Doctor profile · Federal record

Dr. Robert Hallock, M.D.

Emergency Medicine Physician (CMS: Emergency Medicine) · Emergency Medicine Physician · Emergency Medicine Physician · Emergency Medicine Physician · Milwaukee, WI

  • NPI 1043265804
  • Accepts Medicare
  • 27 yrs in practice
  • Licensed in 4 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 7 locations .

NPPES Updated May 11, 2026
Primary practice
111 E Wisconsin Ave, Suite 2000
Milwaukee, WI 532024815
(414) 290-6720
fax (414) 290-6755
Additional location
1050 W Industrial Blvd Ste 17
Cumberland, MD 215024331
(240) 964-9300
Additional location
10701 New Georges Creek RD Sw
Frostburg, MD 215321457
(301) 689-3229
Show 4 more locations
Additional location
23789 Garrett Hwy
Mc Henry, MD 215411338
(240) 488-4139
Additional location
2661 County Highway I
Chippewa Falls, WI 547295407
(715) 723-1811
Additional location
900 W Clairemont Ave
Eau Claire, WI 547016122
(715) 717-4121
Additional location
45 Hunt Club Dr
Ridgeley, WV 267537567
(304) 726-4501

Credentials & registration

NPPES · NUCC
NPI registered
May 2006 — 20 yrs on file
Profile last updated
May 8, 2020
Year of graduation
1999 — 27 yrs since
Specialty taxonomy
207P00000X — NUCC code
State licenses (4)
Maryland #D75037 · West Virginia #26624 · Wisconsin #44713-020 · Illinois #035105392
Medicaid (2)
IL #036105392 · WI #34602500

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1043265804. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
147
Distinct HCPCS
4
Medicare allowed
$14,360
HCPCS Description Services Patients Avg allowed
99284 Emergency department visit with moderate level of medical decision making 56 53 $112
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 46 40 $8
99285 Emergency department visit with high level of medical decision making 34 34 $163
99291 Critical care, first 30-74 minutes 11 11 $198

In context: peer comparison

Among 117 peers in this city , average services per provider: 82. This provider delivers 1.8× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
12
Patients
12
Total drug cost
$68
Drug Type Claims Patients Total cost
Azithromycin Generic 12 12 $68

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Robert Hallock's medical specialty?
Dr. Robert Hallock practices Emergency Medicine Physician in Milwaukee, WI.
Where does Dr. Robert Hallock practice?
Dr. Robert Hallock practices at 111 E Wisconsin Ave, Milwaukee, WI 532024815. Office phone: 4142906720.
What is Dr. Robert Hallock's NPI?
Dr. Robert Hallock's National Provider Identifier (NPI) is 1043265804, issued by NPPES.
Does Dr. Robert Hallock accept Medicare assignment?
Yes. Dr. Robert Hallock accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Robert Hallock commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with moderate level of medical decision making (HCPCS 99284); Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (HCPCS 93010); Emergency department visit with high level of medical decision making (HCPCS 99285). Source: CMS Medicare Physician & Other Practitioners file.