DR. KAREN A THORNBURG (MD) – Internal Medicine Physician, NPI 1003938119
Internal Medicine Physician
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Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
7,218 INTERNAL MEDICINE in MI
Provider Addresses for DR. KAREN A THORNBURG (MD)
2700 Baker St Fl 3
Muskegon, MI 49444
Phone: (231) 737-1335
Fax: (231) 737-0534
Type: Location
2700 BAKER ST FL 3
MUSKEGON, MI 494442157
Phone: (231) 737-1335
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 12 Open Payments records for all available years, with a total value of $207.
Total Amount is formed as General ($207) + Research ($0) + Ownership ($0) = $207.
Last reported payment date: 2024-12-03 • Largest payer in this snapshot: Supernus Pharmaceuticals, Inc. ($40).
Total Amount
$207
General + Research + Ownership
Payments
12
Total payment records
General Amount
$207
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-03
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Supernus Pharmaceuticals, Inc. | $40 |
| Novo Nordisk Inc | $39 |
| Neurocrine BioSciences, Inc. | $38 |
| ABBVIE INC. | $30 |
| Lundbeck LLC | $24 |
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: 2009-08-11
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
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 |
|---|---|---|---|---|
| I20090811000328 | I | Internal Medicine | 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 |
|---|---|---|---|---|
| 83036 | Hemoglobin a1c level | 82 | 46 | $0 |
| 82947 | Blood glucose (sugar) level | 25 | 13 | $0 |
| 81003 | Automated urinalysis test | 24 | 19 | $0 |
| 0124A | Adm sarscv2 bvl 30mcg/.3ml a | 14 | 12 | $0 |
Insurance plans in this area (ZIP 49444)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| INTERNAL MEDICINE | MI | 83036 | Hemoglobin A1C level | 84 | 47 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Family Practice | MI | |
| Family Practice, Addiction Medicine | MI | |
| Nurse Practitioner | MI | |
| Internal Medicine | MI | |
| Nurse Practitioner | MI | |
| Physician Assistant | MI | |
| - | MI | |
| Nurse Practitioner | MI | |
| Physician Assistant | MI | |
| Family Practice | MI |
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