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DR. ROBERT WILLIAM MARQUIS M.D.
NPI 1376668574
Psychiatry & Neurology - Psychiatry in Mokena, IL

Active since March 20, 2007Opted out of Medicare · through Mar 7, 2028
19635 LA GRANGE RD, MOKENA, IL 60448(708) 479-0700(708) 479-8959 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Robert William Marquis M.d. NPPES

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

DR. ROBERT WILLIAM MARQUIS M.D. (NPI 1376668574) is an individual psychiatry provider in Mokena, Illinois, licensed in Illinois (0360055192) and active in the NPI registry since March 2007. He has opted out of Medicare through March 7, 2028 and remains eligible to order and refer.

NPPES Registry Identity

NPI1376668574
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameDR. ROBERT WILLIAM MARQUISCredential: M.D.
Location Address19635 LA GRANGE RDMokena, IL 60448-9360
Mailing Address20825 London DrOlympia Fields, IL 60461-1874 · (708) 479-0700 · Fax (708) 479-8959
Phone(708) 479-0700
Fax(708) 479-8959
Sole ProprietorYes
Enumeration DateMarch 20, 2007
Last NPPES UpdateJuly 8, 2007
✔ NPI 1376668574 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in IL · 0360055192
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
19635 LA GRANGE RD, Mokena, IL 60448
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Providence Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

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Opted out of Medicare

Dr. Robert William Marquis M.d. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from March 7, 2018 through March 7, 2028.

Opt-Out Effective DateMarch 7, 2018
Opt-Out In Effect ThroughMarch 7, 2028Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60448 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$181.38 typical visit price
range $59.81 – $181.38
Typical copayment $45.34 (range $14.95 – $45.34)
Most-billed visit code 99205
Established Patient
$74.38 typical visit price
range $19.15 – $147.12
Typical copayment $18.59 (range $4.78 – $36.78)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Robert Marquis's NPI number?

The NPI number for Robert Marquis is 1376668574. It was assigned to this individual provider in the NPPES registry on March 20, 2007.

Where is Robert Marquis located?

Robert Marquis practices at 19635 La Grange Rd, Mokena, IL 60448. The listed phone number is (708) 479-0700.

What is Robert Marquis's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Robert Marquis enrolled in Medicare?

No. Robert Marquis has opted out of Medicare through March 7, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

What insurance does Robert Marquis accept?

Health plans from Providence Health Plan list Robert Marquis 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 Robert Marquis was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.