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DOMINIC MICHAEL DEMARCO MD
NPI 1659957223
Psychiatry & Neurology - Psychiatry in Saint Louis, MO

Active since March 23, 2021PECOS EnrolledAccepts Medicare Assignment
1438 S GRAND BLVD, SAINT LOUIS, MO 63104(314) 977-4850(314) 977-5155 Get Directions Write a Review

NPPES record last updated: June 25, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jun 25, 2025, Mar 23, 2021 (2 updates tracked since 2021).

About Dominic Michael Demarco Md NPPES

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

DOMINIC MICHAEL DEMARCO MD (NPI 1659957223) is an individual psychiatry provider in Saint Louis, Missouri, licensed in Illinois (036175430) and active in the NPI registry since March 2021. He is enrolled in Medicare PECOS and is a graduate of Saint Louis University School Of Medicine (2021).

NPPES Registry Identity

NPI1659957223
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameDOMINIC MICHAEL DEMARCOCredential: MD
Location Address1438 S GRAND BLVDSaint Louis, MO 63104-1027
Mailing Address1438 S Grand BlvdSaint Louis, MO 63104-1027 · (314) 977-4850 · Fax (314) 977-5155
Phone(314) 977-4850
Fax(314) 977-5155
Sole ProprietorNo
Medical School CMSSaint Louis University School Of MedicineGraduated 2021
Enumeration DateMarch 23, 2021
Last NPPES UpdateJune 25, 20252 updates tracked since enumeration
NPPES CertifiedJune 25, 2025
✔ NPI 1659957223 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 · 036175430
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.
1438 S GRAND BLVD, Saint Louis, MO 63104
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware, Oscar 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

Dominic Michael Demarco 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.

PECOS PAC ID5193126282
PECOS Enrollment IDI20250707000023
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 Dominic Demarco reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Osf Multi-Specialty Group
153 mi
Internal Medicine
8600 N STATE ROUTE 91
Peoria, IL 61615
  • Reassigned Medicare billing, Illinois enrollment
  • 2,944 clinicians in this Medicare group
NPI 1922445527 (309) 683-5050

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 63104 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
$169.38 typical visit price
range $55.65 – $169.38
Typical copayment $42.34 (range $13.91 – $42.34)
Most-billed visit code 99205
Established Patient
$69.50 typical visit price
range $17.76 – $137.92
Typical copayment $17.37 (range $4.44 – $34.48)
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.

Other Providers at the Same Location NPPES 20

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

KATHERINE ANN COMBS FNP
Nurse Practitioner
1438 S GRAND BLVD
SAINT LOUIS, MO 63104
St. Louis City (314) 617-2000
GEORGE T GROSSBERG MD
Psychiatry & Neurology (Psychiatry)
1438 S GRAND BLVD
SAINT LOUIS, MO 63104
St. Louis City (314) 977-4829
DR. STEVEN ROBERT BRENNER M.D.
Psychiatry & Neurology (Neurology)
1438 S GRAND BLVD, ST. LOUIS UNIVERSITY, DEPT. NEUROLOGY & PSYCHIATRY
SAINT LOUIS, MO 63104
St. Louis City (314) 977-6082
BRIDGET K MCCOY MD
Psychiatry & Neurology (Psychiatry)
1438 S GRAND BLVD
SAINT LOUIS, MO 63104
St. Louis City (505) 272-2223
DR. RITIKA JAIN MD
Student in an Organized Health Care Education/Training Program
1438 S GRAND BLVD
SAINT LOUIS, MO 63104
St. Louis City (314) 617-2777
QURATULANNE SHEHERYAR MBBS
Psychiatry & Neurology (Psychiatry)
1438 S GRAND BLVD
SAINT LOUIS, MO 63104
St. Louis City (314) 977-4828
ANJAN BHATTACHARYYA MD
Psychiatry & Neurology (Psychiatry)
1438 S GRAND BLVD
SAINT LOUIS, MO 63104
St. Louis City (314) 977-4850
DR. EMILY INGE WEBB RODGERS D.O.
Psychiatry & Neurology (Psychiatry)
1438 S GRAND BLVD
SAINT LOUIS, MO 63104
St. Louis City (314) 977-4850

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 Dominic Demarco's NPI number?

The NPI number for Dominic Demarco is 1659957223. It was assigned to this individual provider in the NPPES registry on March 23, 2021.

Where is Dominic Demarco located?

Dominic Demarco practices at 1438 S Grand Blvd, Saint Louis, MO 63104. The listed phone number is (314) 977-4850.

What is Dominic Demarco's specialty?

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

Is Dominic Demarco enrolled in Medicare?

Yes. Dominic Demarco 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 Dominic Demarco's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Dominic Demarco reassigns Medicare benefits to Osf Multi-Specialty Group (Peoria, 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 Dominic Demarco's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Dominic Demarco accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Oscar Health list Dominic Demarco 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 Dominic Demarco was last updated on June 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.