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MICHAEL J FLAIS M.D.
NPI 1003899808
Allergy & Immunology - Allergy in Orland Park, IL

Active since November 25, 2005PECOS EnrolledAccepts Medicare Assignment
10733 W. 165TH ST., ORLAND PARK, IL 60467(708) 957-7468(708) 957-7471 Get Directions Write a Review

NPPES record last updated: March 17, 2010. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Michael J Flais M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MICHAEL J FLAIS M.D. (NPI 1003899808) is an individual allergy provider in Orland Park, Illinois, licensed in Illinois (36102033) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS and is a graduate of Medical College Of Ohio (1997).

NPPES Registry Identity

NPI1003899808
Entity TypeIndividualMale
Primary Taxonomy207KA0200X
Provider Legal NameMICHAEL J FLAISCredential: M.D.
Location Address10733 W. 165TH ST.Orland Park, IL 60467-8713
Mailing Address10733 W. 165th St.Orland Park, IL 60467-8713 · (708) 957-7468 · Fax (708) 957-7471
Phone(708) 957-7468
Fax(708) 957-7471
Sole ProprietorNo
Medical School CMSMedical College Of OhioGraduated 1997
Enumeration DateNovember 25, 2005
Last NPPES UpdateMarch 17, 2010
✔ NPI 1003899808 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAllergy & Immunology · AllergyAllopathic & Osteopathic Physicians
Taxonomy Code207KA0200X
License✔ Licensed in IL · 36102033
Definition
A physician who specializes in the diagnosis, treatment, and management of allergies. Source: National Uniform Claim Committee
10733 W. 165TH ST., Orland Park, IL 60467
Open in Google Maps ↗

Other Identifiers 3

Medicare UPINH73429IL
Medicaid036102033IL
Medicare ID-Type Unspecified203298IL

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Select Health.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

Michael J Flais M.d. 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.

PECOS PAC ID9830146489
PECOS Enrollment IDI20210622001521
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Michael Flais reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Salida Hospital District
963 mi
Rural Health
704 EDWARDS ST
Westcliffe, CO 81252
  • Reassigned Medicare billing, Colorado enrollment
  • Also billed through NPI 1730258971 (Colorado)
  • 206 clinicians in this Medicare group
NPI 1053790444 (719) 530-2000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 8

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

RICHARD R FITZSIMONS M.D.
Allergy & Immunology (Allergy)
10733 W. 165TH ST.
ORLAND PARK, IL 60467
Cook County (708) 957-7468
TIMOTHY J. BROWN M.D.
Allergy & Immunology (Allergy)
10733 W. 165TH ST.
ORLAND PARK, IL 60467
Cook County (708) 957-7468
MARK LOWENTHAL M.D.
Allergy & Immunology (Allergy)
10733 W. 165TH ST.
ORLAND PARK, IL 60467
Cook County (708) 957-7468
DR. ALAN H. RESNICK M.D.
Allergy & Immunology (Allergy)
10733 W. 165TH ST.
ORLAND PARK, IL 60467
Cook County (708) 957-7468
ASSOCIATED ALLERGISTS AND ASTHMA SPECIALISTS, LTD
Allergy & Immunology (Allergy)
10733 W. 165TH ST.
ORLAND PARK, IL 60467
Cook County (708) 957-7468
JAMES R HUNTER M.D.
Allergy & Immunology (Allergy)
10733 W. 165TH ST.
ORLAND PARK, IL 60467
Cook County (708) 957-7468
SAROJ KHURANA M.D.
Allergy & Immunology (Allergy)
10733 W. 165TH ST.
ORLAND PARK, IL 60467
Cook County (708) 957-7468
SAI RAM NIMMAGADDA M.D.
Allergy & Immunology (Allergy)
10733 W. 165TH ST.
ORLAND PARK, IL 60467
Cook County (708) 957-7468

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 Michael Flais's NPI number?

The NPI number for Michael Flais is 1003899808. It was assigned to this individual provider in the NPPES registry on November 25, 2005.

Where is Michael Flais located?

Michael Flais practices at 10733 W. 165th St., Orland Park, IL 60467. The listed phone number is (708) 957-7468.

What is Michael Flais's specialty?

The primary specialty registered for this NPI is Allergy & Immunology, specializing in Allergy, with taxonomy code 207KA0200X.

Is Michael Flais enrolled in Medicare?

Yes. Michael Flais 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 Michael Flais's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Flais reassigns Medicare benefits to Salida Hospital District (Westcliffe, CO). 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 Michael Flais's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Michael Flais accept?

Health plans from Select Health list Michael Flais 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 Michael Flais was last updated on March 17, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.