Brian Didier, MD
Family Medicine Physician · Dixon, IL
Brian Didier, MD is a family medicine physician with a practice address in Dixon, Illinois, and NPI 1417521618, issued on May 13, 2021. Check the license (Illinois 036169544, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Brian Didier
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 036169544 IL
Self-reported in NPPES; status is on the state search - Practice location
- 403 E 1St St, Dixon, IL 61021
- Phone
- (815) 285-5629
- Enumerated
- May 13, 2021
- Record last updated
- Dec 10, 2024
- Fax
- (815) 285-5634
- Medicare enrollment
- Enrolled (PECOS I20230912003463); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Also registered at 403 E 1St St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Brian Didier 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 036169544Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% fewer Medicare Part D claims than the average family medicine physician in 2024
1,385 Medicare Part D claims for 140 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium66 claims
- Lisinopril56 claims
- Omeprazole49 claims
- Meloxicam40 claims
- Metformin Hcl37 claims
- Levothyroxine Sodium36 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.
Industry payments in 2024: $39.22
2 payments; by number, the most common kind was food and beverage; the largest payer was Genentech USA, Inc. The 55,478 providers of this specialty with any payment received $902.55 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 one group practice
- Osf Multi-Specialty GroupDixon, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brian Didier among 6,215 family medicine physician records in Illinois
Brian Didier, MD 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 2021, is newer than 84% of them.
- NPI issued2021 · 84% of these records are older, 13% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2020 · median 2006 among the 3,714 with a school on file
- Record last updated2024 · 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).
21 family medicine physician records list a practice address in Dixon
They are 21 of the 693 NPPES records with a practice address in Dixon, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in Dixon → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- James Gallant, MDDixon, IL 610211295712974
- Michael Greer, MDDixon, IL 610211427542067
- Juan Hernandez, M.D.Dixon, IL 610211780650176
- Joyce Johnson, M.D.Dixon, IL 610211033464987
- Khyati Kadia, M.D.Dixon, IL 610211639522576
- Jaclyn Parayao, MDDixon, IL 610211184283590
- Poonam Sachdev, M.D.Dixon, IL 610211659529527
- John Selgestad, M.D.Dixon, IL 610211518935014
Common questions
What is Brian Didier, MD's NPI number?
Brian Didier, MD's National Provider Identifier (NPI) is 1417521618, issued on May 13, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Brian Didier, MD located?
The NPPES record lists a practice address at 403 E 1St St, Dixon, IL, 61021. Phone: (815) 285-5629. Providers update this record themselves, so call before visiting.
How can I verify Brian Didier, MD's license?
NPPES lists Illinois license number 036169544, 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 Brian Didier, MD prescribe under Medicare Part D?
In 2024, Brian Didier, MD had 1,385 Medicare Part D claims for 140 beneficiaries; 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.