What is Michael Flais's NPI number?

Michael Flais's National Provider Identifier (NPI) is 1003899808, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Michael Flais's specialty?

Michael Flais is listed in the NPPES registry with a primary specialty of Allergy Physician (Allopathic & Osteopathic Physicians).

Where is Michael Flais located?

Michael Flais's practice location on file with NPPES is 10733 W. 165th St., Orland Park, IL 60467-8713.

What is Michael Flais's phone number?

The practice phone number listed in the NPPES registry for Michael Flais is (708) 957-7468.

Does Michael Flais accept Medicare?

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

Is Michael Flais's NPI active?

Yes — Michael Flais's NPI (1003899808) is active in the NPPES registry as of the last update on 2010-03-17.

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Michael Flais, M.D.

NPI 1003899808 · Allergy Physician · Orland Park, IL

Michael Flais, M.D. is a Allergy Physician provider in Orland Park, IL (NPI 1003899808).

Provider details

NPI number: 1003899808
Entity type: Individual
Primary specialty: Allergy PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: No
License: 36102033 (IL)

Practice location

10733 W. 165th St.

Orland Park, IL 60467-8713

Phone: (708) 957-7468

Fax: (708) 957-7471

Street-level locationGet directions

More IL providers

Mailing address

10733 W. 165th St.

Orland Park, IL 60467-8713

Specialties & taxonomies

Allergy PhysicianPrimary207KA0200XLicense 36102033 (IL)
Allopathic & Osteopathic Physicians

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

Profile Score

Detailed profile(92/100 index)

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

Registry tenure33% of score
20 yrs in NPPES registry
Profile completeness33% of score
100% of core fields populated
Practice footprint20% of score
1 documented practice location
Open Payments transparency13% of score
Has Open Payments disclosures (2024)

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 prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Azelastine Hcl	65	35
Ipratropium Bromide	49	16
Albuterol Sulfatebrand: Albuterol Sulfate Hfa	30	21
Fluticasone Propion/Salmeterolbrand: Advair Hfa	29	—
Tiotropium Bromidebrand: Spiriva Respimat	26	—
Fluticasone Propion/Salmeterolbrand: Fluticasone-Salmeterol	22	—
Prednisone

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$253 across 12 records (Open Payments 2024)

Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.

Enumerated: 2005-11-25
Last updated: 2010-03-17

Frequently asked questions

What is Michael Flais's NPI number?: Michael Flais's National Provider Identifier (NPI) is 1003899808, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Michael Flais's specialty?: Michael Flais is listed in the NPPES registry with a primary specialty of Allergy Physician (Allopathic & Osteopathic Physicians).
Where is Michael Flais located?: Michael Flais's practice location on file with NPPES is 10733 W. 165th St., Orland Park, IL 60467-8713.
What is Michael Flais's phone number?: The practice phone number listed in the NPPES registry for Michael Flais is (708) 957-7468.
Does Michael Flais accept Medicare?: Michael Flais is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Michael Flais's NPI active?: Yes — Michael Flais's NPI (1003899808) is active in the NPPES registry as of the last update on 2010-03-17.

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

What this provider prescribes (Medicare Part D)

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider prescribes (Medicare Part D)

Transparency — industry payments