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LESLIE R. GASS, D.O., INC.
NPI 1447421862
Neuromusculoskeletal Medicine & OMM in Portland, ME

Active since March 13, 2008
535 OCEAN AVE, PORTLAND, ME 04103(207) 773-7330(207) 773-7340 Get Directions Write a Review

NPPES record last updated: April 24, 2012. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Leslie R. Gass, D.o., Inc. NPPES

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

LESLIE R. GASS, D.O., INC. (NPI 1447421862) is a healthcare organization registered as a neuromusculoskeletal medicine & omm in Portland, Maine and active in the NPI registry since March 2008. The organization lists Leslie R. Gass, Physician, as its authorized official.

NPPES Registry Identity

NPI1447421862
Entity TypeOrganization
Primary Taxonomy204D00000X
Legal Business NameLESLIE R. GASS, D.O., INC.
Location Address535 OCEAN AVEPortland, ME 04103-4973
Mailing Address535 Ocean AvePortland, ME 04103-4973 · (207) 773-7330 · Fax (207) 773-7340
Phone(207) 773-7330
Fax(207) 773-7340
Organization SubpartNo
Authorized OfficialLeslie R. GassPhysician · (207) 773-7330
Enumeration DateMarch 13, 2008
Last NPPES UpdateApril 24, 2012
✔ NPI 1447421862 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNeuromusculoskeletal Medicine & OMMAllopathic & Osteopathic Physicians
Taxonomy Code204D00000X
License✔ Licensed in ME · 1804
Definition
The Neuromusculoskeletal Medicine and Osteopathic Manipulative Medicine physician directs special attention to the neuromusculoskeletal system and its interaction with other body systems. Neuromusculoskeletal Medicine and Osteopathic Manipulative Medicine encompasses increased knowledge and understanding of osteopathic principles and practice and heightened technical skills of osteopathic manipulative medicine, and integrates each of these into the management of pediatric, adolescent, adult, and geriatric patients.
535 OCEAN AVE, Portland, ME 04103
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Leslie R. Gass, D.o., Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Leslie R. Gass, D.O., Inc., which bills Medicare for the services this clinician delivers.

Clinician (1)

Leslie Gass, DO
Osteopathic Manipulative Medicine
NPI 1679668453
535 OCEAN AVE
Portland, ME 04103
(207) 773-7330
✔ PECOS✔ Accepts MedicareSame address

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

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 Leslie R. Gass, D.O., Inc.'s NPI number?

The NPI number for Leslie R. Gass, D.O., Inc. is 1447421862. It was assigned to this organization in the NPPES registry on March 13, 2008.

Where is Leslie R. Gass, D.O., Inc. located?

Leslie R. Gass, D.O., Inc. is located at 535 Ocean Ave, Portland, ME 04103. The listed phone number is (207) 773-7330.

What is Leslie R. Gass, D.O., Inc.'s specialty?

The primary specialty registered for this NPI is Neuromusculoskeletal Medicine & OMM with taxonomy code 204D00000X.

Is Leslie R. Gass, D.O., Inc. enrolled in Medicare?

Yes. Leslie R. Gass, D.O., Inc. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Leslie R. Gass, D.O., Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Osteopathic Manipulative Medicine) reassigns their Medicare billing to Leslie R. Gass, D.O., Inc.. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Leslie R. Gass, D.O., Inc. was last updated on April 24, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.