Mark A. Mason, MD
Emergency Medicine Physician · Kirkwood, MO
Mark A. Mason, MD is an emergency medicine physician with a practice address in Kirkwood, Missouri, and NPI 1134167091, issued on Jun 3, 2006. Check the license (Missouri 102434, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Mark A. Mason
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 102434 MO
Self-reported in NPPES; status is on the state search - Practice location
- 525 Couch Ave, Kirkwood, MO 63122
- Phone
- (314) 966-1500
- Enumerated
- Jun 3, 2006
- Record last updated
- Sep 26, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (314) 966-1681
- Medicaid ID
- 209985902 MO
- Medicare enrollment
- Enrolled (PECOS I20041124000060); accepts Medicare assignment
- Medical or professional school
- University Of Michigan Medical School, 1985
- Entity
- Type 1 · individual
Also registered at 525 Couch Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- James Donnell, MDEmergency Medicine Physician1104873496
- Uma Eachempati, MDObstetrics & Gynecology Physician1285681163
- Jonas Grybinas, MDEmergency Medicine Physician1982658183
- Dorothy Holt, CRNACertified Registered Nurse Anesthetist1114980125
- Savitri Jain, MDInternal Medicine Physician1053368894
- Robert Paino, MDEmergency Medicine Physician1376590497
Verify Mark A. Mason 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 102434Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
57% fewer Medicare Part D claims than the average emergency medicine physician in 2024
97 Medicare Part D claims for 63 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Chlorthalidone12 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): 88.9 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,857.29
12 payments; by number, the most common kind was travel and lodging; the largest payer was Intuitive Surgical, Inc. The 12,335 providers of this specialty with any payment received $953.79 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 3 group practices
- Potosi Emergency Group, LLCPotosi, MO
- Southeastern Emergency Physicians OF Memphis LLCLouisiana, MO
- Ssm Health Care GroupSaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
9 emergency medicine physician records list a practice address in Kirkwood
They are 9 of the 511 NPPES records with a practice address in Kirkwood, and 1,405 emergency medicine physician records in Missouri.
All 9 in Kirkwood → All 1,405 in Missouri → Every provider in Kirkwood →
Other emergency medicine physician records in Missouri
- Robert Abbott, M.D.Saint Charles, MO1144269267
- Nagla Abdelmalek, M.D.Saint Louis, MO1003847591
- Donald Ables, MDKansas City, MO1346222189
- Allison Abma, DOBranson, MO1033613302
- Sean Abraham, D.O.Columbia, MO1326368994
- Lajon Addison, D.O.Columbia, MO1104871854
- Adegoke Adeleke, M.D., M.S.MMountain View, MO1568753481
- Opeolu Adeoye, MDSaint Louis, MO1023120623
- Lukuman Afuwape, M.DKansas City, MO1639494412
- Lourdes Aguilo Rodriguez, M.D.Joplin, MO1861804056
Common questions
What is Mark A. Mason, MD's NPI number?
Mark A. Mason, MD's National Provider Identifier (NPI) is 1134167091, issued on Jun 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark A. Mason, MD located?
The NPPES record lists a practice address at 525 Couch Ave, Kirkwood, MO, 63122. Phone: (314) 966-1500. Providers update this record themselves, so call before visiting.
How can I verify Mark A. Mason, MD's license?
NPPES lists Missouri license number 102434, 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 Mark A. Mason, MD prescribe under Medicare Part D?
In 2024, Mark A. Mason, MD had 97 Medicare Part D claims for 63 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Mark A. Mason, MD's MIPS final score?
The 2023 MIPS final score is 88.9 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.