Doctor profile · Federal record
Dr. Jeffrey Tiemstra, M.D.
Family Medicine Physician (CMS: Family Practice) · Elkhorn, WI
- NPI 1336252238
- Accepts Medicare
- 42 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
W3985 County Road Nn
Elkhorn, WI 531214337
(262) 741-2000 - Mailing address
-
Po Box 735044
Chicago, IL 606735044
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- August 7, 2023
- Year of graduation
- 1984 — 42 yrs since
- Specialty taxonomy
- 207Q00000X — NUCC code
- State license (1)
- Wisconsin #64749
- Medicaid
- WI #100049570
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1336252238. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
303
Distinct HCPCS
6
Medicare allowed
$28,123
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99308 |
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes | 86 | 40 | $71 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 84 | 61 | $87 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 50 | 42 | $122 | |
99305 |
Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes | 46 | 38 | $128 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 22 | 22 | $119 | |
83036 |
Hemoglobin a1c level | 15 | 15 | $10 |
In context: peer comparison
Among 6 peers in Elkhorn Family Medicine Physician, average services per provider: 81. This provider delivers 3.7× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
929
Patients
260
Total drug cost
$42,261
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 122 | 29 | $2,000 |
| Levothyroxine Sodium | Generic | 104 | 28 | $1,511 |
| Gabapentin | Generic | 81 | 23 | $2,791 |
| Furosemide | Generic | 76 | 21 | $528 |
| Potassium Chloride | Generic | 71 | 13 | $1,265 |
| Eliquis (Apixaban) | Brand | 70 | 16 | $28,168 |
| Lisinopril | Generic | 69 | 26 | $568 |
| Omeprazole | Generic | 49 | 18 | $897 |
| Amlodipine Besylate | Generic | 44 | 17 | $460 |
| Metformin Hcl | Generic | 44 | 20 | $458 |
Hospital affiliations
Frequently asked questions
What is Dr. Jeffrey Tiemstra's medical specialty?
Dr. Jeffrey Tiemstra practices Family Medicine Physician in Elkhorn, WI.
Where does Dr. Jeffrey Tiemstra practice?
Dr. Jeffrey Tiemstra practices at W3985 County Road Nn, Elkhorn, WI 531214337. Office phone: 2627412000.
What is Dr. Jeffrey Tiemstra's NPI?
Dr. Jeffrey Tiemstra's National Provider Identifier (NPI) is 1336252238, issued by NPPES.
Does Dr. Jeffrey Tiemstra accept Medicare assignment?
Yes. Dr. Jeffrey Tiemstra accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Jeffrey Tiemstra commonly perform?
Top Medicare-reported procedures in 2023: Subsequent nursing facility care with straightforward level of medical decision making (HCPCS 99308); 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.