William Grella, MD
NPI 1568497824 · Internal Medicine Physician · Wayne, NJ
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Grella, MD is a Internal Medicine Physician provider in Wayne, NJ (NPI 1568497824).
Provider details
- NPI number
- 1568497824
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 25MA07304300 (NJ)
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
19 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
8,451 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 4,651 | $125 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 1,294 | $84 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 1,276 | $80 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 470 | $183 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 316 | $116 |
| Initial Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, 50 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 181 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 485 | 91 |
| Atorvastatin Calcium | 467 | 87 |
| Apixabanbrand: Eliquis | 467 | 60 |
| Albuterol Sulfate | 303 | 38 |
| Ipratropium/Albuterol Sulfatebrand: Ipratropium-Albuterol | 287 | 46 |
| Gabapentin | 282 | 49 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-12
- Last updated
- 2013-12-03
Frequently asked questions
- What is William Grella's NPI number?
- William Grella's National Provider Identifier (NPI) is 1568497824, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Grella's specialty?
- William Grella is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Grella located?
- William Grella's practice location on file with NPPES is 224 Hamburg Tpke, Wayne, NJ 07470-2111.
- What is William Grella's phone number?
- The practice phone number listed in the NPPES registry for William Grella is (973) 956-3357.
- Does William Grella accept Medicare?
- William Grella is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Grella's NPI active?
- Yes — William Grella's NPI (1568497824) is active in the NPPES registry as of the last update on 2013-12-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.