THERESA A GILLIS MD
NPI 1396725057
Physical Medicine & Rehabilitation in New York, NY

Active since January 19, 2006PECOS EnrolledAccepts Medicare Assignment
88.16/100
CMS Quality Rating
515 MADISON AVE FRNT 5, NEW YORK, NY 10022(646) 888-1936(646) 888-1910 Get Directions Write a Review

NPPES record last updated: December 19, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Theresa A Gillis Md NPPES

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

THERESA A GILLIS MD (NPI 1396725057) is an individual physical medicine & rehabilitation provider in New York, New York, licensed in New York (82409197) and active in the NPI registry since January 2006. She is enrolled in Medicare PECOS, is affiliated with Hackensack University Medical Center, and is a graduate of Northeastern Ohio University College Of Medicine (1989).

NPPES Registry Identity

NPI1396725057
Entity TypeIndividualFemale
Primary Taxonomy208100000X
Provider Legal NameTHERESA A GILLISCredential: MD
Location Address515 MADISON AVE FRNT 5New York, NY 10022-5488
Mailing Address515 Madison Ave Frnt 5New York, NY 10022-5488 · (646) 888-1936 · Fax (646) 888-1910
Fax(646) 888-1910
Sole ProprietorNo
Medical School CMSNortheastern Ohio University College Of MedicineGraduated 1989
Enumeration DateJanuary 19, 2006
Last NPPES UpdateDecember 19, 2018
✔ NPI 1396725057 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPhysical Medicine & RehabilitationAllopathic & Osteopathic Physicians
Taxonomy Code208100000X
Licenses✔ Licensed in NY · 82409197✔ Licensed in NJ · 25MA10013000
Definition
Physical medicine and rehabilitation, also referred to as rehabilitation medicine, is the medical specialty concerned with diagnosing, evaluating, and treating patients with physical disabilities. These disabilities may arise from conditions affecting the musculoskeletal system such as neck and back pain, sports injuries, or other painful conditions affecting the limbs, such as carpal tunnel syndrome. Alternatively, the disabilities may result from neurological trauma or disease such as spinal cord injury, head injury or stroke. A physician certified in physical medicine and rehabilitation is often called a physiatrist. The primary goal of the physiatrist is to achieve maximal restoration of physical, psychological, social and vocational function through comprehensive rehabilitation. Pain management is often an important part of the role of the physiatrist. For diagnosis and evaluation, a physiatrist may include the techniques of electromyography to supplement the standard history, physical, x-ray and laboratory examinations. The physiatrist has expertise in the appropriate use of therapeutic exercise, prosthetics (artificial limbs), orthotics and mechanical and electrical devices.
Also ListedPhysical Medicine & Rehabilitation · Hospice and Palliative MedicineTaxonomy 2081H0002X · License 82409197 (NY), 25MA10013000 (NJ)
Also ListedPhysical Medicine & Rehabilitation · Pain MedicineTaxonomy 2081P2900X · License 82409197 (NY), 25MA10013000 (NJ)
515 MADISON AVE FRNT 5, New York, NY 10022

Accepted Insurance

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

Theresa A Gillis Md 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 ID143111773
PECOS Enrollment IDI20160112000489, I20170419002012
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.

Medicare Billing Reassignments

3

Medicare enrollment records show Theresa Gillis reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Neurology
1275 YORK AVE
New York, NY 10021
  • Reassigned Medicare billing, New York enrollment
  • 191 clinicians in this Medicare group
Medical Oncology
225 SUMMIT AVE
Montvale, NJ 07645
  • Reassigned Medicare billing, New Jersey enrollment
  • 401 clinicians in this Medicare group
Medical Oncology
480 RED HILL RD
Middletown, NJ 07748
  • Reassigned Medicare billing, New Jersey enrollment
  • 464 clinicians in this Medicare group

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 4

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
116 services75 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
58 services44 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
55 services55 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
13 services12 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Hackensack University Medical Center

Acute Care Hospitals · Hackensack, NJ
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number310001
Location30 Prospect AveHackensack, NJ 07601 · Bergen County
Emergency services Birthing friendly

Valley Hospital

Acute Care Hospitals · Paramus, NJ
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number310012
Location4 Valley Health PlazaParamus, NJ 07652 · Bergen County
Emergency services Birthing friendly

Helen Hayes Hospital

Acute Care Hospitals · West Haverstraw, NY
OwnershipGovernment - State
CMS Certification Number330405
Location51 North Route 9WWest Haverstraw, NY 10993 · Rockland County

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

88.16/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality80.99
Improvement Activities40

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 Theresa Gillis's NPI number?

The NPI number for Theresa Gillis is 1396725057. It was assigned to this individual provider in the NPPES registry on January 19, 2006.

Where is Theresa Gillis located?

Theresa Gillis practices at 515 Madison Ave Frnt 5, New York, NY 10022. The listed phone number is (646) 888-1936.

What is Theresa Gillis's specialty?

The primary specialty registered for this NPI is Physical Medicine & Rehabilitation with taxonomy code 208100000X.

Is Theresa Gillis enrolled in Medicare?

Yes. Theresa Gillis 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 organizations bill Medicare for Theresa Gillis's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Theresa Gillis reassigns Medicare benefits to 3 organizations: Memorial Neurology Group (New York, NY), Msk Bergen (Montvale, NJ) and Msk Monmouth (Middletown, NJ). 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 Theresa Gillis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Theresa Gillis accept?

Health plans from Oscar Health list Theresa Gillis 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.

Is Theresa Gillis affiliated with any hospitals?

According to CMS data, Theresa Gillis is affiliated with Hackensack University Medical Center, Valley Hospital and Helen Hayes Hospital.

When was this NPI record last updated?

The NPPES record for Theresa Gillis was last updated on December 19, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.