Sharon Grewal, MD
NPI 1831719624 · Internal Medicine Physician · Northridge, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sharon Grewal, MD is a Internal Medicine Physician provider in Northridge, CA (NPI 1831719624).
Provider details
- NPI number
- 1831719624
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD218612 (OR)
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
6 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
338 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 157 | $62 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 113 | $92 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 48 | $125 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 20 | $34 |
Typical Medicare-allowed amounts for these services range $34–$125 (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 · 65 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lisinopril | 106 | 36 |
| Atorvastatin Calcium | 93 | 37 |
| Amlodipine Besylate | 88 | 33 |
| Levothyroxine Sodium | 81 | 28 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 75 | 13 |
| Omeprazole | 73 | 26 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-04-21
- Last updated
- 2026-02-09
- Certified
- 2026-02-09
Frequently asked questions
- What is Sharon Grewal's NPI number?
- Sharon Grewal's National Provider Identifier (NPI) is 1831719624, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sharon Grewal's specialty?
- Sharon Grewal is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sharon Grewal located?
- Sharon Grewal's practice location on file with NPPES is 18546 Roscoe Blvd Ste 300, Northridge, CA 91324-5458.
- What is Sharon Grewal's phone number?
- The practice phone number listed in the NPPES registry for Sharon Grewal is (818) 886-4028.
- Does Sharon Grewal accept Medicare?
- Sharon Grewal is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sharon Grewal's NPI active?
- Yes — Sharon Grewal's NPI (1831719624) is active in the NPPES registry as of the last update on 2026-02-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.