Catherine Johnson, MD FACEP, ABOM, MSCP
NPI 1083609218 · Obesity Medicine (Preventive Medicine) Physician · Clarendon Hills, IL
Catherine Johnson, MD FACEP, ABOM, MSCP is a Obesity Medicine (Preventive Medicine) Physician provider in Clarendon Hills, IL (NPI 1083609218).
Provider details
- NPI number
- 1083609218
- Entity type
- Individual
- Primary specialty
- Obesity Medicine (Preventive Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD FACEP, ABOM, MSCP
- Sex
- Female
- Sole proprietor
- No
- License
- 01056490 (IN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
3 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tirzepatidebrand: Mounjaro | 71 | 12 |
| Metformin Hclbrand: Metformin Hcl Er | 37 | 16 |
| Levothyroxine Sodium | 23 | — |
| Progesterone, Micronizedbrand: Progesterone | 22 | — |
| Allopurinol | 21 | — |
| Evolocumabbrand: Repatha Sureclick | 20 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$35 across 2 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
Additional practice locations (2)
- 365 Fifth Ave S Ste 220Naples, FL 34102-6575Phone: (312) 343-4342Fax: (312) 736-9556
- 215 N Peoria StChicago, IL 60607-1754Phone: (312) 343-4342Fax: (312) 736-9556
Registry dates
- Enumerated
- 2005-09-14
- Last updated
- 2025-04-14
- Certified
- 2025-04-14
Frequently asked questions
- What is Catherine Johnson's NPI number?
- Catherine Johnson's National Provider Identifier (NPI) is 1083609218, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Catherine Johnson's specialty?
- Catherine Johnson is listed in the NPPES registry with a primary specialty of Obesity Medicine (Preventive Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Catherine Johnson located?
- Catherine Johnson's practice location on file with NPPES is 23 Walker Ave, Clarendon Hills, IL 60514-1338.
- What is Catherine Johnson's phone number?
- The practice phone number listed in the NPPES registry for Catherine Johnson is (312) 343-4342.
- Is Catherine Johnson's NPI active?
- Yes — Catherine Johnson's NPI (1083609218) is active in the NPPES registry as of the last update on 2025-04-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.