Doctor profile · Federal record
Dr. Jennifer Shimshak, PA-C
Medical Physician Assistant (CMS: Physician Assistant) · Physician Assistant · Onalaska, WI
- NPI 1598028128
- Accepts Medicare
- 14 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
3111 Gundersen Dr
Onalaska, WI 546508447
(608) 775-8630 - Mailing address
-
1836 South Ave
La Crosse, WI 546015429
Credentials & registration
- NPI registered
- June 2012 — 14 yrs on file
- Profile last updated
- January 10, 2014
- Year of graduation
- 2012 — 14 yrs since
- Specialty taxonomy
- 363AM0700X — NUCC code
- State license (1)
- Wisconsin #2922
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1598028128. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
277
Distinct HCPCS
5
Medicare allowed
$22,998
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 100 | 100 | $106 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 77 | 55 | $79 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 69 | 65 | $53 | |
99442 |
Telephone medical discussion with physician, 11-20 minutes | 19 | 18 | $53 | |
G0438 |
Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit | 12 | 12 | $135 |
In context: peer comparison
Among 5 peers in Onalaska Medical Physician Assistant, average services per provider: 66. This provider delivers 4.2× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
1,023
Patients
294
Total drug cost
$15,030
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 213 | 62 | $3,750 |
| Lisinopril | Generic | 107 | 32 | $753 |
| Levothyroxine Sodium | Generic | 104 | 32 | $1,333 |
| Sertraline Hcl | Generic | 83 | 29 | $905 |
| Amlodipine Besylate | Generic | 78 | 23 | $742 |
| Omeprazole | Generic | 77 | 27 | $1,150 |
| Losartan Potassium | Generic | 69 | 22 | $1,383 |
| Metoprolol Succinate | Generic | 50 | 16 | $665 |
| Warfarin Sodium | Generic | 46 | 0 | $868 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 40 | 14 | $2,226 |
Hospital affiliations
Frequently asked questions
What is Dr. Jennifer Shimshak's medical specialty?
Dr. Jennifer Shimshak practices Medical Physician Assistant in Onalaska, WI.
Where does Dr. Jennifer Shimshak practice?
Dr. Jennifer Shimshak practices at 3111 Gundersen Dr, Onalaska, WI 546508447. Office phone: 6087758630.
What is Dr. Jennifer Shimshak's NPI?
Dr. Jennifer Shimshak's National Provider Identifier (NPI) is 1598028128, issued by NPPES.
Does Dr. Jennifer Shimshak accept Medicare assignment?
Yes. Dr. Jennifer Shimshak accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Jennifer Shimshak commonly perform?
Top Medicare-reported procedures in 2023: Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439); Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.