Gurprakash Grewal, M.D.
NPI 1134343379 · Family Medicine Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gurprakash Grewal, M.D. is a Family Medicine Physician provider in Saint Louis, MO (NPI 1134343379).
Provider details
- NPI number
- 1134343379
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD36667 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 176 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 982 | 74 |
| Alprazolam | 437 | 44 |
| Gabapentin | 411 | 51 |
| Oxycodone Hcl | 319 | 26 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 269 | 35 |
| Promethazine Hcl | 248 | 43 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$410 across 6 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
- 2007-04-12
- Last updated
- 2007-07-08
Frequently asked questions
- What is Gurprakash Grewal's NPI number?
- Gurprakash Grewal's National Provider Identifier (NPI) is 1134343379, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gurprakash Grewal's specialty?
- Gurprakash Grewal is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gurprakash Grewal located?
- Gurprakash Grewal's practice location on file with NPPES is 3535 S Jefferson Ave, Saint Louis, MO 63118-3930.
- What is Gurprakash Grewal's phone number?
- The practice phone number listed in the NPPES registry for Gurprakash Grewal is (314) 772-5070.
- Does Gurprakash Grewal accept Medicare?
- Gurprakash Grewal is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gurprakash Grewal's NPI active?
- Yes — Gurprakash Grewal's NPI (1134343379) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.