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MR. NATHAN A OATIS MSW, LCSW
NPI 1295505667
Social Worker - Clinical in Saint Louis, MO

Active since January 05, 2024PECOS Enrolled
3109 S GRAND BLVD STE 200C, SAINT LOUIS, MO 63118(314) 691-0903 Get Directions Write a Review

NPPES record last updated: December 22, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Dec 22, 2025, Dec 18, 2025, Apr 25, 2024 and 2 more (5 updates tracked since 2024).

About Mr. Nathan A Oatis Msw, Lcsw NPPES

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

MR. NATHAN A OATIS MSW, LCSW (NPI 1295505667) is an individual clinical provider in Saint Louis, Missouri, licensed in Missouri (2021049186) and active in the NPI registry since January 2024. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1295505667
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameMR. NATHAN A OATISCredential: MSW, LCSW
Location Address3109 S GRAND BLVD STE 200CSaint Louis, MO 63118-1039
Mailing Address3109 S Grand Blvd Ste 200cSaint Louis, MO 63118-1039 · (314) 691-0903
Phone(314) 691-0903
Sole ProprietorYes
Enumeration DateJanuary 5, 2024
Last NPPES UpdateDecember 22, 20255 updates tracked since enumeration
NPPES CertifiedDecember 22, 2025
✔ NPI 1295505667 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in MO · 2021049186
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
3109 S GRAND BLVD STE 200C, Saint Louis, MO 63118
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Other Identifiers 1

Medicaid490136018MO

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Medica, Oscar Insurance Company, UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mr. Nathan A Oatis Msw, Lcsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63118 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
$0.00 typical visit price
range $55.65 – $169.38
Typical copayment $0.00 (range $13.91 – $42.34)
Most-billed visit code NA
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.

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 Nathan Oatis's NPI number?

The NPI number for Nathan Oatis is 1295505667. It was assigned to this individual provider in the NPPES registry on January 5, 2024.

Where is Nathan Oatis located?

Nathan Oatis practices at 3109 S Grand Blvd Ste 200C, Saint Louis, MO 63118. The listed phone number is (314) 691-0903.

What is Nathan Oatis's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Is Nathan Oatis enrolled in Medicare?

Yes. Nathan Oatis is registered in the Medicare PECOS enrollment system.

What insurance does Nathan Oatis accept?

Health plans from Medica, Oscar Insurance Company and UnitedHealthcare list Nathan Oatis 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 Nathan Oatis was last updated on December 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.