What is Ronald Kallen's NPI number?

Ronald Kallen's National Provider Identifier (NPI) is 1245283647, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Ronald Kallen's specialty?

Ronald Kallen is listed in the NPPES registry with a primary specialty of Pediatric Nephrology Physician (Allopathic & Osteopathic Physicians).

Where is Ronald Kallen located?

Ronald Kallen's practice location on file with NPPES is 2300 N Childrens Plz, Chicago, IL 60614-3363.

What is Ronald Kallen's phone number?

The practice phone number listed in the NPPES registry for Ronald Kallen is (847) 433-3345.

Does Ronald Kallen accept Medicare?

Ronald Kallen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Ronald Kallen's NPI active?

Yes — Ronald Kallen's NPI (1245283647) is active in the NPPES registry as of the last update on 2010-12-13.

IndividualActiveAccepts Medicare

Ronald Kallen, MD

NPI 1245283647 · Pediatric Nephrology Physician · Chicago, IL

Ronald Kallen, MD is a Pediatric Nephrology Physician provider in Chicago, IL (NPI 1245283647).

Provider details

NPI number: 1245283647
Entity type: Individual
Primary specialty: Pediatric Nephrology PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: Yes
License: 03643026 (IL)

Practice location

2300 N Childrens Plz

Chicago, IL 60614-3363

Phone: (847) 433-3345

Fax: (847) 433-4426

Approximate (ZIP-level) locationGet directions

More IL providers

Mailing address

353 Lakeside Pl

Highland Park, IL 60035-5371

Specialties & taxonomies

Pediatric Nephrology PhysicianPrimary2080P0210XLicense 03643026 (IL)
Allopathic & Osteopathic Physicians

Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(91/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
20 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.

Enumerated: 2006-05-18
Last updated: 2010-12-13

Frequently asked questions

What is Ronald Kallen's NPI number?: Ronald Kallen's National Provider Identifier (NPI) is 1245283647, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Ronald Kallen's specialty?: Ronald Kallen is listed in the NPPES registry with a primary specialty of Pediatric Nephrology Physician (Allopathic & Osteopathic Physicians).
Where is Ronald Kallen located?: Ronald Kallen's practice location on file with NPPES is 2300 N Childrens Plz, Chicago, IL 60614-3363.
What is Ronald Kallen's phone number?: The practice phone number listed in the NPPES registry for Ronald Kallen is (847) 433-3345.
Does Ronald Kallen accept Medicare?: Ronald Kallen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Ronald Kallen's NPI active?: Yes — Ronald Kallen's NPI (1245283647) is active in the NPPES registry as of the last update on 2010-12-13.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions