William S. Ritter, M.D.
Cardiovascular Disease Physician · Shawnee Mission, KS
William S. Ritter, M.D. is a cardiovascular disease physician with a practice address in Shawnee Mission, Kansas, and NPI 1104825462, issued on Jul 19, 2005. Check the license (Kansas 04-20789, as entered in NPPES) on the Kansas State Board of Healing Arts; the Medicare figures below come from public CMS files.
- Name
- William S. Ritter
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License numbers
- 04-20789 KS
R8312 MO
Self-reported in NPPES; status is on the state search - Practice location
- 9119 W 74TH St, Shawnee Mission, KS 66204
- Phone
- (913) 789-3290
- Enumerated
- Jul 19, 2005
- Record last updated
- Mar 19, 2025
- Fax
- (913) 789-3208
- Medicaid ID
- 1104825462 MO
- Medicare enrollment
- Enrolled (PECOS I20051029000336); accepts Medicare assignment
- Medical or professional school
- Jefferson Medical College Of Thomas Jefferson University, 1971
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 190 in Kansas → Look up another NPI →
Also registered at 9119 W 74TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- M Obadah Al Chekakie, MDClinical Cardiac Electrophysiology Physician1982853610
- Shelley Elias, PAPhysician Assistant1508955303
- Amy Giedt, M.D.Obstetrics & Gynecology Physician1295814135
- Annette Grundmeier, MDPediatrics Physician1376543983
- Jay Jackson, M.D.Cardiovascular Disease Physician1558360743
- Ana Martinez, M.D.Obstetrics & Gynecology Physician1992887178
Verify William S. Ritter in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersKansas State Board of Healing Arts
Search for license 04-20789Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
50% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
1,527 Medicare Part D claims for 270 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Losartan Potassium173 claims
- Amlodipine Besylate122 claims
- Metoprolol Succinate121 claims
- Atorvastatin Calcium113 claims
- Eliquis95 claims
- Spironolactone75 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: $209.26
10 payments; by number, the most common kind was food and beverage; the largest payer was iRhythm Technologies, Inc. The 16,686 providers of this specialty with any payment received $3,819.56 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
- Shawnee Mission Medical Center IncMerriam, KS
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William S. Ritter among 190 cardiovascular disease physician records in Kansas
William S. Ritter, M.D. is one of 190 cardiovascular disease physician records with a practice address in Kansas. 87% 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, 91% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1971 · median 1999 among the 125 with a school on file
- Record last updated2025 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Kansas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 cardiovascular disease physician records list a practice address in Shawnee Mission
They are 5 of the 407 NPPES records with a practice address in Shawnee Mission, and 190 cardiovascular disease physician records in Kansas.
All 190 in Kansas → Every provider in Shawnee Mission → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Mazda Biria, M.D.Merriam, KS 662041194847244
- Matthew Butler, MDMerriam, KS 662041326359308
- Trevor Caldarera, MDShawnee Mission, KS 662041982231361
- Michelle Dew, MDMerriam, KS 662041003853763
- Jay Jackson, M.D.Shawnee Mission, KS 662041558360743
- John Lecluyse, M.D.Merriam, KS 662041356790810
- Jhulan Mukharji, M.D.Shawnee Mission, KS 662041154320414
- John Peterson, MDShawnee Mission, KS 662041346249554
Common questions
What is William S. Ritter, M.D.'s NPI number?
William S. Ritter, M.D.'s National Provider Identifier (NPI) is 1104825462, issued on Jul 19, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William S. Ritter, M.D. located?
The NPPES record lists a practice address at 9119 W 74TH St, Shawnee Mission, KS, 66204. Phone: (913) 789-3290. Providers update this record themselves, so call before visiting.
How can I verify William S. Ritter, M.D.'s license?
NPPES lists Kansas license number 04-20789, as entered by the provider. Search the Kansas State Board of Healing Arts at https://www.ksbha.ks.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William S. Ritter, M.D. prescribe under Medicare Part D?
In 2024, William S. Ritter, M.D. had 1,527 Medicare Part D claims for 270 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. 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.