DR. BRIAN THOMAS MICHALSEN (D.O.) – Family Medicine Physician, NPI 1548426158
Family Medicine Physician
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Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
5,041 FAMILY PRACTICE in IL
Provider Addresses for DR. BRIAN THOMAS MICHALSEN (D.O.)
102 LANDMARK DR
WINNEGAGO, IL 610883619
Phone: (815) 971-2000
Type: Location
8201 E Riverside Blvd
Rockford, IL 611142300
Phone: (815) 971-5000
Type: Location
2700 E Centre Ave
Portage, MI 490025500
Phone: (269) 286-7050
Type: Location
Mercyhealth Hospital–Rockton Avenue, 2400, North Rockton Avenue, Rockford, Winnebago County, Illinois, 61103, United States
ROCKFORD, IL 611033619
Phone: (815) 971-2000
Type: Mailing
6998 REDANSA DR
ROCKFORD, IL 611084378
Phone: (815) 971-2000
Fax: (815) 971-9620
Type: Location
601 JOHN STREET
BOX 42
KALAMAZOO, MI 49007
Phone:
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 7 Open Payments records for all available years, with a total value of $121.
Total Amount is formed as General ($121) + Research ($0) + Ownership ($0) = $121.
Last reported payment date: 2024-12-16 • Largest payer in this snapshot: AstraZeneca Pharmaceuticals LP ($46).
Total Amount
$121
General + Research + Ownership
Payments
7
Total payment records
General Amount
$121
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-16
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| AstraZeneca Pharmaceuticals LP | $46 |
| Merck Sharp & Dohme LLC | $26 |
| Exact Sciences Corporation | $20 |
| Lilly USA, LLC | $15 |
| Abbott Laboratories | $14 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2024-08-13
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20121112000448 | I | Family Practice | IL | TBD |
| I20240813003356 | I | Family Practice | MI | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 279 | 158 | $0 |
| G0439 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 141 | 141 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 124 | 94 | $0 |
| 20610 | Aspiration and/or injection of fluid from large joint | 69 | 55 | $0 |
| 93010 | Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 34 | 32 | $0 |
Insurance plans in this area (ZIP 61088)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| FAMILY MEDICINE | IL | 90670 | Pneumococcal vaccine for injection into muscle | 39 | 39 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| O B S T E T R I C S/ G Y N E C O L O G Y | MI | |
| Hand Surgery, Orthopedic Surgery | MI | |
| Physician Assistant | MI | |
| Physician Assistant | MI | |
| Cardiovascular Disease (Cardiology), Internal Medicine | MI | |
| Family Practice | MI | |
| O B S T E T R I C S/ G Y N E C O L O G Y | MI | |
| Endocrinology, Internal Medicine | MI | |
| Clinical Social Worker | MI | |
| Internal Medicine | MI |
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