Maureen Morgan O'Connor, MD
NPI 1558460337 · Endocrinology, Diabetes & Metabolism Physician · Bourbonnais, IL
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maureen Morgan O'Connor, MD is a Endocrinology, Diabetes & Metabolism Physician provider in Bourbonnais, IL (NPI 1558460337).
Provider details
- NPI number
- 1558460337
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 036097969 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
1,230 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 397 | $120 |
| Hemoglobin A1c Level83036 | 227 | $9 |
| Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Interpretation and Report95251 | 186 | $32 |
| 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 | 172 | $16 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 167 | $87 |
| Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Provider Supplied Equipment |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 44 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 667 | 125 |
| Atorvastatin Calcium | 136 | 38 |
| Levothyroxine Sodiumbrand: Synthroid | 113 | 19 |
| Metformin Hcl | 103 | 30 |
| Glimepiride | 101 | 29 |
| Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar | 89 | 30 |
| Semaglutide |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$127 across 7 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
- 2006-09-21
- Last updated
- 2008-01-22
Frequently asked questions
- What is Maureen Morgan O'Connor's NPI number?
- Maureen Morgan O'Connor's National Provider Identifier (NPI) is 1558460337, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maureen Morgan O'Connor's specialty?
- Maureen Morgan O'Connor is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Maureen Morgan O'Connor located?
- Maureen Morgan O'Connor's practice location on file with NPPES is 338 Larry Power Rd, Bourbonnais, IL 60914-4430.
- What is Maureen Morgan O'Connor's phone number?
- The practice phone number listed in the NPPES registry for Maureen Morgan O'Connor is (815) 936-8909.
- Does Maureen Morgan O'Connor accept Medicare?
- Maureen Morgan O'Connor is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maureen Morgan O'Connor's NPI active?
- Yes — Maureen Morgan O'Connor's NPI (1558460337) is active in the NPPES registry as of the last update on 2008-01-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.