Doctor profile · Federal record
Dr. Leah Mergen, PA-C
Physician Assistant · Sioux Falls, SD
- NPI 1023389392
- Accepts Medicare
- 15 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
521 N Main Ave Ste 100
Sioux Falls, SD 571045947
(605) 367-8214
Credentials & registration
- NPI registered
- January 2012 — 14 yrs on file
- Profile last updated
- August 29, 2017
- Year of graduation
- 2011 — 15 yrs since
- Specialty taxonomy
- 363A00000X — NUCC code
- State license (1)
- South Dakota #0799
- Medicaid (2)
- SD #6837110 · SD #6837112
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1023389392. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
212
Distinct HCPCS
3
Medicare allowed
$15,444
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 102 | 70 | $79 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 83 | 65 | $54 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 27 | 27 | $106 |
In context: peer comparison
Among 78 peers in Sioux Falls Physician Assistant, average services per provider: 103. This provider delivers 2.1× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
938
Patients
237
Total drug cost
$11,423
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Levothyroxine Sodium | Generic | 141 | 29 | $1,317 |
| Atorvastatin Calcium | Generic | 130 | 37 | $1,501 |
| Omeprazole | Generic | 87 | 24 | $673 |
| Duloxetine Hcl | Generic | 70 | 12 | $1,271 |
| Lisinopril | Generic | 66 | 21 | $661 |
| Gabapentin | Generic | 63 | 15 | $905 |
| Losartan Potassium | Generic | 61 | 16 | $713 |
| Amlodipine Besylate | Generic | 44 | 18 | $248 |
| Metoprolol Succinate | Generic | 44 | 13 | $1,341 |
| Pantoprazole Sodium | Generic | 42 | 0 | $475 |
Frequently asked questions
What is Dr. Leah Mergen's medical specialty?
Dr. Leah Mergen practices Physician Assistant in Sioux Falls, SD.
Where does Dr. Leah Mergen practice?
Dr. Leah Mergen practices at 521 N Main Ave Ste 100, Sioux Falls, SD 571045947. Office phone: 6053678214.
What is Dr. Leah Mergen's NPI?
Dr. Leah Mergen's National Provider Identifier (NPI) is 1023389392, issued by NPPES.
Does Dr. Leah Mergen accept Medicare assignment?
Yes. Dr. Leah Mergen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Leah Mergen commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439). Source: CMS Medicare Physician & Other Practitioners file.