1. Home
  2. Directory
  3. Rhode Island
  4. Charlestown
  5. Internal Medicine
  6. NPI Profile

STUART V DEMIRS MD LLC
NPI 1417515354
Internal Medicine in Charlestown, RI

Active since June 05, 2019
4099 OLD POST RD, CHARLESTOWN, RI 02813(401) 364-0770(401) 364-7694 Get Directions Write a Review

NPPES record last updated: May 12, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: May 12, 2021, Jul 23, 2019, Jun 5, 2019 (3 updates tracked since 2019).

About Stuart V Demirs Md Llc NPPES

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

STUART V DEMIRS MD LLC (NPI 1417515354) is a healthcare organization registered as an internal medicine in Charlestown, Rhode Island and active in the NPI registry since June 2019. The organization lists Stuart Demirs, Owner, as its authorized official.

NPPES Registry Identity

NPI1417515354
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameSTUART V DEMIRS MD LLC
Location Address4099 OLD POST RDCharlestown, RI 02813-2553
Mailing AddressPo Box 910Charlestown, RI 02813-0901 · (401) 364-0770 · Fax (401) 364-7694
Phone(401) 364-0770
Fax(401) 364-7694
Organization SubpartNo
Authorized OfficialStuart DemirsOwner · (401) 364-0770
Enumeration DateJune 5, 2019
Last NPPES UpdateMay 12, 20213 updates tracked since enumeration
NPPES CertifiedMay 12, 2021
✔ NPI 1417515354 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedPediatricsTaxonomy 208000000X
4099 OLD POST RD, Charlestown, RI 02813
Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-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)

Stuart V Demirs Md Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

2

Medicare enrollment records show 2 clinicians reassign Medicare billing to Stuart V Demirs MD LLC, which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.

Clinicians, nearest first (2)

Stuart Demirs, M.D.
Internal Medicine
NPI 1285685560
4099 OLD POST RD
Charlestown, RI 02813
(401) 364-0770
✔ PECOS✔ Accepts MedicareSame address
Gina Mayo, MS, RNP
Nurse Practitioner
NPI 1528185840
4099 OLD POST RD
Charlestown, RI 02813
(401) 364-0770
✔ 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 Stuart V Demirs MD LLC's NPI number?

The NPI number for Stuart V Demirs MD LLC is 1417515354. It was assigned to this organization in the NPPES registry on June 5, 2019.

Where is Stuart V Demirs MD LLC located?

Stuart V Demirs MD LLC is located at 4099 Old Post Rd, Charlestown, RI 02813. The listed phone number is (401) 364-0770.

What is Stuart V Demirs MD LLC's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Stuart V Demirs MD LLC enrolled in Medicare?

Yes. Stuart V Demirs MD LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Stuart V Demirs MD LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians reassign their Medicare billing to Stuart V Demirs MD LLC, in Internal Medicine and Nurse Practitioner. 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. Of these, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Stuart V Demirs MD LLC was last updated on May 12, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.