Physician Profile
Unclaimed ProfileAbout HILLYER
Based in Warren, MI, Robert E Hillyer, MD is listed in the NPI registry under internal medicine. Robert graduated from University of Oklahoma College of Medicine in 1980. Robert is also listed as specializing in nephrology. According to Medicare claims data, Robert cared for 497 Medicare patients across 1,180 services.
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
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (586) 558-9033
- Email not available
Practice Locations
11900 TWELVE MILE ROAD SUITE 200
Warren, MI 48093
Procedures Most Often Billed to Medicare
1,180 services · 497 patients · 12 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Dialysis services, 4 or more physician visits per month (20 years or older) | Treatment | 90960 |
75 |
| Dialysis services, 2-3 physician visits per month (20 years or older) | Treatment | 90961 |
37 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
623 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
89 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
71 |
| Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | Office visit | 99221 |
66 |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
60 |
| Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | Office visit | 99231 |
49 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
44 |
| Complex chronic care management services for two or more chronic conditions, each additional 60 minutes of clinical staff time directed by health care professional, per calendar month | Office visit | 99489 |
26 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internal medicines at this location 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 3
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 32 related providers in 4 groups
Other internal medicines in Warren 8
Same specialty, same city.
Trained at University of Oklahoma College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1980 at University of Oklahoma College of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Dialysis services, 4 or more physician visits per month (20 years or older) 8
Providers in MI who bill this service to Medicare most often.
Common questions
What is Dr. Hillyer's specialty?
Dr. Hillyer is an internal medicine in Warren, MI. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
Where can I find Dr. Hillyer?
Dr. Hillyer is listed at 11900 TWELVE MILE ROAD SUITE 200, Warren, MI 48093. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Hillyer?
The number on file is (586) 558-9033. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Hillyer's NPI number?
Dr. Hillyer's National Provider Identifier is 1760595060. 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
What is Dr. Hillyer's medical education?
Dr. Hillyer attended University of Oklahoma College of Medicine, graduating in 1980. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Hillyer been practicing?
Dr. Hillyer has 46 years experience. Calculated from a graduation year of 1980, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Hillyer known for?
According to Medicare billing data, Dr. Hillyer provides treatments such as dialysis services, 4 or more physician visits per month and dialysis services, 2-3 physician visits per month, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Hillyer confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Hillyer. If this is you, claiming it is free.
Guide.md
Is this your profile?
Verify your identity to control how patients — and AI assistants — describe you.
Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.