ALLAN J OLTHOFF DO SC
NPI 1003959933
Clinic/Center - Health Service in Deerfield, IL
About Allan J Olthoff Do Sc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALLAN J OLTHOFF DO SC (NPI 1003959933) is a healthcare organization registered as a health service in Deerfield, Illinois and active in the NPI registry since February 2007. The organization lists Allan J Olthoff, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Allan J Olthoff Do Sc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Allan J Olthoff Do Sc, which bills Medicare for the services this clinician delivers.
Clinician (1)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Allan J Olthoff Do Sc's NPI number?
The NPI number for Allan J Olthoff Do Sc is 1003959933. It was assigned to this organization in the NPPES registry on February 14, 2007.
Where is Allan J Olthoff Do Sc located?
Allan J Olthoff Do Sc is located at 400 Lake Cook Rd 200C, Deerfield, IL 60015. The listed phone number is (847) 267-0260.
What is Allan J Olthoff Do Sc's specialty?
The primary specialty registered for this NPI is Clinic/Center, specializing in Health Service, with taxonomy code 261QH0100X.
Is Allan J Olthoff Do Sc enrolled in Medicare?
Yes. Allan J Olthoff Do Sc is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Allan J Olthoff Do Sc?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Family Practice) reassigns their Medicare billing to Allan J Olthoff Do Sc. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Allan J Olthoff Do Sc was last updated on July 31, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Allan J Olthoff Do Sc · NPI 1003959933
Health Service organization in Deerfield, Illinois. Organization record, active in the CMS NPPES registry since February 14, 2007.
## Identity
- **NPI:** 1003959933 (Entity type: Organization)
- **Enumerated:** February 14, 2007
- **Primary specialty:** Clinic/Center - Health Service · taxonomy 261QH0100X
- **Organization subpart:** No
- **Authorized official:** Allan Olthoff, PRESIDENT
## Practice location
- **Address:** 400 LAKE COOK RD, 200C, Deerfield, IL 60015-5607
- **Phone:** (847) 267-0260 · **Fax:** (847) 282-3862
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Family Practice) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 31, 2008
---
Source: [NPI Profile](https://npiprofile.com/npi/1003959933) · Data from the CMS NPPES public registry.