Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MR. JUSTIN DANIEL GELLMAN BS
NPI 1659122182
General Practice in Clayton, MO

Q: What is Justin Gellman's NPI number?

The NPI number for Justin Gellman is 1659122182. It was assigned to this individual provider in the NPPES registry on April 1, 2024.

Q: What is Justin Gellman's specialty?

The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.

Q: When was this NPI record last updated?

The NPPES record for Justin Gellman was last updated on July 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 40 days 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.

Active since April 01, 2024PECOS Enrolled

248 GAY AVE, CLAYTON, MO 63105(314) 605-9889 Get Directions Write a Review

NPPES record last updated: July 16, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Jul 16, 2026, Apr 3, 2025, Apr 1, 2024 (3 updates tracked since 2024).

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About Mr. Justin Daniel Gellman Bs NPPES

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

MR. JUSTIN DANIEL GELLMAN BS (NPI 1659122182) is an individual general practice provider in Clayton, Missouri, licensed in Missouri (2026028673) and active in the NPI registry since April 2024. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1659122182

Entity TypeIndividualMale

Primary Taxonomy208D00000X

Provider Legal NameMR. JUSTIN DANIEL GELLMANCredential: BS

Location Address248 GAY AVEClayton, MO 63105-3622

Mailing Address248 Gay AveClayton, MO 63105-3622 · (314) 605-9889

Phone(314) 605-9889

Sole ProprietorYes

Enumeration DateApril 1, 2024

Last NPPES UpdateJuly 16, 20263 updates tracked since enumeration

NPPES CertifiedJuly 16, 2026

✔ NPI 1659122182 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyGeneral PracticeAllopathic & Osteopathic Physicians

Taxonomy Code208D00000X

License✔ Licensed in MO · 2026028673

Definition

A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions. Source: National Uniform Claim Committee

248 GAY AVE, Clayton, MO 63105

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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. Justin Daniel Gellman Bs 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.

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 Justin Gellman's NPI number?

The NPI number for Justin Gellman is 1659122182. It was assigned to this individual provider in the NPPES registry on April 1, 2024.

Where is Justin Gellman located?

Justin Gellman practices at 248 Gay Ave, Clayton, MO 63105. The listed phone number is (314) 605-9889.

What is Justin Gellman's specialty?

The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.

Is Justin Gellman enrolled in Medicare?

Yes. Justin Gellman is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Justin Gellman was last updated on July 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 40 days 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.