Nora O'Byrne, MD
NPI 1073909826 · Endocrinology, Diabetes & Metabolism Physician · Merrionette Park, IL
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nora O'Byrne, MD is a Endocrinology, Diabetes & Metabolism Physician provider in Merrionette Park, IL (NPI 1073909826).
Provider details
- NPI number
- 1073909826
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 125066904 (IL)
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 tenure25% of score
11 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
546 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 231 | $114 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 103 | $130 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 67 | $8 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 48 | $16 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 25 | $127 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 40 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar | 156 | 45 |
| Semaglutidebrand: Ozempic | 133 | 33 |
| Levothyroxine Sodium | 126 | 41 |
| Atorvastatin Calcium | 116 | 33 |
| Metformin Hcl | 104 | 35 |
| Dulaglutidebrand: Trulicity | 69 | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$123 across 1 record (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
- 2015-04-08
- Last updated
- 2022-08-15
- Certified
- 2022-08-15
Frequently asked questions
- What is Nora O'Byrne's NPI number?
- Nora O'Byrne's National Provider Identifier (NPI) is 1073909826, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nora O'Byrne's specialty?
- Nora O'Byrne is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Nora O'Byrne located?
- Nora O'Byrne's practice location on file with NPPES is 11600 S Kedzie Ave Ste D, Merrionette Park, IL 60803-6307.
- What is Nora O'Byrne's phone number?
- The practice phone number listed in the NPPES registry for Nora O'Byrne is (708) 684-6867.
- Does Nora O'Byrne accept Medicare?
- Nora O'Byrne is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nora O'Byrne's NPI active?
- Yes — Nora O'Byrne's NPI (1073909826) is active in the NPPES registry as of the last update on 2022-08-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.