Aditee Grewal, MD
NPI 1821344730 · Emergency Medicine Physician · Oknard, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Aditee Grewal, MD is a Emergency Medicine Physician provider in Oknard, CA (NPI 1821344730).
Provider details
- NPI number
- 1821344730
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 4301101199 (MI)
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 tenure28% of score
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
760 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 291 | $182 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 242 | $9 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 150 | $126 |
| Critical Care, First 30-74 Minutes99291 | 77 | $224 |
Typical Medicare-allowed amounts for these services range $9–$224 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 47 | 46 |
| Tramadol Hcl | 46 | 46 |
| Ondansetronbrand: Ondansetron Odt | 31 | 31 |
| Prednisone | 24 | 23 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 23 | 23 |
| Famotidine | 14 | 14 |
| Ciprofloxacin Hcl | 13 | 13 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-07-29
- Last updated
- 2022-12-08
- Certified
- 2022-12-08
Frequently asked questions
- What is Aditee Grewal's NPI number?
- Aditee Grewal's National Provider Identifier (NPI) is 1821344730, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Aditee Grewal's specialty?
- Aditee Grewal is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Aditee Grewal located?
- Aditee Grewal's practice location on file with NPPES is St Johns Regional Medical Center, Oknard, CA 93036.
- What is Aditee Grewal's phone number?
- The practice phone number listed in the NPPES registry for Aditee Grewal is (805) 988-2500.
- Does Aditee Grewal accept Medicare?
- Aditee Grewal is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Aditee Grewal's NPI active?
- Yes — Aditee Grewal's NPI (1821344730) is active in the NPPES registry as of the last update on 2022-12-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.