Doctor profile · Federal record
Dr. Katherine Tjaden, PA-C
Physician Assistant · Ames, IA
- NPI 1013974575
- Accepts Medicare
- 15 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
3800 Lincoln Way
Ames, IA 500143402
(515) 956-4100
fax (515) 956-4108 - Mailing address
-
Po Box 3014, 1215 Duff Ave McFarland Clinic PC
Ames, IA 500103014
Credentials & registration
- NPI registered
- April 2006 — 20 yrs on file
- Profile last updated
- February 22, 2024
- Year of graduation
- 2011 — 15 yrs since
- Specialty taxonomy
- 363A00000X — NUCC code
- State license (1)
- Iowa #001576
- Medicaid
- IA #0638536
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1013974575. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
269
Distinct HCPCS
6
Medicare allowed
$13,468
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 145 | 133 | $72 | |
87086 |
Bacterial colony count, urine | 34 | 31 | $8 | |
81002 |
Urinalysis, manual test | 30 | 27 | $3 | |
87077 |
Bacterial culture for aerobic isolates | 22 | 21 | $8 | |
87186 |
Evaluation of antimicrobial drug (antibiotic, antifungal, antiviral), microdilution or agar dilution | 22 | 21 | $8 | |
0241U |
Respiratory infectious agent detection by rna for severe acute respiratory syndrome coronavirus 2 (covid 19), influenza a, influenza b, and respiratory syncytial virus, upper respiratory specimen, each reported as detected or not detected | 16 | 16 | $140 |
In context: peer comparison
Among 6 peers in Ames Physician Assistant, average services per provider: 116. This provider delivers 2.3× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
99
Patients
94
Total drug cost
$1,210
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Azithromycin | Generic | 25 | 22 | $130 |
| Cefdinir | Generic | 21 | 21 | $628 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 15 | 14 | $162 |
| Doxycycline Hyclate | Generic | 14 | 14 | $199 |
| Amoxicillin | Generic | 12 | 12 | $75 |
| Prednisone | Generic | 12 | 11 | $16 |
Frequently asked questions
What is Dr. Katherine Tjaden's medical specialty?
Dr. Katherine Tjaden practices Physician Assistant in Ames, IA.
Where does Dr. Katherine Tjaden practice?
Dr. Katherine Tjaden practices at 3800 Lincoln Way, Ames, IA 500143402. Office phone: 5159564100.
What is Dr. Katherine Tjaden's NPI?
Dr. Katherine Tjaden's National Provider Identifier (NPI) is 1013974575, issued by NPPES.
Does Dr. Katherine Tjaden accept Medicare assignment?
Yes. Dr. Katherine Tjaden accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Katherine Tjaden commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Bacterial colony count, urine (HCPCS 87086); Urinalysis, manual test (HCPCS 81002). Source: CMS Medicare Physician & Other Practitioners file.