NPPES file of Aug 9, 2026

Stephen Vierthaler, MD

Family Medicine Physician · Kansas City, MO

Stephen Vierthaler, MD is a family medicine physician with a practice address in Kansas City, Missouri, and NPI 1508812355, issued on May 25, 2006. Check the license (Missouri 2006007775, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1508812355
Name
Stephen Vierthaler
Credential
MD
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
2006007775 MO
Self-reported in NPPES; status is on the state search
Practice location
7900 Lees Summit RD, Kansas City, MO 64139
Phone
(816) 404-7000
Enumerated
May 25, 2006
Record last updated
Nov 18, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20060630000125); accepts Medicare assignment
Medical or professional school
University Of Kansas School Of Med (Kc/Wich/Sal), 1977
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 7900 Lees Summit RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Brandon Abbott, D.O.Family Medicine Physician1356875702
  2. Seenu Abraham, MDStudent in an Organized Health Care Education/Training Program1437611514
  3. Rebecca Aguayo, M.D.Family Medicine Physician1740741453
  4. Debra Ahern, DOFamily Medicine Physician1790749166
  5. Marwa Aljardali, MDStudent in an Organized Health Care Education/Training Program1598569451
  6. Alma AllenStudent in an Organized Health Care Education/Training Program1700645074

Verify Stephen Vierthaler in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
    Search for license 2006007775
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Missouri license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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95% fewer Medicare Part D claims than the average family medicine physician in 2024

187 Medicare Part D claims for 62 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 18 claims were for opioids.

  1. Stephen Vierthaler187
  2. Specialty average3,544

Most prescribed

  1. Cephalexin14 claims
  2. Tramadol Hcl12 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.

The practice group's MIPS final score for 2023 (Medicare payment program): 86.9 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score77.5
  2. Costout of 100 · 30%57.7
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. University Health PhysiciansKansas City, MO

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Stephen Vierthaler among 2,991 family medicine physician records in Missouri

Stephen Vierthaler, MD is one of 2,991 family medicine physician records with a practice address in Missouri. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 13% of them.

  • NPI issued2006 · 13% of these records are older, 52% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated1977 · median 2006 among the 1,778 with a school on file
  • Record last updated2021 · 53% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

322 family medicine physician records list a practice address in Kansas City

They are 322 of the 13,759 NPPES records with a practice address in Kansas City, and 2,991 family medicine physician records in Missouri.

The 8 family medicine physician records with the nearest ZIP codes

  1. Debra Ahern, DOKansas City, MO 641391790749166
  2. Anne Arey, MDKansas City, MO 641391174587174
  3. Angela Barnett, MDKansas City, MO 641391396746244
  4. Cindy Chang, M.D.Kansas City, MO 641391558321422
  5. Robert Griffith, MDKansas City, MO 641391144284159
  6. Laura Hempstead, DOKansas City, MO 641391902860240
  7. Billy Irons, MDKansas City, MO 641391134183486
  8. Edwin Kraemer, MDKansas City, MO 641391760477749

Common questions

What is Stephen Vierthaler, MD's NPI number?

Stephen Vierthaler, MD's National Provider Identifier (NPI) is 1508812355, issued on May 25, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Stephen Vierthaler, MD located?

The NPPES record lists a practice address at 7900 Lees Summit RD, Kansas City, MO, 64139. Phone: (816) 404-7000. Providers update this record themselves, so call before visiting.

How can I verify Stephen Vierthaler, MD's license?

NPPES lists Missouri license number 2006007775, 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 Stephen Vierthaler, MD prescribe under Medicare Part D?

In 2024, Stephen Vierthaler, MD had 187 Medicare Part D claims for 62 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.

What is Stephen Vierthaler, MD's MIPS final score?

The 2023 MIPS final score is 86.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.