NPI registry status
Active
2026 NPPES data Psychiatry Physician NPI 1598792970 MD
Verify on CMS → Michael Greenbaum, MD
Psychiatry Physician in Libertyville, Illinois.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 53,171 in Psychiatry 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
644
Medicare Part D claims · 36 beneficiaries · Psychiatry Physician avg: 1K
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$998.8
46 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Michael Greenbaum, MD filed 644 Medicare Part D claims in 2023 as a Psychiatry Physician in Libertyville, Illinois, prescribing 86% generic.
- 644
- Part D claims, 2023
- 86%
- generic prescribing
- $998.8
- industry payments (Sunshine Act)
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.
Michael Greenbaum, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
644 Top 31% higher than 69% of 1,370,886 prescribers
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-eligible specialty (heuristic, not verified)
Michael Greenbaum, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Michael Greenbaum, MD?
Quality data not reportedPrimary specialty
Psychiatry Physician
Medicare Part D claims
644 38% vs specialty avg
Specialty distribution in Illinois
How Psychiatry Physician compares to other specialties among Illinois 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 Psychiatry Physician. Verify directly:
How MIPS and board certification work
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).
Michael Greenbaum, MD appears in the CMS NPPES registry as a Psychiatry Physician provider holding MD credentials at 900 TECHNOLOGY WAY STE 320, Libertyville, IL, 60048, with a listed phone of (847) 680-2715. NPI 1598792970 was issued on 06/28/2006.
Medicare Part D records for calendar year 2023 show 644 prescription claims written by this provider, covering 36 Medicare beneficiaries and totaling roughly $112K in drug spend, split 14% brand-name and 86% generic by claim count.
Psychiatry Physician is a high-volume specialty nationwide, with 53,171 enrolled providers across 56 states and an average of 1,038 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
Provider Details
| NPI | 1598792970 |
|---|---|
| Specialty | Psychiatry Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 06/28/2006 |
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 Michael Greenbaum, MD. Source: openpaymentsdata.cms.gov.
Total received
$999
Largest payer
ITI, Inc. (d/b/a Intra-Cellular Therapies, 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.
License & disciplinary context - Illinois IDFPR 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~42K Illinois medical licensees in 2023 - they are NOT specific to Michael Greenbaum, MD. To verify Michael Greenbaum, MD's current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases
IDFPR publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Illinois disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Michael Greenbaum, MD - brand share 14.0%
Psychiatry Physician average
14% brand-name claims vs 86% generic, on 644 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.
644
Total Claims
$112K
Total Drug Cost
36
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,031
- Total Day Supply
- 30,367
- Brand vs Generic
- 14% brand / 86% generic
- Brand Drug Cost
- $79K
- Generic Drug Cost
- $33K
Patient Demographics
- Average Patient Age
- 63.4 years
- Avg HCC Risk Score
- 1.00
- Gender Split
- 56% female / 44% male
- Age Distribution
- <65: 11, 65-74: 19, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Michael Greenbaum, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Bupropion Xl
Bupropion Xl
64 claims
- Duloxetine Hcl
Duloxetine Hcl
41 claims
- Escitalopram Oxalate
Escitalopram Oxalate
38 claims
- Aripiprazole
Aripiprazole
31 claims
- Methylphenidate Hcl
Methylphenidate Hcl
30 claims
- Trintellix
Trintellix
30 claims
- Fluoxetine Hcl
Fluoxetine Hcl
29 claims
- Quetiapine Fumarate 25
Quetiapine Fumarate
25 claims
| Drug | Claims |
|---|---|
| Bupropion Xl Bupropion Hcl | 64 |
| Duloxetine Hcl | 41 |
| Escitalopram Oxalate | 38 |
| Aripiprazole | 31 |
| Methylphenidate Hcl | 30 |
| Trintellix Vortioxetine Hydrobromide | 30 |
| Fluoxetine Hcl | 29 |
| Quetiapine Fumarate | 25 |
| Clonazepam | 24 |
| Lorazepam | 23 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Psychiatry Physician Overview
How Michael Greenbaum, MD fits within the Psychiatry Physician landscape nationally.
53,171
Psychiatry Physician Providers in US
56
States with Psychiatry Physician
1,038
Avg Claims per Provider
Michael Greenbaum, MD's 644 claims are below the specialty average of 1,038.
Nearby Psychiatry Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Greenbaum.
Dr. Alexandra Aaronson
M.D.
Chicago, IL
Dr. Anthony Abadir
MD
Oak Park, IL
Dr. Jeff Abbott
M.D.
Chicago, IL
Kathryn Abbott
Chicago, IL
Dr. Gil Abelita
MD
Bloomington, IL
Compare Psychiatry 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 Illinois medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Psychiatry 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.
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Frequently Asked Questions
What is Michael Greenbaum, MD's specialty? ▼
Michael Greenbaum, MD specializes in Psychiatry Physician and practices in Libertyville, Illinois. Credentials: MD.
How much does Michael Greenbaum, MD prescribe under Medicare Part D? ▼
In 2023, Michael Greenbaum, MD wrote 644 Medicare Part D claims totaling $112K in drug costs for 36 beneficiaries.
Where is Michael Greenbaum, MD located? ▼
Michael Greenbaum, MD is located at 900 TECHNOLOGY WAY STE 320, Libertyville, IL, 60048. Phone: (847) 680-2715.
What is Michael Greenbaum, MD's NPI number? ▼
Michael Greenbaum, MD's National Provider Identifier (NPI) is 1598792970, issued on 06/28/2006.
Does Michael Greenbaum, MD prescribe more brand-name or generic drugs? ▼
Michael Greenbaum, MD's prescribing is 14% brand-name and 86% generic drugs by claim count, with $79K in brand drug costs.
How many Psychiatry Physician providers are there in the US? ▼
There are 53,171 Psychiatry Physician providers across 56 states in the US. The average Psychiatry Physician provider writes 1,038 Medicare Part D claims per year.
What drugs does Michael Greenbaum, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Michael Greenbaum, MD's most frequently prescribed drugs include Bupropion Xl, Duloxetine Hcl, Escitalopram Oxalate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Michael Greenbaum, MD accept Medicare? ▼
Michael Greenbaum, MD appears in CMS Medicare data with 644 Part D claims and 36 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Michael Greenbaum, MD's credentials? ▼
Michael Greenbaum, MD's NPI is 1598792970 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
View source datasets and methodology notes
- 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.