Daniel Klarr, MD
NPI 1518427400 · Internal Medicine Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Daniel Klarr, MD is a Internal Medicine Physician provider in Chicago, IL (NPI 1518427400).
Provider details
- NPI number
- 1518427400
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 125.073901 (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
7 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
367 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 206 | $130 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 49 | $189 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 42 | $89 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 37 | $84 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 22 | $144 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 11 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-03-25
- Last updated
- 2022-10-11
- Certified
- 2022-10-11
Frequently asked questions
- What is Daniel Klarr's NPI number?
- Daniel Klarr's National Provider Identifier (NPI) is 1518427400, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Daniel Klarr's specialty?
- Daniel Klarr is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Daniel Klarr located?
- Daniel Klarr's practice location on file with NPPES is 5841 S Maryland Ave, Chicago, IL 60637-1443.
- What is Daniel Klarr's phone number?
- The practice phone number listed in the NPPES registry for Daniel Klarr is (773) 702-1000.
- Does Daniel Klarr accept Medicare?
- Daniel Klarr is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Daniel Klarr's NPI active?
- Yes — Daniel Klarr's NPI (1518427400) is active in the NPPES registry as of the last update on 2022-10-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.