Doctor profile · Federal record
Dr. David Knudtson, MD
Internal Medicine Physician (CMS: Internal Medicine) · Internal Medicine Physician · Naples, FL
- NPI 1558420323
- Accepts Medicare
- 35 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
6635 Hillway Cir Ste 400
Naples, FL 341128757
(239) 455-9550
fax (239) 455-8980 - Additional location
-
211 Waukegan RD Ste 200
Northfield, IL 600932724
(847) 242-6600
fax (847) 242-6605 - Mailing address
-
2675 Winkler Ave Fl 2
Fort Myers, FL 339019342
Credentials & registration
- NPI registered
- December 2006 — 20 yrs on file
- Profile last updated
- July 12, 2021
- Year of graduation
- 1991 — 35 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State licenses (2)
- Florida #ME148391 · Illinois #036-081216
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1558420323. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
8,624
Distinct HCPCS
10
Medicare allowed
$439,303
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 1,926 | 656 | $122 | |
36415 |
Insertion of needle into vein for collection of blood sample | 670 | 398 | $8 | |
83036 |
Hemoglobin a1c level | 590 | 379 | $9 | |
85025 |
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 525 | 368 | $8 | |
84443 |
Blood test, thyroid stimulating hormone (tsh) | 512 | 363 | $16 | |
80053 |
Blood test, comprehensive group of blood chemicals | 497 | 358 | $10 | |
80061 |
Blood test, lipids (cholesterol and triglycerides) | 483 | 356 | $13 | |
82306 |
Vitamin d-3 level | 459 | 342 | $29 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 373 | 373 | $130 | |
G0444 |
Annual depression screening, 5 to 15 minutes | 371 | 371 | $18 |
In context: peer comparison
Among 52 peers in this city , average services per provider: 217. This provider delivers 40× the peer median.Open Payments
Industry payments received
All-time total
$1,055
Transactions
55
Manufacturers
12
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| AstraZeneca Pharmaceuticals LP | 11 | $193.70 | |
| Amgen Inc. | 9 | $135.18 | |
| Boehringer Ingelheim Pharmaceuticals, Inc. | 8 | $128.06 | |
| PFIZER INC. | 5 | $92.32 | |
| Novartis Pharmaceuticals Corporation | 5 | $90.01 | |
| Janssen Pharmaceuticals, Inc | 4 | $88.26 | |
| Novo Nordisk Inc | 4 | $86.60 | |
| Teleflex LLC | 1 | $86.14 | |
| Esperion Therapeutics, Inc. | 3 | $65.53 | |
| Lilly USA, LLC | 2 | $42.39 | |
| GlaxoSmithKline, LLC. | 2 | $33.92 | |
| Kowa Pharmaceuticals America, Inc. | 1 | $13.11 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
5,226
Patients
1,764
Total drug cost
$77,702
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 763 | 244 | $10,656 |
| Levothyroxine Sodium | Generic | 526 | 177 | $7,408 |
| Amlodipine Besylate | Generic | 504 | 170 | $4,007 |
| Rosuvastatin Calcium | Generic | 500 | 184 | $12,594 |
| Lisinopril | Generic | 466 | 138 | $3,814 |
| Losartan Potassium | Generic | 344 | 110 | $4,794 |
| Tamsulosin Hcl | Generic | 290 | 100 | $5,287 |
| Metoprolol Succinate | Generic | 280 | 95 | $5,442 |
| Omeprazole | Generic | 274 | 94 | $5,189 |
| Metformin Hcl | Generic | 264 | 84 | $2,599 |
Hospital affiliations
Frequently asked questions
What is Dr. David Knudtson's medical specialty?
Dr. David Knudtson practices Internal Medicine Physician in Naples, FL.
Where does Dr. David Knudtson practice?
Dr. David Knudtson practices at 6635 Hillway Cir Ste 400, Naples, FL 341128757. Office phone: 2394559550.
What is Dr. David Knudtson's NPI?
Dr. David Knudtson's National Provider Identifier (NPI) is 1558420323, issued by NPPES.
Does Dr. David Knudtson accept Medicare assignment?
Yes. Dr. David Knudtson accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. David Knudtson commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Insertion of needle into vein for collection of blood sample (HCPCS 36415); Hemoglobin a1c level (HCPCS 83036). Source: CMS Medicare Physician & Other Practitioners file.