Dayna Portnoy, NP
NPI 1265476345 · General Practice Registered Nurse · Wilmette, IL
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Dayna Portnoy, NP is a General Practice Registered Nurse provider in Wilmette, IL (NPI 1265476345).
Provider details
- NPI number
- 1265476345
- Entity type
- Individual
- Primary specialty
- General Practice Registered NurseNursing Service Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 041-265829 (IL)
Specialties & taxonomies
Nursing Service Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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 · 4 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Triamcinolone Acetonide | 15 |
| Prednisone | 14 |
| Gabapentin | 13 |
| Hydralazine Hcl | 12 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-16
- Last updated
- 2009-07-08
Frequently asked questions
- What is Dayna Portnoy's NPI number?
- Dayna Portnoy's National Provider Identifier (NPI) is 1265476345, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dayna Portnoy's specialty?
- Dayna Portnoy is listed in the NPPES registry with a primary specialty of General Practice Registered Nurse (Nursing Service Providers).
- Where is Dayna Portnoy located?
- Dayna Portnoy's practice location on file with NPPES is 1200 Central Ave, Wilmette, IL 60091-2654.
- What is Dayna Portnoy's phone number?
- The practice phone number listed in the NPPES registry for Dayna Portnoy is (847) 256-1705.
- Does Dayna Portnoy accept Medicare?
- Dayna Portnoy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Dayna Portnoy's NPI active?
- Yes — Dayna Portnoy's NPI (1265476345) is active in the NPPES registry as of the last update on 2009-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.