Christopher Markelz, DO
NPI 1225831456 · Internal Medicine Physician · Park Ridge, IL
Christopher Markelz, DO is a Internal Medicine Physician provider in Park Ridge, IL (NPI 1225831456).
Provider details
- NPI number
- 1225831456
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr in NPPES registry
- Profile completeness38% of score
83% 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
- 2025-03-31
- Last updated
- 2025-06-16
- Certified
- 2025-06-16
Frequently asked questions
- What is Christopher Markelz's NPI number?
- Christopher Markelz's National Provider Identifier (NPI) is 1225831456, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Markelz's specialty?
- Christopher Markelz is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Christopher Markelz located?
- Christopher Markelz's practice location on file with NPPES is 1775 Ballard Rd, Park Ridge, IL 60068-1005.
- What is Christopher Markelz's phone number?
- The practice phone number listed in the NPPES registry for Christopher Markelz is (847) 318-9340.
- Is Christopher Markelz's NPI active?
- Yes — Christopher Markelz's NPI (1225831456) is active in the NPPES registry as of the last update on 2025-06-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.