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DR. DONALD JOHN WALLACE DC
NPI 1891856738
Chiropractor - Rehabilitation in Smithtown, NY

Active since December 13, 2006
20 GILBERT AVE STE 201, SMITHTOWN, NY 11787(631) 360-0170(631) 724-1991 Get Directions Write a Review

NPPES record last updated: February 2, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Donald John Wallace Dc NPPES

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

DR. DONALD JOHN WALLACE DC (NPI 1891856738) is an individual rehabilitation provider in Smithtown, New York, licensed in New York (X008217-1) and active in the NPI registry since December 2006. He is a graduate of New York Chiropractic College (1996).

NPPES Registry Identity

NPI1891856738
Entity TypeIndividualMale
Primary Taxonomy111NR0400X
Provider Legal NameDR. DONALD JOHN WALLACECredential: DC
Location Address20 GILBERT AVE STE 201Smithtown, NY 11787-5312
Mailing Address20 Gilbert Ave Ste 201Smithtown, NY 11787-5312 · (631) 360-0170 · Fax (631) 724-1991
Phone(631) 360-0170
Fax(631) 724-1991
Sole ProprietorYes
Medical School CMSNew York Chiropractic CollegeGraduated 1996
Enumeration DateDecember 13, 2006
Last NPPES UpdateFebruary 2, 2026
NPPES CertifiedFebruary 2, 2026
✔ NPI 1891856738 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyChiropractor · RehabilitationChiropractic Providers
Taxonomy Code111NR0400X
License✔ Licensed in NY · X008217-1
Definition
Rehabilitation is the discipline focused on restoring a patient's functional abilities to pre-injury or pre-disease status. Functional abilities are defined as those activities in one's daily life, work, or sports and recreational activities that an individual participates in. Relevant impairments (e.g. strength, endurance, flexibility, motor control, etc.) are often intermediate goals of rehabilitation, but the final goal of successful care is return to participation in activities in which the patient was successful before the onset of the injury or disease. Essential to a rehabilitation approach is a focus on patient-centered outcomes such as independence and self-management or self-care skills.
20 GILBERT AVE STE 201, Smithtown, NY 11787
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Providence Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Donald John Wallace Dc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID6507842622
PECOS Enrollment IDI20040628001459

Medicare Billing Reassignments

2

Medicare enrollment records show Donald Wallace reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Long Island Chiropractic, Physical Therapy & Nurse Practitioner In Adult Health Of Smithtown, PLLC
Same address
Rehabilitation
20 GILBERT AVE
Smithtown, NY 11787
  • Reassigned Medicare billing, New York enrollment
  • Medicare enrollment name: Long Island Chiropractic, Physical Therapy + Nurse Practitioner In Adu
  • 5 clinicians in this Medicare group
NPI 1013720713 (516) 509-8602
Long Island Chiropractic & Physical Therapy, PLLC
Same address
Chiropractor
20 GILBERT AVE, SUITE 201
Smithtown, NY 11787
  • Reassigned Medicare billing, New York enrollment
  • 6 clinicians in this Medicare group
NPI 1417207028 (631) 724-1991

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

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Chiropractic manipulative treatment, 1-2 spinal regions 98940
Chiropractic manipulative treatment focuses on adjusting your spine to improve your body's physical function. In this service, a chiropractor applies controlled force to 1-2 spinal regions. This helps to restore mobility and alleviate discomfort in those areas.
549 services47 patients

Other Providers at the Same Location NPPES

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

LI CHIROPRACTIC & NURSE PRACTITIONER IN ADULT HEALTH, PLLC
Chiropractor
20 GILBERT AVE STE 201
SMITHTOWN, NY 11787
Suffolk County (631) 360-0170

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 Donald Wallace's NPI number?

The NPI number for Donald Wallace is 1891856738. It was assigned to this individual provider in the NPPES registry on December 13, 2006.

Where is Donald Wallace located?

Donald Wallace practices at 20 Gilbert Ave Ste 201, Smithtown, NY 11787. The listed phone number is (631) 360-0170.

What is Donald Wallace's specialty?

The primary specialty registered for this NPI is Chiropractor, specializing in Rehabilitation, with taxonomy code 111NR0400X.

Is Donald Wallace enrolled in Medicare?

Yes. Donald Wallace is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Donald Wallace's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Donald Wallace reassigns Medicare benefits to 2 organizations: Long Island Chiropractic, Physical Therapy & Nurse Practitioner In Adult Health Of Smithtown, PLLC (Smithtown, NY) and Long Island Chiropractic & Physical Therapy, PLLC (Smithtown, NY). Each 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 Donald Wallace's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Donald Wallace accept?

Health plans from Providence Health Plan list Donald Wallace 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 Donald Wallace was last updated on February 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months 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.