NPI registry status
Active
2026 NPPES data Geriatric Psychiatry Physician NPI 1033135991 MD
Verify on CMS → George Grossberg, MD
Geriatric Psychiatry Physician in Saint Louis, Missouri.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 787 in Geriatric 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
3K
Medicare Part D claims · 254 beneficiaries · Geriatric Psychiatry Physician avg: 2K
MIPS score
88.9/100
▲ 6 pts above national avg 83.1 · Above neutral
Industry payments
$163.6K
124 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
George Grossberg, MD reported a CMS MIPS final score of 88.9/100 - above the 83.1 national average - and filed 2,954 Medicare Part D claims in 2023.
- 88.9/100
- MIPS score · +6 vs avg
- 3K
- Part D claims, 2023
- 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.
George Grossberg, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
89 Top 44% higher than 56% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where George Grossberg, MD sits
This provider among geriatric psychiatry physician peers
Across the 114 geriatric psychiatry physician providers who report both Medicare Part D prescribing and a MIPS quality score, George Grossberg, MD writes more Part D claims than 79% of them and scores higher on MIPS quality than 54% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one geriatric psychiatry physician peer from a representative sample of 60; the gold marker is George Grossberg, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
George Grossberg, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - 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 George Grossberg, MD?
High performer (top quartile)Primary specialty
Geriatric Psychiatry Physician
Medicare Part D claims
2,954 86% vs specialty avg
MIPS final score
88.9/100 5.8 pts vs avg
Specialty distribution in Missouri
How Geriatric Psychiatry Physician compares to other specialties among Missouri providers
Medicare quality performance, MIPS
George Grossberg, MD's 2023 MIPS final score plotted against the Geriatric Psychiatry Physician national average
- MIPS Final Score
- 88.9/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Geriatric Psychiatry Physician) - 88.9/100 vs national avg 83.1
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).
George Grossberg, MD appears in the CMS NPPES registry as a Geriatric Psychiatry Physician provider holding MD credentials at 1438 S GRAND BLVD, Saint Louis, MO, 63104, with a listed phone of (314) 977-4829. NPI 1033135991 was issued on 07/14/2006.
Medicare Part D records for calendar year 2023 show 2,954 prescription claims written by this provider, covering 254 Medicare beneficiaries and totaling roughly $446K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 88.9/100 for the 2023 performance year (Quality 84.7, Cost 45), compared with the national average of 83.1.
Geriatric Psychiatry Physician is a narrow specialty nationwide, with 787 enrolled providers across 46 states and an average of 1,586 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 | 1033135991 |
|---|---|
| Specialty | Geriatric Psychiatry Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/14/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
88.9211
Final Score
Avg: 83.1
84.7241
Quality
45.013
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where George Grossberg, 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.
Ssm Health Care Group
Saint Louis, MO
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 George Grossberg, MD. Source: openpaymentsdata.cms.gov.
Total received
$163.6K
Largest payer
Otsuka Pharmaceutical Co., Ltd.
Most common payment type
Travel and Lodging
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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
2,954
Total Claims
$446K
Total Drug Cost
254
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,293
- Total Day Supply
- 125,268
- Generic Drug Cost
- $190K
Patient Demographics
- Average Patient Age
- 77.7 years
- Avg HCC Risk Score
- 1.97
- Gender Split
- 60% female / 40% male
- Age Distribution
- <65: 14, 65-74: 79, 75-84: 103, 85+: 58
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What George Grossberg, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Trazodone Hcl
Trazodone Hcl
225 claims
- Memantine Hcl
Memantine Hcl
163 claims
- Sertraline Hcl
Sertraline Hcl
157 claims
- Quetiapine Fumarate
Quetiapine Fumarate
149 claims
- Rivastigmine
Rivastigmine
140 claims
- Mirtazapine
Mirtazapine
125 claims
- Clonazepam
Clonazepam
112 claims
- Methylphenidate Hcl
Methylphenidate Hcl
109 claims
| Drug | Claims |
|---|---|
| Trazodone Hcl | 225 |
| Memantine Hcl | 163 |
| Sertraline Hcl | 157 |
| Quetiapine Fumarate | 149 |
| Rivastigmine | 140 |
| Mirtazapine | 125 |
| Clonazepam | 112 |
| Methylphenidate Hcl | 109 |
| Duloxetine Hcl | 107 |
| Escitalopram Oxalate | 106 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Geriatric Psychiatry Physician Overview
How George Grossberg, MD fits within the Geriatric Psychiatry Physician landscape nationally.
787
Geriatric Psychiatry Physician Providers in US
46
States with Geriatric Psychiatry Physician
1,586
Avg Claims per Provider
George Grossberg, MD's 2,954 claims are above the specialty average of 1,586.
Nearby Geriatric Psychiatry Physician Providers in Missouri
Other clinicians with the same primary specialty enrolled in Missouri, drawn from the same CMS NPPES roster as Grossberg.
Dr. Sameer Arain
MD
Saint Louis, MO
Dr. Vadim Baram
MD
Saint Louis, MO
Dr. Nezar El-Ruwie
M.D.
Saint Louis, MO
Dr. Dilip Gogineni
M.D.
Poplar Bluff, MO
Dr. Pratibha Gurusiddaiya
M.D
Saint Louis, MO
Compare Geriatric 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 Missouri medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Geriatric 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Missouri
Frequently Asked Questions
What is George Grossberg, MD's specialty? ▼
George Grossberg, MD specializes in Geriatric Psychiatry Physician and practices in Saint Louis, Missouri. Credentials: MD.
How much does George Grossberg, MD prescribe under Medicare Part D? ▼
In 2023, George Grossberg, MD wrote 2,954 Medicare Part D claims totaling $446K in drug costs for 254 beneficiaries.
What is George Grossberg, MD's Medicare quality score? ▼
George Grossberg, MD has a CMS MIPS Final Score of 88.9/100 (Quality: 84.7, Cost: 45). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is George Grossberg, MD located? ▼
George Grossberg, MD is located at 1438 S GRAND BLVD, Saint Louis, MO, 63104. Phone: (314) 977-4829.
What is George Grossberg, MD's NPI number? ▼
George Grossberg, MD's National Provider Identifier (NPI) is 1033135991, issued on 07/14/2006.
How many Geriatric Psychiatry Physician providers are there in the US? ▼
There are 787 Geriatric Psychiatry Physician providers across 46 states in the US. The average Geriatric Psychiatry Physician provider writes 1,586 Medicare Part D claims per year.
What drugs does George Grossberg, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, George Grossberg, MD's most frequently prescribed drugs include Trazodone Hcl, Memantine Hcl, Sertraline Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does George Grossberg, MD accept Medicare? ▼
George Grossberg, MD appears in CMS Medicare data with 2,954 Part D claims and 254 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify George Grossberg, MD's credentials? ▼
George Grossberg, MD's NPI is 1033135991 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.