Doctor profile · Federal record
Dr. Mark Grossklaus, MD
Family Medicine Physician (CMS: Family Practice) · Waukesha, WI
- NPI 1255403101
- Accepts Medicare
- 32 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
717 W Moreland Blvd, Prohealth Care Medical Associates Moreland Family Medi
Waukesha, WI 531882432
(262) 542-9100
fax (262) 542-7366
Credentials & registration
- NPI registered
- November 2006 — 20 yrs on file
- Profile last updated
- August 1, 2013
- Year of graduation
- 1994 — 32 yrs since
- Specialty taxonomy
- 207Q00000X — NUCC code
- State license (1)
- Wisconsin #36936
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1255403101. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
4,184
Distinct HCPCS
10
Medicare allowed
$88,851
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
36415 |
Insertion of needle into vein for collection of blood sample | 3,323 | 1,692 | $8 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 226 | 156 | $120 | |
85610 |
Blood test, clotting time | 167 | 26 | $4 | |
93793 |
Anticoagulant management of patient taking warfarin | 143 | 34 | $11 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 123 | 123 | $122 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 58 | 55 | $85 | |
93005 |
Routine electrocardiogram (ecg) using at least 12 leads with tracing | 34 | 32 | $6 | |
G0008 |
Administration of influenza virus vaccine | 26 | 26 | $29 | |
90694 |
Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage | 25 | 25 | $76 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 24 | 20 | $169 |
In context: peer comparison
Among 21 peers in this city , average services per provider: 106. This provider delivers 39× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
2,711
Patients
859
Total drug cost
$38,750
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 469 | 144 | $5,094 |
| Amlodipine Besylate | Generic | 339 | 106 | $2,438 |
| Lisinopril | Generic | 259 | 78 | $2,353 |
| Rosuvastatin Calcium | Generic | 221 | 74 | $3,526 |
| Metoprolol Succinate | Generic | 184 | 50 | $3,702 |
| Pantoprazole Sodium | Generic | 156 | 51 | $2,282 |
| Levothyroxine Sodium | Generic | 150 | 51 | $3,282 |
| Losartan Potassium | Generic | 150 | 48 | $2,504 |
| Metformin Hcl Er (Metformin Hcl) | Brand | 141 | 50 | $2,501 |
| Omeprazole | Generic | 135 | 44 | $1,993 |
Hospital affiliations
Frequently asked questions
What is Dr. Mark Grossklaus's medical specialty?
Dr. Mark Grossklaus practices Family Medicine Physician in Waukesha, WI.
Where does Dr. Mark Grossklaus practice?
Dr. Mark Grossklaus practices at 717 W Moreland Blvd, Waukesha, WI 531882432. Office phone: 2625429100.
What is Dr. Mark Grossklaus's NPI?
Dr. Mark Grossklaus's National Provider Identifier (NPI) is 1255403101, issued by NPPES.
Does Dr. Mark Grossklaus accept Medicare assignment?
Yes. Dr. Mark Grossklaus accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Grossklaus commonly perform?
Top Medicare-reported procedures in 2023: Insertion of needle into vein for collection of blood sample (HCPCS 36415); Established patient office or other outpatient visit (HCPCS 99214); Blood test, clotting time (HCPCS 85610). Source: CMS Medicare Physician & Other Practitioners file.