie Ann Williams practices at SSM Health St. Mary's Hospital - Centralia in Centralia, Illinois
Leslie Williams' primary practice is SSM Health St. Mary's Hospital - Centralia, at 400 North Pleasant Avenue, Centralia, IL 62801 in Marion County. The practice phone is (618) 436-8000.
- SSM Health St. Mary's Hospital - Centralia400 North Pleasant Avenue, Centralia, IL 62801 · Marion CountyPhone(618) 436-8000
Source: Dmand AI Affiliation Data
Leslie Ann Williams is affiliated with 4 sites of care and 9 medical groups
Leslie Williams' primary practice is SSM Health St. Mary's Hospital - Centralia in Centralia, Illinois, part of SSM Health Care. Leslie Williams is also affiliated with SSM Health Good Samaritan Hospital - Mt. Vernon. The medical group on file is SSM Health Medical Group. Dmand AI also links Leslie Williams to 1 more hospital, 8 medical groups and 1 breast imaging center, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Leslie Ann Williams' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Leslie Williams practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| SSM Health St. Mary's Hospital - Centralia | Available with a free account |
| +3 more sites and 8 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Leslie Ann Williams is one of 7,275 family nurse practitioners in Illinois
Family is Leslie Williams' primary specialty in the NPI Registry, under taxonomy code 363LF0000X. Leslie Williams is licensed in Illinois.
Specialties and state licenses
- Family nurse practitioner, IllinoisPrimary
Family nurse practitioners near Leslie Williams
Counts of family nurse practitioners with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Leslie Ann Williams treated 361 Medicare patients in 2024, average age 74
CMS counts 361 Medicare patients who saw Leslie Williams in 2024. The largest group is 65 to 74, with 124 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 37% are also on Medicaid. Their average risk score is 1.98, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Leslie Williams' median patient age at 70, with 60% women.
Leslie Williams' Medicare patients by age, 2024
Leslie Williams' Medicare patients by sex, 2024
- Women21860%
- Men14340%
Chronic conditions among Leslie Williams' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Anxiety43%
- Chronic kidney disease43%
- Mood disorders41%
- COPD40%
- Diabetes40%
Share of Medicare patients with each condition. A patient can have several.
Leslie Williams' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women60%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Leslie Ann Williams wrote 339 Medicare Part D claims in 2024
In 2024, Leslie Williams wrote 339 Medicare Part D claims for 203 patients. 97% of them were for generic drugs.
Leslie Williams' Part D claims by kind of drug, 2024
- Generic329 claims97%
- Brand-name and other10 claims3%
Drug classes CMS tracks in Leslie Williams' Part D claims, 2024
- Opioids20%67 of 339 claims
- Antibiotics30%101 of 339 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Leslie Ann Williams takes part in Medicare
Leslie Williams accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Leslie Ann Williams received $22 in industry payments in 2025
CMS Open Payments shows 1 general payment to Leslie Williams from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $22.
Companies that paid Leslie Williams the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Leslie Ann Williams's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Leslie Ann Williams
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Leslie Ann Williams' NPI number?
Leslie Ann Williams' NPI number is 1962647149. It was assigned on December 2, 2008, and it is active in the NPI Registry.
What does Leslie Ann Williams specialize in?
Leslie Ann Williams is a family nurse practitioner in Centralia, Illinois. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).
Where does Leslie Ann Williams practice?
Leslie Williams practices at 400 North Pleasant Avenue, Centralia, IL 62801. Leslie Williams' primary practice is SSM Health St. Mary's Hospital - Centralia in Centralia, Illinois, part of SSM Health Care. Dmand AI also links Leslie Williams to 1 hospital, 8 medical groups and 1 breast imaging center.
What is Leslie Ann Williams' office phone number?
The practice phone on file for Leslie Williams is (618) 436-8000.
What is Leslie Ann Williams' medical license number?
Leslie Williams holds Illinois license 277000097.
Which hospitals is Leslie Ann Williams affiliated with?
Leslie Williams practices at SSM Health St. Mary's Hospital - Centralia in Centralia, Illinois. Leslie Williams is also affiliated with SSM Health Good Samaritan Hospital - Mt. Vernon. Dmand AI links Leslie Williams to 1 more hospital.
What medical group is Leslie Ann Williams part of?
Leslie Williams is linked to SSM Health Medical Group. Dmand AI links Leslie Williams to 8 more medical groups.
Does Leslie Ann Williams accept Medicare?
Yes. CMS lists Leslie Williams as accepting Medicare assignment.
How many Medicare patients does Leslie Ann Williams see?
CMS counts 361 Medicare patients who saw Leslie Williams in 2024, with an average age of 74.
Has Leslie Ann Williams received payments from drug or device companies?
CMS Open Payments shows $22 in general payments to Leslie Williams from 1 company from 2025 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Leslie Ann Williams been practicing?
Leslie Williams graduated from medical school in 2008, 18 years ago.
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