Douglas C. Brown, D.O.
Family Medicine Physician · Marion, IL
Douglas C. Brown, D.O. is a family medicine physician with a practice address in Marion, Illinois, and NPI 1033364674, issued on Nov 24, 2008. Check the license (Illinois 036120519, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Douglas C. Brown
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 036120519 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1506 N.sioux Dr, Marion, IL 62959
- Phone
- (618) 519-9200
- Enumerated
- Nov 24, 2008
- Record last updated
- Sep 26, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (618) 985-9155
- Medicaid ID
- 036120519 IL
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Verify Douglas C. Brown 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 036120519Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average family medicine physician in 2024
167 Medicare Part D claims, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Humalog Kwikpen U-10011 claims
- Levothyroxine Sodium11 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.
Douglas C. Brown among 6,215 family medicine physician records in Illinois
Douglas C. Brown, D.O. is one of 6,215 family medicine physician records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 50% of them.
- NPI issued2008 · 50% of these records are older, 46% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2018 · 54% 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
19 family medicine physician records list a practice address in Marion
They are 19 of the 1,171 NPPES records with a practice address in Marion, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in Marion → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- James Alexander, MDMarion, IL 629591114094851
- Jan Bowman-Marsh, MDMarion, IL 629591992766190
- Shobha Dayal, MDMarion, IL 629591396702817
- Jodi Fox, M.D.Marion, IL 629591508848284
- Eric Graham, MDMarion, IL 629591720120462
- Renato Katubig, MDMarion, IL 629591316023898
- Jack Keller, M.D.Marion, IL 629591467636605
- Sean McCain, MDMarion, IL 629591629050307
Common questions
What is Douglas C. Brown, D.O.'s NPI number?
Douglas C. Brown, D.O.'s National Provider Identifier (NPI) is 1033364674, issued on Nov 24, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Douglas C. Brown, D.O. located?
The NPPES record lists a practice address at 1506 N.sioux Dr, Marion, IL, 62959. Phone: (618) 519-9200. Providers update this record themselves, so call before visiting.
How can I verify Douglas C. Brown, D.O.'s license?
NPPES lists Illinois license number 036120519, 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 Douglas C. Brown, D.O. prescribe under Medicare Part D?
In 2024, Douglas C. Brown, D.O. had 167 Medicare Part D claims; the average among family medicine physician prescribers was 3,544. 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.