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Edit this profileRobert E. Williams, MD practices internal medicine in New Berlin, WI. Robert is a 1997 graduate of Northeastern Ohio University College of Medicine. Robert is also listed as specializing in pediatrics. According to Medicare claims data, Robert cared for 279 Medicare patients across 592 services. The services billed most often include anticoagulant management of patient taking warfarin, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and blood test, clotting time. The provider's National Provider Identifier (NPI) is 1619909868.
Factual summary compiled by Guide.md from public records; not written by this provider.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
14555 W NATIONAL AVE
New Berlin, WI 53151
Within Internal Medicine generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
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Endocrine, blood, and bone
Kidney and urinary
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592 services · 279 patients · 8 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Anticoagulant management of patient taking warfarin | Treatment | 93793 |
169 | More often than most peers in Internal Medicine |
| Influenza vaccine split virus, preservative free | Treatment | 90662 |
20 | Less often than most peers in Internal Medicine |
| Sarscov2 vac 50 mcg/0.5ml im | Treatment | 91322 |
16 | Less often than most peers in Internal Medicine |
| Admn sarscov2 vacc 1 dose | Treatment | 90480 |
16 | Less often than most peers in Internal Medicine |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
155 | As often as other peers in Internal Medicine |
| Blood test, clotting time | Lab test | 85610 |
144 | More often than most peers in Internal Medicine |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
52 | As often as other peers in Internal Medicine |
| Administration of influenza virus vaccine | Billing code | G0008 |
20 | Less often than most peers in Internal Medicine |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Dr. Williams is an internist in New Berlin, WI. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
Dr. Williams is listed at 14555 W National Ave, New Berlin, WI 53151. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (262) 827-3636. Contact the office directly to confirm availability and scheduling.
NPI registry
Dr. Williams's National Provider Identifier is 1619909868. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Dr. Williams attended Northeastern Ohio University College of Medicine, graduating in 1997. This comes from the CMS National Downloadable File.
CMS public data
Dr. Williams has 29 years experience. Calculated from a graduation year of 1997, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Dr. Williams provides treatments such as anticoagulant management of patient taking warfarin and influenza vaccine split virus, preservative free, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Williams. If this is you, claiming it is free.
Guide.md
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