Kathleen Cizek, M.D.
Internal Medicine Physician · Saint Louis, MO
Kathleen Cizek, M.D. is an internal medicine physician with a practice address in Saint Louis, Missouri, and NPI 1083605331, issued on Nov 3, 2005. Check the license (Missouri 105368, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Kathleen Cizek
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 105368 MO
Self-reported in NPPES; status is on the state search - Practice location
- 5034 Griffin RD, Saint Louis, MO 63128
- Phone
- (314) 843-7333
- Enumerated
- Nov 3, 2005
- Record last updated
- Sep 21, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (314) 843-9946
- Medicare enrollment
- Enrolled (PECOS I20071130000557); accepts Medicare assignment
- Medical or professional school
- University Of Chicago, Pritzker School Of Medicine, 1991
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,604 in Missouri → Look up another NPI →
Also registered at 5034 Griffin RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Curt Calcaterra, M.D.Internal Medicine Physician1205827557
- Marissa Digregorio, DNP, AGNPAdult Health Nurse Practitioner1700561321
- James Ebel, M.D.Internal Medicine Physician1174504146
- Christopher Espana, M.D.Family Medicine Physician1003922634
- Robert Geekie, M.D.Internal Medicine Physician1528059730
- Kathryn Henderson, M.D.Internal Medicine Physician1962630434
Verify Kathleen Cizek in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 105368Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.4 times the Medicare Part D claims of the average internal medicine physician in 2024
13,855 Medicare Part D claims for 839 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 520 claims were for opioids.
Most prescribed
- Amlodipine Besylate741 claims
- Atorvastatin Calcium572 claims
- Omeprazole494 claims
- Levothyroxine Sodium488 claims
- Lisinopril429 claims
- Meloxicam424 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: $702.52
37 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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 2 group practices
- Aging Well Health Care, LLCSaint Louis, MO
- American Multispecialty Group IncSaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kathleen Cizek among 2,604 internal medicine physician records in Missouri
Kathleen Cizek, M.D. is one of 2,604 internal medicine physician records with a practice address in Missouri. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 92% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 55% of these records are
- Graduated1991 · median 2006 among the 1,443 with a school on file
- Record last updated2012 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
941 internal medicine physician records list a practice address in Saint Louis
They are 941 of the 27,605 NPPES records with a practice address in Saint Louis, and 2,604 internal medicine physician records in Missouri.
All 2,604 in Missouri → Every provider in Saint Louis → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Christopher Bowe, MDSaint Louis, MO 631281003816976
- Curt Calcaterra, M.D.Saint Louis, MO 631281205827557
- Robert Curtin, MDSaint Louis, MO 631281538169495
- James Ebel, M.D.Saint Louis, MO 631281174504146
- Michael Fedak, M.D.Saint Louis, MO 631281174514384
- Patrick Garrett, M.D.Saint Louis, MO 631281669466629
- Robert Geekie, M.D.Saint Louis, MO 631281528059730
- David Hammond, M.D.Saint Louis, MO 631281437140639
Common questions
What is Kathleen Cizek, M.D.'s NPI number?
Kathleen Cizek, M.D.'s National Provider Identifier (NPI) is 1083605331, issued on Nov 3, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Kathleen Cizek, M.D. located?
The NPPES record lists a practice address at 5034 Griffin RD, Saint Louis, MO, 63128. Phone: (314) 843-7333. Providers update this record themselves, so call before visiting.
How can I verify Kathleen Cizek, M.D.'s license?
NPPES lists Missouri license number 105368, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Kathleen Cizek, M.D. prescribe under Medicare Part D?
In 2024, Kathleen Cizek, M.D. had 13,855 Medicare Part D claims for 839 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.