Mark Oliveras

ActiveIndividual ProviderMarriage & Family Therapist
NPI issued: May 22, 2026

Quick Facts

NPI Number
1851221527
TypeIndividual
StatusActive
SpecialtyMarriage & Family Therapist
Taxonomy106H00000X — Marriage & Family Therapist
Phone
(888) 277-4028
StateIL

NPI Validation Status: Verified

✅Valid 10-digit NPI number (1851221527)
✅Active status confirmed
✅Verified by CMS NPPES Registry
✅HIPAA compliant identifier
✅Enumeration date on file (May 22, 2026)
Data source: CMS NPPES

Provider Overview

MARK OLIVERAS is a Marriage & Family Therapist provider based in Belleville, IL who has been registered with CMS since 2026. This NPI is currently Active under CMS NPPES registry.

Provider Details

NPI Number1851221527
Provider TypeIndividual Provider
GenderMale
StatusActive
Enumeration DateMay 22, 2026

Practice Location

CityBelleville
StateIL
ZIP Code62223-5007
Phone(888) 277-4028

Specialties & Licenses

★ Primary
SpecialtyMarriage & Family Therapist
Taxonomy Code106H00000X
License StateIL

Mailing Address

CityBelleville
StateIL
ZIP Code62223-5007
Phone(888) 277-4028
Same as practice location

How to Use This NPI

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For Insurance Billing

Use NPI 1851221527 in Box 33 of the CMS-1500 claim form. This number is required by all major insurance carriers to identify the billing provider and process electronic medical claims.

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For Credentialing

Reference NPI 1851221527for provider credential verification. Hospital systems, state licensing boards, and CAQH directories query this number to verify the provider's active clinical status.

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For Patients

Share NPI 1851221527 with your insurance company. If you need to verify out-of-network benefits or file a reimbursement claim, your insurance provider will require this number to process it.

About Marriage & Family Therapist

Specialists in Marriage & Family Therapist provide expert clinical care within their specific domain, focusing on the diagnosis, treatment, and management of conditions relevant to their field of practice.

Browse all Marriage & Family Therapistproviders →
📊
98,050
Marriage & Family Therapist Providers in the US

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People Also Ask

What is Mark Oliveras's NPI number?
Mark Oliveras's NPI number is 1851221527, a unique 10-digit identifier issued by the Centers for Medicare & Medicaid Services (CMS).
Is Mark Oliveras's NPI currently active?
Yes, Mark Oliveras's NPI status is Active as of the latest CMS NPPES database updates.
What does Mark Oliveras specialize in?
Mark Oliveras specializes in Marriage & Family Therapist. The healthcare taxonomy code associated with this specialty is 106H00000X.
Where does Mark Oliveras practice?
Mark Oliveras practices in Belleville, IL 62223-5007.
When was Mark Oliveras's NPI issued?
Mark Oliveras's NPI was issued on May 22, 2026.
What is Mark Oliveras's provider type?
Mark Oliveras is registered as an Individual Provider under CMS NPI Type 1.