Reginald Kai Mason, MD
Surgery Physician · Alton, IL
Reginald Kai Mason, MD is a surgery physician with a practice address in Alton, Illinois, and NPI 1699739607, issued on Apr 14, 2006. Check the license (Illinois 036169863, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Reginald Kai Mason
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License numbers
- 036169863 IL
2021-03370 NC
0101236379 VA
Self-reported in NPPES; status is on the state search - Practice location
- 2 Saint Anthonys Way Ste 105, Alton, IL 62002
- Phone
- (618) 465-2761
- Enumerated
- Apr 14, 2006
- Record last updated
- Oct 20, 2025
- Fax
- (618) 465-4750
- Medicare enrollment
- Enrolled (PECOS I20260122004273); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 2 Saint Anthonys Way Ste 105
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Khalid Naseer, MDGastroenterology Physician1851341366
Verify Reginald Kai Mason in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036169863Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average surgery physician in 2024
16 Medicare Part D claims for 11 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D.
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: $1,114.65
7 payments; by number, the most common kind was food and beverage; the largest payer was Intuitive Surgical, Inc. The 17,103 providers of this specialty with any payment received $3,513.80 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
- Osf Multi-Specialty GroupAlton, IL
- St Vincent HospitalSanta Fe, NM
- Vidant Medical Group LLCAhoskie, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Surgery Physician providers in Illinois
There are 1,520 surgery physician records in Illinois.
Other surgery physician records in Illinois
- Douglas Aach, MDShiloh, IL1508817040
- Andrew Abadier, DOChicago, IL1124657473
- Shabirhusain Abadin, M.D.Chicago, IL1467712596
- Iftikharul Abbasy, MDOak Brook, IL1104814755
- Mahmoud Abd-El-Hafez, MDSpringfield, IL1710516943
- Samir Abdo, M.D.Eldorado, IL1578612982
- Chandrakumaran Abivarma, M.D.Park Ridge, IL1467135137
- Gerard Abood, M.DMaywood, IL1629237227
- Mohammad Abou El-Ezz, MDChicago, IL1790536746
- Gifty Abraham, M.D.Maywood, IL1881039279
Common questions
What is Reginald Kai Mason, MD's NPI number?
Reginald Kai Mason, MD's National Provider Identifier (NPI) is 1699739607, issued on Apr 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Reginald Kai Mason, MD located?
The NPPES record lists a practice address at 2 Saint Anthonys Way Ste 105, Alton, IL, 62002. Phone: (618) 465-2761. Providers update this record themselves, so call before visiting.
How can I verify Reginald Kai Mason, MD's license?
NPPES lists Illinois license number 036169863, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Reginald Kai Mason, MD prescribe under Medicare Part D?
In 2024, Reginald Kai Mason, MD had 16 Medicare Part D claims for 11 beneficiaries; the average among surgery physician prescribers was 147. 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.