DAVID J. KNUDTSON (MD) – Internal Medicine Physician, NPI 1558420323
Internal Medicine Physician
Main info
Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
12,368 INTERNAL MEDICINE in FL
Provider Addresses for DAVID J. KNUDTSON (MD)
6635 HILLWAY CIR STE 400
NAPLES, FL 341128757
Phone: (239) 455-9550
Fax: (239) 455-8980
Type: Location
2675 WINKLER AVE FL 2
FORT MYERS, FL 339019342
Phone: (877) 856-3774
Fax: (239) 599-2612
Type: Mailing
211 Waukegan Rd Ste 200
Northfield, IL 600932724
Phone: (847) 242-6600
Fax: (847) 242-6605
Type: Location
Waukegan Road, Glenbrook Countryside, Northfield Township, Cook County, Illinois, 60062, United States
NORTHFIELD, IL 600932724
Phone: (847) 242-6600
Fax: (847) 242-6605
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 93 Open Payments records for all available years, with a total value of $1,878.
Total Amount is formed as General ($1,878) + Research ($0) + Ownership ($0) = $1,878.
Last reported payment date: 2024-12-13 • Largest payer in this snapshot: Boehringer Ingelheim Pharmaceuticals, Inc. ($364).
Total Amount
$1,878
General + Research + Ownership
Payments
93
Total payment records
General Amount
$1,878
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-13
Latest reported date
Top Companies
Largest payers in this snapshot
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: 2021-06-10
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 |
|---|---|---|---|---|
| I20210610001259 | I | Internal Medicine | FL | 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 | 1,926 | 656 | $0 |
| 36415 | Insertion of needle into vein for collection of blood sample | 670 | 398 | $0 |
| 83036 | Hemoglobin a1c level | 590 | 379 | $0 |
| 85025 | Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 525 | 368 | $0 |
| 84443 | Blood test, thyroid stimulating hormone (tsh) | 512 | 363 | $0 |
Insurance plans in this area (ZIP 34112)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Family Practice | FL | |
| Nurse Practitioner | FL | |
| Nurse Practitioner | FL | |
| Family Practice | FL | |
| - | FL | |
| - | FL | |
| Internal Medicine | FL | |
| - | FL | |
| - | FL | |
| Family Practice | FL |
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