Doctor profile · Federal record
Dr. Tammy Karls, NP
Nurse Practitioner · Fond du LAC, WI
- NPI 1043933955
- 4 yrs on file
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
420 E Division St
Fond du LAC, WI 549354560
(920) 926-8495
Credentials & registration
- NPI registered
- September 2022 — 4 yrs on file
- Specialty taxonomy
- 363L00000X — NUCC code
- State license (1)
- Wisconsin #13153-33
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1043933955. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
340
Distinct HCPCS
5
Medicare allowed
$20,722
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
51798 |
Ultrasound measurement of bladder capacity after voiding | 138 | 100 | $10 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 80 | 64 | $72 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 53 | 45 | $102 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 47 | 47 | $133 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 22 | 22 | $89 |
In context: peer comparison
Among 14 peers in Fond du LAC Nurse Practitioner, average services per provider: 51. This provider delivers 6.7× the peer median.Open Payments
Industry payments received
All-time total
$31
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Sumitomo Pharma America, INC. | 1 | $31.00 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
676
Patients
276
Total drug cost
$59,722
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Tamsulosin Hcl | Generic | 251 | 115 | $4,740 |
| Oxybutynin Chloride ER (Oxybutynin Chloride) | Brand | 118 | 45 | $4,732 |
| Finasteride | Generic | 116 | 41 | $2,276 |
| Myrbetriq (Mirabegron) | Brand | 47 | 17 | $36,344 |
| Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) | Brand | 33 | 28 | $146 |
| Methenamine Hippurate | Generic | 21 | 0 | $2,569 |
| Ciprofloxacin Hcl | Generic | 20 | 18 | $107 |
| Doxazosin Mesylate | Generic | 15 | 0 | $209 |
| Silodosin | Generic | 15 | 0 | $4,409 |
| Trimethoprim | Generic | 15 | 0 | $1,414 |
Frequently asked questions
What is Dr. Tammy Karls's medical specialty?
Dr. Tammy Karls practices Nurse Practitioner in Fond du LAC, WI.
Where does Dr. Tammy Karls practice?
Dr. Tammy Karls practices at 420 E Division St, Fond du LAC, WI 549354560. Office phone: 9209268495.
What is Dr. Tammy Karls's NPI?
Dr. Tammy Karls's National Provider Identifier (NPI) is 1043933955, issued by NPPES.
What procedures does Dr. Tammy Karls commonly perform?
Top Medicare-reported procedures in 2023: Ultrasound measurement of bladder capacity after voiding (HCPCS 51798); Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.