Dr. Larry M. Greenbaum, MD
Rheumatology (Rheumatology Physician)
- Medicare participating
At a glance
- Medical school
- State University of New York Downstate Medical Center (1984)
- Years since graduation
- 42
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 616
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 1984Medical school: State University of New York Downstate Medical Center
- 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Rheumatology Physician primary
IN license 01041115 -
Internal Medicine Physician
IN license 01041115
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Indiana University Health Indianapolis, IN
- Franciscan Health Indianapolis Indianapolis, IN
- Columbus Regional Hospital Columbus, IN
- Johnson Memorial Hospital Franklin, IN
- Schneck Medical Center Seymour, IN
Medical groups
- St Francis Medical Group LLC (110 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 616
- Services billed
- 5,837
- Patients’ average age
- 74
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 30-39 minutes | 426 | 232 |
| Insertion of needle into vein for collection of blood sample | 298 | 171 |
| Blood test, basic group of blood chemicals (calcium, total) | 282 | 166 |
| Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 278 | 165 |
| Liver function blood test panel | 268 | 154 |
| Red blood cell sedimentation rate, to detect inflammation, non-automated | 237 | 128 |
| Measurement c-reactive protein for detection of infection or inflammation | 237 | 129 |
| Established patient office or other outpatient visit, 20-29 minutes | 229 | 175 |
| X-ray of hand, minimum of 3 views | 80 | 80 |
| Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 64 | 14 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Methotrexate (methotrexate sodium) Other prescribers in Greenwood, IN | 826 |
| Hydrocodone-Acetaminophen (hydrocodone/acetaminophen) Other prescribers in Greenwood, IN | 550 |
| Hydroxychloroquine Sulfate Other prescribers in Greenwood, IN | 449 |
| Prednisone Other prescribers in Greenwood, IN | 271 |
| Tramadol Hcl Other prescribers in Greenwood, IN | 239 |
| Sulfasalazine Other prescribers in Greenwood, IN | 233 |
| Pregabalin Other prescribers in Greenwood, IN | 178 |
| Gabapentin Other prescribers in Greenwood, IN | 156 |
| Oxycodone-Acetaminophen (oxycodone hcl/acetaminophen) Other prescribers in Greenwood, IN | 147 |
| Meloxicam Other prescribers in Greenwood, IN | 136 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 2 companies reported 4 payments worth $1,712 in total to this clinician.
| Genentech, Inc. | $1,680 |
|---|---|
| E.r. Squibb & Sons, L.l.c. | $31.97 |
| Consulting Fee | $1,680 |
|---|---|
| Food and Beverage | $31.97 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Genentech, Inc. Jul 7, 2025 | Consulting Fee Gazyva · BioOncology | $840 |
| Genentech, Inc. Jul 7, 2025 | Consulting Fee PiaSky · Hematology | $840 |
Each payment as the company reported it, with the products it named. Meals are counted in the totals above but not listed one by one.
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.