2026 NPPES data Rheumatology Physician NPI 1316927072 MD
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Larry Greenbaum, MD

Rheumatology Physician in Greenwood, Indiana. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 6,181 in Rheumatology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
6K
Medicare Part D claims · 619 beneficiaries · Rheumatology Physician avg: 2K
Generic prescribing
88%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$85.61
4 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Larry Greenbaum, MD filed 5,861 Medicare Part D claims in 2023 as a Rheumatology Physician in Greenwood, Indiana, prescribing 88% generic.

6K
Part D claims, 2023
88%
generic prescribing
Likely
board-certified (heuristic)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.

Larry Greenbaum, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023, across all CMS prescribers nationally

5,861 Top 5% higher than 95% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2K+: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board certification likely (heuristic, not verified)

Larry Greenbaum, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about Larry Greenbaum, MD?

Quality data not reported

NPI registry status

Active

Issued 01/19/2006

NPI 1316927072

Primary specialty

Rheumatology Physician

Mid-sized

6,181 US NPIs in this specialty

Medicare Part D claims

5,861 185% vs specialty avg

2023 prescription claims

Specialty avg: 2,054

Specialty distribution in Indiana

How Rheumatology Physician compares to other specialties among Indiana providers

Indiana providers

Largest specialties in Indiana (% of in-state providers)

Behavior Technician - 13.6%Behavior Technician13.6%Student in an Organized Health Care Education/Training Program - 4.7%Student in an Organized Health Care Education/Training Program4.7%Pharmacist - 4.3%Pharmacist4.3%Family Nurse Practitioner - 4.2%Family Nurse Practitioner4.2%Clinical Social Worker - 4.2%Clinical Social Worker4.2%Mental Health Counselor - 4.1%Mental Health Counselor4.1%Rheumatology Physician - 0.1%Rheumatology Physician0.1%
Largest specialties in Indiana (% of in-state providers)

Board certification

Not published by CMS

CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Rheumatology Physician. Verify directly:

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

Larry Greenbaum, MD appears in the CMS NPPES registry as a Rheumatology Physician provider holding MD credentials at 701 E COUNTY LINE RD, Greenwood, IN, 46143, with a listed phone of (317) 885-2860. NPI 1316927072 was issued on 01/19/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Greenbaum most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 5,861 prescription claims written by this provider, covering 619 Medicare beneficiaries and totaling roughly $2.6 million in drug spend, split 11% brand-name and 88% generic by claim count, with an opioid prescribing rate of 19.1%. These figures capture only Medicare Part D, commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Rheumatology Physician is a mid-sized specialty nationwide, with 6,181 enrolled providers across 52 states and an average of 2,054 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

701 E COUNTY LINE RD
Greenwood, IN 46143

Provider Details

NPI 1316927072
Specialty Rheumatology Physician
Credentials MD
Gender Male
NPI Issued 01/19/2006

Hospital and facility affiliations

Facilities where Larry Greenbaum, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

Indiana Internal Medicine Consultants LLC
Greenwood, IN
St Francis Medical Group LLC
Greenwood, IN

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Industry payments received (2024) - CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Larry Greenbaum, MD. Source: openpaymentsdata.cms.gov.

Total received

$86

Largest payer

ABBVIE INC.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Typical

Larry Greenbaum, MD - brand share 11.0%
Rheumatology Physician average

11% brand-name claims vs 88% generic, on 5,861 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

5,861
Total Claims
$2.6M
Total Drug Cost
619
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
11,495
Total Day Supply
339,321
Brand vs Generic
11% brand / 88% generic
Brand Drug Cost
$2.5M
Generic Drug Cost
$184K
Opioid Claims
1,122 (19.1% rate)
Antibiotic Claims
14

Patient Demographics

Average Patient Age
71.9 years
Avg HCC Risk Score
1.53
Gender Split
68% female / 32% male
Age Distribution
<65: 93, 65-74: 288, 75-84: 190, 85+: 48

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What Larry Greenbaum, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Methotrexate
Methotrexate Sodium
781
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
577
Hydroxychloroquine Sulfate
384
Tramadol Hcl
264
Prednisone
256
Sulfasalazine
223
Pregabalin
190
Folic Acid
182
Gabapentin
174
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
157

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Rheumatology Physician Overview

How Larry Greenbaum, MD fits within the Rheumatology Physician landscape nationally.

6,181
Rheumatology Physician Providers in US
52
States with Rheumatology Physician
2,054
Avg Claims per Provider

Larry Greenbaum, MD's 5,861 claims are above the specialty average of 2,054.

Nearby Rheumatology Physician Providers in Indiana

Other clinicians with the same primary specialty enrolled in Indiana, drawn from the same CMS NPPES roster as Greenbaum.

Compare Rheumatology Physician nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the Indiana medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Rheumatology Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Larry Greenbaum, MD's specialty?
Larry Greenbaum, MD specializes in Rheumatology Physician and practices in Greenwood, Indiana. Credentials: MD.
How much does Larry Greenbaum, MD prescribe under Medicare Part D?
In 2023, Larry Greenbaum, MD wrote 5,861 Medicare Part D claims totaling $2.6M in drug costs for 619 beneficiaries.
Where is Larry Greenbaum, MD located?
Larry Greenbaum, MD is located at 701 E COUNTY LINE RD, Greenwood, IN, 46143. Phone: (317) 885-2860.
What is Larry Greenbaum, MD's NPI number?
Larry Greenbaum, MD's National Provider Identifier (NPI) is 1316927072, issued on 01/19/2006.
Does Larry Greenbaum, MD prescribe more brand-name or generic drugs?
Larry Greenbaum, MD's prescribing is 11% brand-name and 88% generic drugs by claim count, with $2.5M in brand drug costs.
Does Larry Greenbaum, MD prescribe opioids?
Yes, Larry Greenbaum, MD had 1,122 opioid claims in 2023 with an opioid prescribing rate of 19.1%.
How many Rheumatology Physician providers are there in the US?
There are 6,181 Rheumatology Physician providers across 52 states in the US. The average Rheumatology Physician provider writes 2,054 Medicare Part D claims per year.
What drugs does Larry Greenbaum, MD prescribe most often?
Based on 2023 Medicare Part D data, Larry Greenbaum, MD's most frequently prescribed drugs include Methotrexate, Hydrocodone-Acetaminophen, Hydroxychloroquine Sulfate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Larry Greenbaum, MD accept Medicare?
Larry Greenbaum, MD appears in CMS Medicare data with 5,861 Part D claims and 619 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Larry Greenbaum, MD's credentials?
Larry Greenbaum, MD's NPI is 1316927072 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology

Compiled from official public sources by the PlainDoctor editorial team.