Catherine Koop, M.D.
NPI 1851358972 · Internal Medicine Physician · Oak Park, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Catherine Koop, M.D. is a Internal Medicine Physician provider in Oak Park, IL (NPI 1851358972).
Provider details
- NPI number
- 1851358972
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 036096959 (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 tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,084 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 310 | $132 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 178 | $133 |
| 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 | 178 | $17 |
| Advance Care Planning, First 30 Minutes99497 | 157 | $85 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 102 | $187 |
| Administration of a Standardized, Evidence-Based Social Determinants of Health Risk Assessment Tool, 5-15 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 69 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 217 | 61 |
| Amlodipine Besylate | 209 | 63 |
| Levothyroxine Sodium | 175 | 45 |
| Simvastatin | 128 | 34 |
| Escitalopram Oxalate | 104 | 25 |
| Hydrochlorothiazide | 98 | 30 |
| Rosuvastatin Calcium | 83 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-01
- Last updated
- 2022-07-21
Frequently asked questions
- What is Catherine Koop's NPI number?
- Catherine Koop's National Provider Identifier (NPI) is 1851358972, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Catherine Koop's specialty?
- Catherine Koop is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Catherine Koop located?
- Catherine Koop's practice location on file with NPPES is 610 S. Maple, Oak Park, IL 60304.
- What is Catherine Koop's phone number?
- The practice phone number listed in the NPPES registry for Catherine Koop is (708) 660-2240.
- Does Catherine Koop accept Medicare?
- Catherine Koop is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Catherine Koop's NPI active?
- Yes — Catherine Koop's NPI (1851358972) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.