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DR. MAHLON K. STEWART PT, DPT, GCS
NPI 1952738973
Physical Therapist - Geriatrics in New York, NY

Active since October 04, 2013Accepts Medicare Assignment
50 E 10TH ST, SUITE 2E, NEW YORK, NY 10003(917) 533-4166(917) 300-0376 Get Directions Write a Review

NPPES record last updated: October 4, 2013. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Mahlon K. Stewart Pt, Dpt, Gcs NPPES

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

DR. MAHLON K. STEWART PT, DPT, GCS (NPI 1952738973) is an individual geriatrics provider in New York, New York, licensed in New York (030689) and active in the NPI registry since October 2013. He is a graduate of Columbia University College Of Physicians And Surgeons (2008).

NPPES Registry Identity

NPI1952738973
Entity TypeIndividualMale
Primary Taxonomy2251G0304X
Provider Legal NameDR. MAHLON K. STEWARTCredential: PT, DPT, GCS
Location Address50 E 10TH ST, SUITE 2ENew York, NY 10003-6221
Mailing Address50 E 10th St, Suite 2eNew York, NY 10003-6221 · (917) 533-4166 · Fax (917) 300-0376
Phone(917) 533-4166
Fax(917) 300-0376
Sole ProprietorYes
Medical School CMSColumbia University College Of Physicians And SurgeonsGraduated 2008
Enumeration DateOctober 4, 2013
✔ NPI 1952738973 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysical Therapist · GeriatricsRespiratory, Developmental, Rehabilitative and Restorative Service Providers
Taxonomy Code2251G0304X
Licenses✔ Licensed in NY · 030689✔ Licensed in NJ · 40QA01288300
Definition
A licensed physical therapist, including but not limited to an individual who is a Board Certified Specialist in Geriatric Physical Therapy, who has demonstrated specialized knowledge and skill in the comprehensive biopsychosocial assessment and evidence-based management of movement in aging adults. This includes, but is not limited to, specialized knowledge in and consideration of normal age-related changes and pathological manifestations across all systems; cognition and mental health; polypharmacy; fall risk mitigation; bone health; healthy and active aging, and socioeconomic and health policy issues affecting aging adults. The geriatric physical therapist is an integral part of the interdisciplinary geriatric team and serves as an advocate for the highest level of well-being for the older adult.
50 E 10TH ST, New York, NY 10003
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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

Dr. Mahlon K. Stewart Pt, Dpt, Gcs 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 ID6305078718
PECOS Enrollment IDI20140512000026

Medicare Billing Reassignment

Medicare enrollment records show Mahlon Stewart reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Trustees Of Columbia University In The City Of New York
8.0 mi
Anesthesiology
622 W 168TH ST
New York, NY 10032
  • Reassigned Medicare billing, New York enrollment
  • 3,922 clinicians in this Medicare group
NPI 1477068971 (212) 305-9876

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES

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

DR. MYRON KOLTUV PH.D
Psychologist (Clinical)
50 E 10TH ST, 1C
NEW YORK, NY 10003
New York County (212) 673-3407

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 Mahlon Stewart's NPI number?

The NPI number for Mahlon Stewart is 1952738973. It was assigned to this individual provider in the NPPES registry on October 4, 2013.

Where is Mahlon Stewart located?

Mahlon Stewart practices at 50 E 10th St Suite 2E, New York, NY 10003. The listed phone number is (917) 533-4166.

What is Mahlon Stewart's specialty?

The primary specialty registered for this NPI is Physical Therapist, specializing in Geriatrics, with taxonomy code 2251G0304X.

Is Mahlon Stewart enrolled in Medicare?

Yes. Mahlon Stewart 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 Mahlon Stewart's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mahlon Stewart reassigns Medicare benefits to Trustees Of Columbia University In The City Of New York (New York, NY). 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 Mahlon Stewart's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Mahlon Stewart was last updated on October 4, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years 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.