William Grillo, PA-C
NPI 1497413710 · Physician Assistant · Duluth, MN
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Grillo, PA-C is a Physician Assistant provider in Duluth, MN (NPI 1497413710).
Provider details
- NPI number
- 1497413710
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
- License
- 13889 (MN)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
4 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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 91 | 76 |
| Ondansetronbrand: Ondansetron Odt | 71 | 70 |
| Hydromorphone Hcl | 67 | 50 |
| Celecoxib | 49 | 42 |
| Cefadroxil | 46 | 45 |
| Hydroxyzine Hcl | 23 | 22 |
| Cephalexin | 18 | 13 |
| Meloxicam | 11 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$615 across 13 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
- 2021-12-03
- Last updated
- 2023-11-21
- Certified
- 2023-11-21
Frequently asked questions
- What is William Grillo's NPI number?
- William Grillo's National Provider Identifier (NPI) is 1497413710, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Grillo's specialty?
- William Grillo is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is William Grillo located?
- William Grillo's practice location on file with NPPES is 400 E 3rd St, Duluth, MN 55805-1951.
- What is William Grillo's phone number?
- The practice phone number listed in the NPPES registry for William Grillo is (218) 786-8364.
- Does William Grillo accept Medicare?
- William Grillo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Grillo's NPI active?
- Yes — William Grillo's NPI (1497413710) is active in the NPPES registry as of the last update on 2023-11-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.