Jean Houlihan, MD
NPI 1952398885 · Internal Medicine Physician · Warrenville, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jean Houlihan, MD is a Internal Medicine Physician provider in Warrenville, IL (NPI 1952398885).
Provider details
- NPI number
- 1952398885
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 036085979 (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
20 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
642 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 115 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 93 | $131 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 74 | $91 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 58 | $13 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 47 | $10 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 46 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 74 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 397 | 124 |
| Levothyroxine Sodium | 320 | 88 |
| Amlodipine Besylate | 285 | 86 |
| Rosuvastatin Calcium | 196 | 56 |
| Metoprolol Succinate | 186 | 59 |
| Losartan Potassium | 183 | 50 |
| Lisinopril |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$21 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
- 2005-10-05
- Last updated
- 2022-06-14
- Certified
- 2022-06-14
Frequently asked questions
- What is Jean Houlihan's NPI number?
- Jean Houlihan's National Provider Identifier (NPI) is 1952398885, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jean Houlihan's specialty?
- Jean Houlihan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jean Houlihan located?
- Jean Houlihan's practice location on file with NPPES is 430 Warrenville Rd, Warrenville, IL 60532.
- What is Jean Houlihan's phone number?
- The practice phone number listed in the NPPES registry for Jean Houlihan is (630) 432-6180.
- Does Jean Houlihan accept Medicare?
- Jean Houlihan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jean Houlihan's NPI active?
- Yes — Jean Houlihan's NPI (1952398885) is active in the NPPES registry as of the last update on 2022-06-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.