George Grossberg, MD
NPI 1033135991 · Psychiatry Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
George Grossberg, MD is a Psychiatry Physician provider in Saint Louis, MO (NPI 1033135991).
Provider details
- NPI number
- 1033135991
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- R6957 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
384 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 258 | $123 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 35 | $106 |
| Psychiatric Diagnostic Evaluation With Medical Services90792 | 24 | $193 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 22 | $106 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 18 | $88 |
| Assessment of Emotional Or Behavioral Problems96127 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 39 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Memantine Hcl | 172 | 34 |
| Trazodone Hcl | 169 | 44 |
| Sertraline Hcl | 163 | 29 |
| Quetiapine Fumarate | 135 | 31 |
| Rivastigmine | 115 | 22 |
| Clonazepam | 100 | 19 |
| Mirtazapine | 100 | 20 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$163,572 across 124 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-14
- Last updated
- 2021-01-12
- Certified
- 2021-01-12
Frequently asked questions
- What is George Grossberg's NPI number?
- George Grossberg's National Provider Identifier (NPI) is 1033135991, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is George Grossberg's specialty?
- George Grossberg is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is George Grossberg located?
- George Grossberg's practice location on file with NPPES is 1438 S Grand Blvd, Saint Louis, MO 63104-1027.
- What is George Grossberg's phone number?
- The practice phone number listed in the NPPES registry for George Grossberg is (314) 977-4829.
- Does George Grossberg accept Medicare?
- George Grossberg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is George Grossberg's NPI active?
- Yes — George Grossberg's NPI (1033135991) is active in the NPPES registry as of the last update on 2021-01-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.