2026 NPPES data Geriatric Psychiatry Physician NPI 1033135991 MD
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GEORGE GROSSBERG, MD

Geriatric Psychiatry Physician in SAINT LOUIS, Missouri. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
3K
Medicare Part D claims · 254 beneficiaries · Geriatric Psychiatry Physician avg: 2K
MIPS score
88.9211/100
▲ 6 pts above national avg 83.1 · [object Object]
Industry payments
$163.6K
124 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

GEORGE GROSSBERG, MD reported a CMS MIPS final score of 88.9211/100 — above the 83.1 national average — and filed 2,954 Medicare Part D claims in 2023.

88.9211/100
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

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). This entry sits in this band. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

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

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)

NPI registry status

Active

Issued 07/14/2006

NPI 1033135991

Primary specialty

Geriatric Psychiatry Physician

Niche

785 US NPIs in this specialty

Medicare Part D claims

2,954 86% vs specialty avg

2023 prescription claims

Specialty avg: 1,586

MIPS final score

88.9211/100 5.821100000000001% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Missouri

How Geriatric Psychiatry Physician compares to other specialties among Missouri providers

Missouri providers

Geriatric Psychiatry Physician share within Missouri

1. Geriatric Psychiatry Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Geriatric Psychiatry Physician share within Missouri

Medicare quality performance — MIPS

GEORGE GROSSBERG, MD's 2023 MIPS final score plotted against the Geriatric Psychiatry Physician national average

High performer (top quartile)
MIPS Final Score
88.9211/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Geriatric Psychiatry Physician) — 88.9211/100 vs national avg 83.1

0%100%National avg83%88.9%
MIPS final score (Geriatric Psychiatry Physician) — 88.9211/100 vs national avg 83.1

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. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GROSSBERG 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 2,954 prescription claims written by this provider, covering 254 Medicare beneficiaries and totaling roughly $446K in drug spend. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 88.9211/100 for the 2023 performance year (Quality 84.7241, Cost 45.013), compared with the national average of 83.1.

Geriatric Psychiatry Physician is a narrow specialty nationwide, with 785 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

1438 S GRAND BLVD
SAINT LOUIS, MO 63104

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

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
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.

785
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.

Compare Geriatric Psychiatry Physician nationally: see state-by-state distribution →

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 88.9211/100 (Quality: 84.7241, Cost: 45.013). 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 785 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

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