Roger Billhardt, MD
NPI 1265515837 · Cardiovascular Disease Physician · Chicago, IL
Roger Billhardt, MD is a Cardiovascular Disease Physician provider in Chicago, IL (NPI 1265515837).
Provider details
- NPI number
- 1265515837
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 3653546 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-24
- Last updated
- 2007-09-28
Frequently asked questions
- What is Roger Billhardt's NPI number?
- Roger Billhardt's National Provider Identifier (NPI) is 1265515837, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Roger Billhardt's specialty?
- Roger Billhardt is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Roger Billhardt located?
- Roger Billhardt's practice location on file with NPPES is 1725 W Harrison, Chicago, IL 60612.
- What is Roger Billhardt's phone number?
- The practice phone number listed in the NPPES registry for Roger Billhardt is (312) 563-3233.
- Is Roger Billhardt's NPI active?
- Yes — Roger Billhardt's NPI (1265515837) is active in the NPPES registry as of the last update on 2007-09-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.