Kassandra Williams, PA-C
Physician Assistant · Saint Louis, MO
Kassandra Williams, PA-C is a physician assistant with a practice address in Saint Louis, Missouri, and NPI 1699495770, issued on Aug 30, 2022. Check the license (Missouri 2022039976, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kassandra Williams
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 2022039976 MO
Self-reported in NPPES; status is on the state search - Practice location
- 10012 Kennerly RD Ste 300, Saint Louis, MO 63128
- Phone
- (314) 692-2807
- Enumerated
- Aug 30, 2022
- Record last updated
- Jun 19, 2026
- Fax
- (314) 991-0727
- Medicare enrollment
- Enrolled (PECOS I20221129002504); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 1,790 in Missouri → Look up another NPI →
Also registered at 10012 Kennerly RD Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Allyson Fischer, FNPFamily Nurse Practitioner1669262564
- Rajiv Handa, M.D.Clinical Cardiac Electrophysiology Physician1790783538
- Madhu Kancherla, M.D.Cardiovascular Disease Physician1942209036
- Richard Keating, M.D.Cardiovascular Disease Physician1730258658
Verify Kassandra Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Missouri board licenses this profession
Search for license 2022039976Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
18% fewer Medicare Part D claims than the average physician assistant in 2024
683 Medicare Part D claims for 229 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 37% of claims.
Most prescribed
- Eliquis194 claims
- Metoprolol Succinate104 claims
- Amiodarone Hcl100 claims
- Metoprolol Tartrate80 claims
- Xarelto46 claims
- Sotalol41 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.
Industry payments in 2024: $2,231.76
44 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Mercy Clinic Heart And Vascular LLCSaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kassandra Williams among 1,790 physician assistant records in Missouri
Kassandra Williams, PA-C is one of 1,790 physician assistant records with a practice address in Missouri. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 68% of them.
- NPI issued2022 · 68% of these records are older, 24% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2022 · median 2019 among the 1,250 with a school on file
- Record last updated2026 · 32% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
498 physician assistant records list a practice address in Saint Louis
They are 498 of the 27,605 NPPES records with a practice address in Saint Louis, and 1,790 physician assistant records in Missouri.
All 1,790 in Missouri → Every provider in Saint Louis → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Renee Amato, PASaint Louis, MO 631281922085356
- Ellen Barton, PASaint Louis, MO 631281851435903
- Elizabeth Brightman, PA-CSaint Louis, MO 631281225214380
- Christina Bruning, PA-CSaint Louis, MO 631281144272006
- Lisa Chappell, PA-CSaint Louis, MO 631281851327373
- Leslie Cranick, P.A.Saint Louis, MO 631281003846700
- Heather Halenkamp, PA-CSaint Louis, MO 631281700037637
- Elizabeth Hermann, P.A.Saint Louis, MO 631281922262377
Common questions
What is Kassandra Williams, PA-C's NPI number?
Kassandra Williams, PA-C's National Provider Identifier (NPI) is 1699495770, issued on Aug 30, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Kassandra Williams, PA-C located?
The NPPES record lists a practice address at 10012 Kennerly RD Ste 300, Saint Louis, MO, 63128. Phone: (314) 692-2807. Providers update this record themselves, so call before visiting.
How can I verify Kassandra Williams, PA-C's license?
NPPES lists Missouri license number 2022039976, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.
How much does Kassandra Williams, PA-C prescribe under Medicare Part D?
In 2024, Kassandra Williams, PA-C had 683 Medicare Part D claims for 229 beneficiaries; the average among physician assistant prescribers was 830. 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.