Charissa K. Williams, APNP
- Medicare patients, 2024
- 117
- Part D claims, 2024
- 611
- Hospital affiliations
- 2
- Industry payments
- $28
- Medical group
- 1
- Practice address
- 2500 E Capitol Dr, Appleton, WI 54911
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Encircle Health - HOPD
Acute Care Hospital outpatient department · Appleton, Wisconsin
Find Charissa 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.
Charissa K. Williams is a family nurse practitioner in Appleton, Wisconsin
Charissa Williams practices at Encircle Health - HOPD in Appleton, Wisconsin.
Charissa Williams' NPI, 1700426079, was assigned on January 14, 2020. Charissa Williams holds Wisconsin license 9855.
- NPI
- 1700426079NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1850727884
- NPI enumeration date
- January 14, 2020
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Charissa K. Williams practices at Encircle Health - HOPD in Appleton, Wisconsin
Charissa Williams' primary practice is Encircle Health - HOPD, at 2500 E Capitol Dr, Appleton, WI 54911.
- Encircle Health - HOPD2500 E Capitol Dr, Appleton, WI 54911
Source: Dmand AI Affiliation Data
Charissa K. Williams is affiliated with 4 sites of care and 1 medical group
Charissa Williams' primary practice is Encircle Health - HOPD in Appleton, Wisconsin. Charissa Williams is also affiliated with ThedaCare Regional Medical Center-Appleton. The medical group on file is ThedaCare Behavioral Health Walk-in Care-Neenah. Dmand AI also links Charissa Williams to 1 more hospital and 1 group practice or clinic, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Charissa K. Williams' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Charissa Williams practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Encircle Health - HOPD | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Charissa K. Williams is one of 2,261 family nurse practitioners in Wisconsin
Family is Charissa Williams' primary specialty in the NPI Registry, under taxonomy code 363LF0000X. Charissa Williams is licensed in Wisconsin.
Specialties and state licenses
- Family nurse practitioner, WisconsinPrimary
Family nurse practitioners near Charissa 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
Charissa K. Williams treated 117 Medicare patients in 2024, average age 74
CMS counts 117 Medicare patients who saw Charissa Williams in 2024. The largest group is 65 to 74, with 57 patients. 75% of them have high blood pressure, and 68% have high cholesterol. Their average risk score is 2.08, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Charissa Williams' median patient age at 68, with 79% women.
Charissa Williams' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Charissa Williams' Medicare patients by sex, 2024
- Women8472%
- Men3328%
Chronic conditions among Charissa Williams' Medicare patients, 2024
- High blood pressure75%
- High cholesterol68%
- Cancer67%
- Arthritis41%
- Chronic kidney disease38%
- Mood disorders33%
- Depression30%
- Diabetes30%
Share of Medicare patients with each condition. A patient can have several.
Charissa Williams' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women79%
- Men21%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Charissa K. Williams wrote 611 Medicare Part D claims in 2024
In 2024, Charissa Williams wrote 611 Medicare Part D claims for 204 patients. 83% of them were for generic drugs.
Charissa Williams' Part D claims by kind of drug, 2024
- Generic505 claims83%
- Brand-name106 claims17%
Drug classes CMS tracks in Charissa Williams' Part D claims, 2024
- Opioids7%44 of 611 claims
- Antibiotics2%14 of 611 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 Charissa K. Williams takes part in Medicare
Charissa 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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Charissa K. Williams received $28 in industry payments in 2025
CMS Open Payments shows 2 general payments to Charissa Williams from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Celgene Corporation paid the most, $14.
Companies that paid Charissa 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 Charissa K. 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 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 Charissa K. 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 Charissa K. Williams' NPI number?
Charissa K. Williams' NPI number is 1700426079. It was assigned on January 14, 2020, and it is active in the NPI Registry.
What does Charissa K. Williams specialize in?
Charissa K. Williams is a family nurse practitioner in Appleton, Wisconsin. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).
Where does Charissa K. Williams practice?
Charissa Williams practices at 2500 E Capitol Dr, Appleton, WI 54911. Charissa Williams' primary practice is Encircle Health - HOPD in Appleton, Wisconsin. Dmand AI also links Charissa Williams to 1 hospital and 1 group practice or clinic.
What is Charissa K. Williams' medical license number?
Charissa Williams holds Wisconsin license 9855.
Which hospitals is Charissa K. Williams affiliated with?
Charissa Williams is affiliated with ThedaCare Regional Medical Center-Appleton. Dmand AI links Charissa Williams to 1 more hospital.
What medical group is Charissa K. Williams part of?
Charissa Williams is linked to ThedaCare Behavioral Health Walk-in Care-Neenah.
Does Charissa K. Williams accept Medicare?
Yes. CMS lists Charissa Williams as accepting Medicare assignment.
How many Medicare patients does Charissa K. Williams see?
CMS counts 117 Medicare patients who saw Charissa Williams in 2024, with an average age of 74.
Has Charissa K. Williams received payments from drug or device companies?
CMS Open Payments shows $28 in general payments to Charissa Williams from 2 companies from 2025 to 2025. The largest total came from Celgene Corporation.
How long has Charissa K. Williams been practicing?
Charissa Williams graduated from medical school in 2019, 7 years ago.
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