William Dagiantis, MD
NPI 1972511822 · Internal Medicine Physician · Aurora, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Dagiantis, MD is a Internal Medicine Physician provider in Aurora, IL (NPI 1972511822).
Provider details
- NPI number
- 1972511822
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036093987 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 46 | 20 |
| Donepezil Hcl | 25 | — |
| Metformin Hclbrand: Metformin Hcl Er | 15 | — |
| Metoprolol Succinate | 14 | — |
| Lisinopril | 13 | 11 |
| Fluoxetine Hcl | 13 | — |
| Famotidine | 13 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-04
- Last updated
- 2021-11-22
- Certified
- 2021-11-22
Frequently asked questions
- What is William Dagiantis's NPI number?
- William Dagiantis's National Provider Identifier (NPI) is 1972511822, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Dagiantis's specialty?
- William Dagiantis is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Dagiantis located?
- William Dagiantis's practice location on file with NPPES is 2285 Sequoia Dr, Aurora, IL 60506-6209.
- What is William Dagiantis's phone number?
- The practice phone number listed in the NPPES registry for William Dagiantis is (630) 859-6700.
- Does William Dagiantis accept Medicare?
- William Dagiantis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Dagiantis's NPI active?
- Yes — William Dagiantis's NPI (1972511822) is active in the NPPES registry as of the last update on 2021-11-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.