Doctor profile · Federal record
Dr. Robert Williams, MD
Internal Medicine Physician (CMS: Internal Medicine) · Pediatrics Physician · New Berlin, WI
- NPI 1619909868
- Accepts Medicare
- 29 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
14555 W National Ave
New Berlin, WI 531514494
(262) 827-3636 - Mailing address
-
3003 W Good Hope RD
Milwaukee, WI 53209
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- November 23, 2021
- Year of graduation
- 1997 — 29 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Wisconsin #43644
- Medicaid
- WI #34124200
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1619909868. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
819
Distinct HCPCS
10
Medicare allowed
$42,951
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
93793 |
Anticoagulant management of patient taking warfarin | 213 | 55 | $11 | |
85610 |
Blood test, clotting time | 191 | 49 | $4 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 180 | 82 | $121 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 62 | 62 | $122 | |
G0010 |
Administration of hepatitis b vaccine | 55 | 33 | $29 | |
90746 |
Hepatitis b vaccine, adult dosage (3 dose schedule) | 41 | 29 | $69 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 23 | 22 | $85 | |
G0008 |
Administration of influenza virus vaccine | 21 | 21 | $29 | |
90662 |
Influenza vaccine split virus, preservative free | 19 | 19 | $72 | |
90739 |
Hepatitis b vaccine (hepb), cpg-adjuvanted, adult dosage, 2 dose or 4 dose schedule, for intramuscular use | 14 | 13 | $156 |
In context: peer comparison
Among 4 peers in New Berlin Internal Medicine Physician, average services per provider: 100. This provider delivers 8.2× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
1,928
Patients
491
Total drug cost
$28,141
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Lisinopril | Generic | 269 | 60 | $1,868 |
| Atorvastatin Calcium | Generic | 194 | 51 | $2,387 |
| Pravastatin Sodium | Generic | 175 | 46 | $4,761 |
| Simvastatin | Generic | 147 | 35 | $1,780 |
| Levothyroxine Sodium | Generic | 143 | 28 | $2,772 |
| Hydrochlorothiazide | Generic | 132 | 36 | $473 |
| Tamsulosin Hcl | Generic | 120 | 32 | $2,342 |
| Amlodipine Besylate | Generic | 109 | 35 | $939 |
| Pantoprazole Sodium | Generic | 104 | 24 | $1,576 |
| Furosemide | Generic | 102 | 32 | $704 |
Frequently asked questions
What is Dr. Robert Williams's medical specialty?
Dr. Robert Williams practices Internal Medicine Physician in New Berlin, WI.
Where does Dr. Robert Williams practice?
Dr. Robert Williams practices at 14555 W National Ave, New Berlin, WI 531514494. Office phone: 2628273636.
What is Dr. Robert Williams's NPI?
Dr. Robert Williams's National Provider Identifier (NPI) is 1619909868, issued by NPPES.
Does Dr. Robert Williams accept Medicare assignment?
Yes. Dr. Robert Williams accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Robert Williams commonly perform?
Top Medicare-reported procedures in 2023: Anticoagulant management of patient taking warfarin (HCPCS 93793); Blood test, clotting time (HCPCS 85610); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.