Doctor profile · Federal record
Dr. Donald Nimmer, M.D.
Family Medicine Physician (CMS: Family Practice) · Greenfield, WI
- NPI 1477555951
- Accepts Medicare
- MIPS 80.9 / 100 · 2023
- 39 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
4600 W Loomis RD, Suite 130
Greenfield, WI 532204858
(414) 389-4900
fax (414) 465-4606 - Mailing address
-
4935 S 76Th St Ste 101
Greenfield, WI 532204305
Credentials & registration
- NPI registered
- August 2005 — 21 yrs on file
- Profile last updated
- September 19, 2022
- Year of graduation
- 1987 — 39 yrs since
- Specialty taxonomy
- 207Q00000X — NUCC code
- State license (1)
- Wisconsin #29494
- Medicaid
- WI #31588100
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1477555951. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
737
Distinct HCPCS
6
Medicare allowed
$77,404
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 362 | 170 | $122 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 144 | 144 | $125 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 128 | 69 | $82 | |
G0008 |
Administration of influenza virus vaccine | 46 | 46 | $29 | |
90662 |
Influenza vaccine split virus, preservative free | 44 | 44 | $72 | |
69209 |
Removal of impacted ear wax by washing | 13 | 11 | $16 |
In context: peer comparison
Among 15 peers in this city , average services per provider: 52. This provider delivers 14× the peer median.Open Payments
Industry payments received
All-time total
$25
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Exact Sciences Corporation | 1 | $24.76 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
3,707
Patients
1,100
Total drug cost
$54,483
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 526 | 148 | $6,515 |
| Lisinopril | Generic | 482 | 130 | $3,841 |
| Simvastatin | Generic | 375 | 98 | $4,992 |
| Amlodipine Besylate | Generic | 323 | 87 | $2,291 |
| Losartan Potassium | Generic | 243 | 63 | $3,291 |
| Hydrochlorothiazide | Generic | 237 | 67 | $967 |
| Metformin Hcl Er (Metformin Hcl) | Brand | 229 | 67 | $3,900 |
| Levothyroxine Sodium | Generic | 225 | 59 | $4,228 |
| Omeprazole | Generic | 181 | 49 | $3,444 |
| Metoprolol Succinate | Generic | 165 | 45 | $3,417 |
Hospital affiliations
Frequently asked questions
What is Dr. Donald Nimmer's medical specialty?
Dr. Donald Nimmer practices Family Medicine Physician in Greenfield, WI.
Where does Dr. Donald Nimmer practice?
Dr. Donald Nimmer practices at 4600 W Loomis RD, Greenfield, WI 532204858. Office phone: 4143894900.
What is Dr. Donald Nimmer's NPI?
Dr. Donald Nimmer's National Provider Identifier (NPI) is 1477555951, issued by NPPES.
Does Dr. Donald Nimmer accept Medicare assignment?
Yes. Dr. Donald Nimmer accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Donald Nimmer commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.