Brian Thomas Michalsen, D.O.
Family Medicine Physician · Rockford, IL
Brian Thomas Michalsen, D.O. is a family medicine physician with a practice address in Rockford, Illinois, and NPI 1548426158, issued on Aug 3, 2008. Check the license (Illinois 036-126596, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Brian Thomas Michalsen
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 036-126596 IL
036126596 IL
5101027951 MI
Self-reported in NPPES; status is on the state search - Practice location
- 6998 Redansa Dr, Rockford, IL 61108
- Phone
- (815) 971-2000
- Enumerated
- Aug 3, 2008
- Record last updated
- Aug 6, 2024
- Fax
- (815) 971-9620
- Medicare enrollment
- Enrolled (PECOS I20240813003356); accepts Medicare assignment
- Medical or professional school
- Midwestern University, Chicago College Of Osteopathic Med, 2008
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Verify Brian Thomas Michalsen 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 036-126596Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
43% more Medicare Part D claims than the average family medicine physician in 2024
5,084 Medicare Part D claims for 575 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 155 claims were for opioids.
Most prescribed
- Rosuvastatin Calcium269 claims
- Atorvastatin Calcium230 claims
- Amlodipine Besylate222 claims
- Levothyroxine Sodium222 claims
- Omeprazole160 claims
- Lisinopril141 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: $86.73
5 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. 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.
One hospital affiliation
- Bronson Methodist HospitalPortage, MI · Acute Care Hospitals4 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Brian Thomas Michalsen among 6,215 family medicine physician records in Illinois
Brian Thomas Michalsen, 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 fileYes · 60% of these records are
- Graduated2008 · 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).
145 family medicine physician records list a practice address in Rockford
They are 145 of the 3,893 NPPES records with a practice address in Rockford, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in Rockford → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Alvydas Baris, MDRockford, IL 611081821029091
- Alpa Boshku, M.D.Rockford, IL 611081689680449
- Danny Copeland, MDRockford, IL 611081790727766
- Richard Deming, MDRockford, IL 611081275562712
- Ralph Everson, MDRockford, IL 611081902967391
- Andrea Lawless, M.D.Rockford, IL 611081225100548
- Susan Lewinski, MDRockford, IL 611081770512261
- Ralph Naftaly, D.O.Rockford, IL 611081841215753
Common questions
What is Brian Thomas Michalsen, D.O.'s NPI number?
Brian Thomas Michalsen, D.O.'s National Provider Identifier (NPI) is 1548426158, issued on Aug 3, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Brian Thomas Michalsen, D.O. located?
The NPPES record lists a practice address at 6998 Redansa Dr, Rockford, IL, 61108. Phone: (815) 971-2000. Providers update this record themselves, so call before visiting.
How can I verify Brian Thomas Michalsen, D.O.'s license?
NPPES lists Illinois license number 036-126596, 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 Thomas Michalsen, D.O. prescribe under Medicare Part D?
In 2024, Brian Thomas Michalsen, D.O. had 5,084 Medicare Part D claims for 575 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.