GRANT N UNDERHILL LCSW
NPI 1053982579
Social Worker - Clinical in Saint Louis, MO

Active since July 06, 2021PECOS Enrolled
1001 LYNCH ST, SAINT LOUIS, MO 63118(314) 535-5600 Get Directions Write a Review

NPPES record last updated: April 16, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Apr 16, 2026, Jul 6, 2021 (2 updates tracked since 2021).

About Grant N Underhill Lcsw NPPES

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

GRANT N UNDERHILL LCSW (NPI 1053982579) is an individual clinical provider in Saint Louis, Missouri, licensed in Missouri (2023041447) and active in the NPI registry since July 2021. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1053982579
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameGRANT N UNDERHILLCredential: LCSW
Location Address1001 LYNCH STSaint Louis, MO 63118-1818
Mailing AddressPo Box 844715Kansas City, MO 64184-4715 · (417) 761-5214 · Fax (417) 761-5065
Sole ProprietorNo
Enumeration DateJuly 6, 2021
Last NPPES UpdateApril 16, 20262 updates tracked since enumeration
NPPES CertifiedApril 16, 2026
NPI 1053982579 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 · 2023041447
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.

1001 LYNCH ST, Saint Louis, MO 63118

Accepted 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)

Grant N Underhill 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.

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.

Social Worker (Clinical)
1001 LYNCH ST
SAINT LOUIS, MO 63118
Social Worker (Clinical)
1001 LYNCH ST
SAINT LOUIS, MO 63118
Social Worker (Clinical)
1001 LYNCH ST
SAINT LOUIS, MO 63118
Social Worker
1001 LYNCH ST
SAINT LOUIS, MO 63118
Occupational Therapist
1001 LYNCH ST
SAINT LOUIS, MO 63118
Social Worker (Clinical)
1001 LYNCH ST
SAINT LOUIS, MO 63118
Social Worker (Clinical)
1001 LYNCH ST
SAINT LOUIS, MO 63118
Nurse Practitioner
1001 LYNCH ST
SAINT LOUIS, MO 63118

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 Grant Underhill's NPI number?

The NPI number for Grant Underhill is 1053982579. It was assigned to this individual provider in the NPPES registry on July 6, 2021.

Where is Grant Underhill located?

Grant Underhill practices at 1001 Lynch St, Saint Louis, MO 63118. The listed phone number is (314) 535-5600.

What is Grant Underhill's specialty?

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

Is Grant Underhill enrolled in Medicare?

Yes. Grant Underhill is registered in the Medicare PECOS enrollment system.

What insurance does Grant Underhill accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health and Ambetter from Sunflower Health Plan and 3 other insurers list Grant Underhill 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 Grant Underhill was last updated on April 16, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.