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GILLIAN ELIZABETH CHASE MD
NPI 1336708635
Obstetrics & Gynecology in Warwick, RI

Active since June 10, 2019PECOS EnrolledAccepts Medicare Assignment
166 TOLL GATE RD, WARWICK, RI 02886(401) 739-2000(401) 732-7842 Get Directions Write a Review

NPPES record last updated: September 5, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 5, 2025, Jul 10, 2023, Jun 10, 2019 (3 updates tracked since 2019).

About Gillian Elizabeth Chase Md NPPES

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

GILLIAN ELIZABETH CHASE MD (NPI 1336708635) is an individual obstetrics & gynecology provider in Warwick, Rhode Island, licensed in Rhode Island (MD19409) and active in the NPI registry since June 2019. She is enrolled in Medicare PECOS, is affiliated with Kent County Memorial Hospital, and maintains a secondary practice location in Providence.

NPPES Registry Identity

NPI1336708635
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameGILLIAN ELIZABETH CHASECredential: MD
Location Address166 TOLL GATE RDWarwick, RI 02886-4411
Mailing Address455 Toll Gate RdWarwick, RI 02886-2759 · (012) 730-6414 · Fax (401) 273-2919
Phone(401) 739-2000
Fax(401) 732-7842
Sole ProprietorNo
Medical School CMSOtherGraduated 2019
Enumeration DateJune 10, 2019
Last NPPES UpdateSeptember 5, 20253 updates tracked since enumeration
NPPES CertifiedSeptember 5, 2025
✔ NPI 1336708635 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in RI · MD19409
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
166 TOLL GATE RD, Warwick, RI 02886
Open in Google Maps ↗

Secondary Practice Location 1

Location 1101 Dudley StProvidence, RI 02905-2499 · Phone (401) 274-1122

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

Gillian Elizabeth Chase 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 ID244650018
PECOS Enrollment IDI20230830003504
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 Gillian Chase reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Affinity Physicians LLC.
0.7 mi
Internal Medicine
455 TOLL GATE RD
Warwick, RI 02886
  • Reassigned Medicare billing, Rhode Island enrollment
  • 984 clinicians in this Medicare group
NPI 1184944662 (401) 737-7010
Lifespan Physician Group, Inc.
8.3 mi
General Practice
593 EDDY ST
Providence, RI 02903
  • Reassigned Medicare billing, Rhode Island enrollment
  • 1,372 clinicians in this Medicare group
NPI 1407116643 (401) 444-6779
Prime Healthcare Services Landmark LLC
21 mi
Orthopaedic Surgery
219 CASS AVE
Woonsocket, RI 02895
  • Reassigned Medicare billing, Rhode Island enrollment
  • Also billed through NPI 1518388651 (Rhode Island)
  • 65 clinicians in this Medicare group
NPI 1457772543 (401) 769-4100

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 2

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.
23 services14 patients
Cervical or vaginal cancer screening; pelvic and clinical breast examination G0101
This procedure involves checking for health issues in the lower abdomen and chest area. It helps identify early signs of certain conditions, increasing the chance for successful treatment. It's a routine check-up that's important for maintaining good health.
12 services12 patients

Hospital Affiliations CMS Care Compare 2

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

Kent County Memorial Hospital

Acute Care Hospitals · Warwick, RI
3/5 CMS rating
OwnershipProprietary
CMS Certification Number410009
Location455 Toll Gate RdWarwick, RI 02886 · Kent County
Emergency services Birthing friendly

Women & Infants Hospital Of Rhode Island

Acute Care Hospitals · Providence, RI
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number410010
Location101 Dudley StreetProvidence, RI 02905 · Providence County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02886 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$134.17 typical visit price
range $58.57 – $177.03
Typical copayment $33.54 (range $14.64 – $44.25)
Most-billed visit code 99204
Established Patient
$72.93 typical visit price
range $18.92 – $144.38
Typical copayment $18.23 (range $4.73 – $36.09)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 7

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

DR. ALTHEA LINDSAY DO
Obstetrics & Gynecology
166 TOLL GATE RD, CARING FOR WOMEN
WARWICK, RI 02886
Kent County (401) 739-2000
DR. BETHANY WORTMAN MD
Obstetrics & Gynecology
166 TOLL GATE RD
WARWICK, RI 02886
Kent County (401) 739-7000
CARING FOR WOMEN INC
Obstetrics & Gynecology (Gynecology)
166 TOLL GATE RD
WARWICK, RI 02886
Kent County (401) 739-2000
ROBERT SALK DO
Obstetrics & Gynecology
166 TOLL GATE RD
WARWICK, RI 02886
Kent County (401) 739-2000
KATHLEEN WOODRUFF MD
Obstetrics & Gynecology
166 TOLL GATE RD
WARWICK, RI 02886
Kent County (401) 739-2000
MAURO A COLAVITA MD
Obstetrics & Gynecology
166 TOLL GATE RD
WARWICK, RI 02886
Kent County (401) 739-2000
SILVIA MARGARITA HERRERA PINILLA M.D.
Obstetrics & Gynecology
166 TOLL GATE RD
WARWICK, RI 02886
Kent County (401) 739-2000

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 Gillian Chase's NPI number?

The NPI number for Gillian Chase is 1336708635. It was assigned to this individual provider in the NPPES registry on June 10, 2019.

Where is Gillian Chase located?

Gillian Chase practices at 166 Toll Gate Rd, Warwick, RI 02886. The listed phone number is (401) 739-2000.

What is Gillian Chase's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Gillian Chase enrolled in Medicare?

Yes. Gillian Chase 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 Gillian Chase's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gillian Chase reassigns Medicare benefits to 3 organizations: Affinity Physicians LLC. (Warwick, RI), Lifespan Physician Group, Inc. (Providence, RI) and Prime Healthcare Services Landmark LLC (Woonsocket, RI). 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 Gillian Chase's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Gillian Chase affiliated with any hospitals?

According to CMS data, Gillian Chase is affiliated with Kent County Memorial Hospital and Women & Infants Hospital Of Rhode Island.

When was this NPI record last updated?

The NPPES record for Gillian Chase was last updated on September 5, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.