Physician Profile
Unclaimed ProfileAbout MCWILLIAMS
Based in Peoria, IL, Robert R McWilliams, M.D. is listed in the NPI registry under medical oncology. Robert graduated from George Washington University School of Medicine in 1997. Robert is also listed as specialising in internal medicine and hematology & oncology.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What does Dr. McWilliams specialise in?
Dr. McWilliams is a medical oncology in Peoria, IL. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “MEDICAL ONCOLOGY”.
NPI registry
Where is Dr. McWilliams located?
Dr. McWilliams is listed at 530 NE GLEN OAK AVE, Peoria, IL 61637. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. McWilliams's phone number?
The number on file is (309) 655-2000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. McWilliams's NPI number?
Dr. McWilliams's National Provider Identifier is 1487633962. 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
Where did Dr. McWilliams go to medical school?
Dr. McWilliams attended George Washington University School of Medicine, graduating in 1997. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. McWilliams been practising?
Dr. McWilliams has 29 years experience. Calculated from a graduation year of 1997, reported in the CMS National Downloadable File.
CMS public data
What does Dr. McWilliams do most often?
According to Medicare billing data, Dr. McWilliams provides treatments such as injection of additional new drug or substance into vein and administration of chemotherapy into vein, 1 hour or less, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. McWilliams confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. McWilliams. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (309) 655-2000
- Email not available
Practice Locations
530 NE GLEN OAK AVE
Peoria, IL 61637
Procedures Most Often Billed to Medicare
11,358 services · 637 patients · 25 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Injection of additional new drug or substance into vein | Treatment | 96375 |
131 |
| Administration of chemotherapy into vein, 1 hour or less | Treatment | 96413 |
97 |
| Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle | Treatment | 96401 |
34 |
| Administration of chemotherapy into vein, each additional hour | Treatment | 96415 |
31 |
| Administration of additional new drug or substance into vein, 1 hour or less | Treatment | 96417 |
28 |
| Administration of hormonal anti-neoplastic chemotherapy under skin or into muscle | Treatment | 96402 |
15 |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
15 |
| Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less | Treatment | 96367 |
15 |
| Injection, nivolumab, 1 mg | Drug given | J9299 |
3,600 |
| Injection, pembrolizumab, 1 mg | Drug given | J9271 |
3,202 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other medical oncology specialists in Peoria 2
Same specialty, same city.
Trained at George Washington University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1997 at George Washington University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Injection of additional new drug or substance into vein 8
Providers in IL who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.