Richard W. Mason, DO
Surgery Physician · Sandwich, IL
Richard W. Mason, DO is a surgery physician with a practice address in Sandwich, Illinois, and NPI 1003809625, issued on Aug 30, 2005. Check the license (Illinois 03682889, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Richard W. Mason
- Credential
- DO
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- 03682889 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1 E Countyline RD, Sandwich, IL 60548
- Phone
- (815) 786-2722
- Enumerated
- Aug 30, 2005
- Record last updated
- Jan 7, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (815) 786-6840
- Medicaid ID
- 036082819 IL
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 1,520 in Illinois → Look up another NPI →
Also registered at 1 E Countyline RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Faulk, MDColon & Rectal Surgery Physician1760475271
- Daniel Gauthier, DOFamily Medicine Physician1740273499
- John Gleason, MDFamily Medicine Physician1912990532
- Teresa Grant, MDInternal Medicine Physician1922091412
- Eric Janota, DOFamily Medicine Physician1659364305
- Kenneth Kavanaugh, DOFamily Medicine Physician1104819697
Verify Richard W. 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 03682889Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
18% fewer Medicare Part D claims than the average surgery physician in 2024
120 Medicare Part D claims for 99 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. Brand-name drugs were 44% of claims.
Most prescribed
- Peg 3350-Electrolyte93 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 MIPS final score for 2023 (Medicare payment program): 91.4 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Richard W. Mason among 1,520 surgery physician records in Illinois
Richard W. Mason, DO is one of 1,520 surgery physician records with a practice address in Illinois. 66% 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 · 66% of these records are
- In the CMS Doctors and Clinicians fileNo · 43% of these records are
- Record last updated2021 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in Illinois
There are 1,520 surgery physician records in Illinois.
All 1,520 in Illinois → Every provider in Sandwich → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Colathur Palani, M.D.Riverside, IL 605461063423093
- William Asihene, M.D, PH.DPlano, IL 605451023161940
- Faaiza Vaince, MDWarrenville, IL 605551699921809
- Gregory Grant, MDNaperville, IL 605401912973686
- Bart Green, MDNaperville, IL 605401386610087
- Lori Hutcherson, MDNaperville, IL 605401093102683
- Irene Israel, MDNaperville, IL 605401629431739
- Beatrice Klade, M.D,Naperville, IL 605401689640567
Common questions
What is Richard W. Mason, DO's NPI number?
Richard W. Mason, DO's National Provider Identifier (NPI) is 1003809625, issued on Aug 30, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Richard W. Mason, DO located?
The NPPES record lists a practice address at 1 E Countyline RD, Sandwich, IL, 60548. Phone: (815) 786-2722. Providers update this record themselves, so call before visiting.
How can I verify Richard W. Mason, DO's license?
NPPES lists Illinois license number 03682889, 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 Richard W. Mason, DO prescribe under Medicare Part D?
In 2024, Richard W. Mason, DO had 120 Medicare Part D claims for 99 beneficiaries; the average among surgery physician prescribers was 147. Part D covers Medicare prescriptions only.
What is Richard W. Mason, DO's MIPS final score?
The 2023 MIPS final score is 91.4 of 100. 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.