Doctor profile · Federal record
Dr. Karen Sadler, ARNP
Nurse Practitioner · Waterloo, IA
- NPI 1891396529
- Accepts Medicare
- 6 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
2515 Cyclone Dr Ste B
Waterloo, IA 507019746
(319) 888-8044 - Mailing address
-
Po Box 2758
Waterloo, IA 507042758
Credentials & registration
- NPI registered
- November 2020 — 6 yrs on file
- Profile last updated
- February 7, 2022
- Year of graduation
- 2020 — 6 yrs since
- Specialty taxonomy
- 363L00000X — NUCC code
- State license (1)
- Iowa #A161407
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1891396529. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
4,313
Distinct HCPCS
10
Medicare allowed
$213,588
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
17003 |
Destruction of precancer skin growth, 2-14 growths | 1,568 | 208 | $5 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 1,025 | 619 | $71 | |
17000 |
Destruction of precancer skin growth, 1 growth | 389 | 256 | $44 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 381 | 275 | $101 | |
11310 |
Shaving of skin growth of face, ears, eyelids, nose, lips, or mouth, 0.5 cm or less | 216 | 144 | $77 | |
11300 |
Shaving of skin growth of body, arms, or legs, 0.5 cm or less | 156 | 104 | $56 | |
11305 |
Shaving of skin growth of scalp, neck, hands, feet, or genitals, 0.5 cm or less | 110 | 74 | $59 | |
69210 |
Removal of impacted ear wax | 101 | 59 | $35 | |
17110 |
Destruction of skin growth, 1-14 growths | 95 | 83 | $87 | |
31231 |
Diagnostic exam of nasal passages using an endoscope | 54 | 46 | $146 |
In context: peer comparison
Among 43 peers in Waterloo Nurse Practitioner, average services per provider: 355. This provider delivers 12× the peer median.Open Payments
Industry payments received
All-time total
$80
Transactions
4
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Regeneron Healthcare Solutions, INC. | 2 | $41.34 | |
| ConvaTec INC. | 1 | $25.47 | |
| Genzyme Corporation | 1 | $13.61 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,077
Patients
461
Total drug cost
$21,780
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Fluticasone Propionate | Generic | 297 | 115 | $4,227 |
| Montelukast Sodium | Generic | 219 | 43 | $2,380 |
| Azelastine Hcl | Generic | 138 | 54 | $3,733 |
| Ipratropium Bromide | Generic | 69 | 34 | $2,907 |
| Triamcinolone Acetonide | Generic | 65 | 48 | $321 |
| Ketoconazole | Generic | 60 | 32 | $1,151 |
| Betamethasone Dipropionate | Generic | 49 | 23 | $2,663 |
| Famotidine | Generic | 38 | 14 | $319 |
| Cephalexin | Generic | 33 | 28 | $138 |
| Hydroxyzine Hcl | Generic | 26 | 0 | $408 |
Frequently asked questions
What is Dr. Karen Sadler's medical specialty?
Dr. Karen Sadler practices Nurse Practitioner in Waterloo, IA.
Where does Dr. Karen Sadler practice?
Dr. Karen Sadler practices at 2515 Cyclone Dr Ste B, Waterloo, IA 507019746. Office phone: 3198888044.
What is Dr. Karen Sadler's NPI?
Dr. Karen Sadler's National Provider Identifier (NPI) is 1891396529, issued by NPPES.
Does Dr. Karen Sadler accept Medicare assignment?
Yes. Dr. Karen Sadler accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Karen Sadler commonly perform?
Top Medicare-reported procedures in 2023: Destruction of precancer skin growth, 2-14 growths (HCPCS 17003); Established patient office or other outpatient visit (HCPCS 99213); Destruction of precancer skin growth, 1 growth (HCPCS 17000). Source: CMS Medicare Physician & Other Practitioners file.