MITCHELL BRIAN PEI MD
NPI 1679277693
Family Medicine in Chicago, IL
About Mitchell Brian Pei Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MITCHELL BRIAN PEI MD (NPI 1679277693) is an individual family medicine provider in Chicago, Illinois, licensed in Illinois (036.177145) and active in the NPI registry since March 2023. He is enrolled in Medicare PECOS and is a graduate of University Of Toledo College Of Medicine (2023).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mitchell Brian Pei Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Mitchell Pei reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Chicago, IL 60657
- Reassigned Medicare billing, Illinois enrollment
- 4,870 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60614 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 13
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHICAGO, IL 60614
CHICAGO, IL 60614
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 Mitchell Pei's NPI number?
The NPI number for Mitchell Pei is 1679277693. It was assigned to this individual provider in the NPPES registry on March 27, 2023.
Where is Mitchell Pei located?
Mitchell Pei practices at 1435 W Webster Ave, Chicago, IL 60614. The listed phone number is (773) 356-7700.
What is Mitchell Pei's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Mitchell Pei enrolled in Medicare?
Yes. Mitchell Pei is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Mitchell Pei's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mitchell Pei reassigns Medicare benefits to Advocate Health And Hospitals Corp. (Chicago, IL). The 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 Mitchell Pei's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mitchell Pei accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Oscar Health list Mitchell Pei as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Mitchell Pei was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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.
# Mitchell Brian Pei, MD · NPI 1679277693
Family Medicine physician in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since March 27, 2023.
## Identity
- **NPI:** 1679277693 (Entity type: Individual)
- **Enumerated:** March 27, 2023
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 036.177145 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 1435 W WEBSTER AVE, Chicago, IL 60614-3049
- **Phone:** (773) 356-7700
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Advocate Health And Hospitals Corp. (NPI 1487951711, Chicago, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Toledo College Of Medicine, class of 2023
## Record status
- **NPPES last updated:** July 13, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1679277693) · Data from the CMS NPPES public registry.