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DR. CASSANDRA TRIBBLE M.D
NPI 1811924657
Anesthesiology - Pain Medicine in Greenwich, CT

Active since June 27, 2006PECOS EnrolledAccepts Medicare Assignment
5 PERRYRIDGE RD, GREENWICH, CT 06830(203) 661-5330 Get Directions Write a Review

NPPES record last updated: March 31, 2008. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Cassandra Tribble M.d NPPES

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

DR. CASSANDRA TRIBBLE M.D (NPI 1811924657) is an individual pain medicine provider in Greenwich, Connecticut, licensed in Connecticut (035091) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS, is affiliated with Putnam Hospital Center, and is a graduate of Mid West Medical College (1990).

NPPES Registry Identity

NPI1811924657
Entity TypeIndividualFemale
Primary Taxonomy207LP2900X
Provider Legal NameDR. CASSANDRA TRIBBLECredential: M.D
Location Address5 PERRYRIDGE RDGreenwich, CT 06830-4608
Mailing Address255 W Michigan AveJackson, MI 49201-2218 · (517) 787-6440 · Fax (517) 787-4146
Phone(203) 661-5330
Sole ProprietorNo
Medical School CMSMid West Medical CollegeGraduated 1990
Enumeration DateJune 27, 2006
Last NPPES UpdateMarch 31, 2008
✔ NPI 1811924657 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiology · Pain MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207LP2900X
License✔ Licensed in CT · 035091
Definition
An anesthesiologist who provides a high level of care, either as a primary physician or consultant, for patients experiencing problems with acute, chronic and/or cancer pain in both hospital and ambulatory settings. Patient care needs are also coordinated with other specialists.
5 PERRYRIDGE RD, Greenwich, CT 06830
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.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

Dr. Cassandra Tribble M.d 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 ID5395638589
PECOS Enrollment IDI20040203000315, I20250430001404
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

2

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

North Shore - Lij Anesthesiology, PC
12 mi
Anesthesiology
480 BEDFORD RD BLDG B
Chappaqua, NY 10514
  • Reassigned Medicare billing, Connecticut and New York enrollments
  • 29 clinicians in this Medicare group
NPI 1417401266 (914) 666-8866
Bridgeport Anesthesia Associates, P.C.
26 mi
Anesthesiology
267 GRANT ST
Bridgeport, CT 06610
  • Reassigned Medicare billing, Connecticut enrollment
  • 129 clinicians in this Medicare group
NPI 1174549257 (203) 384-3072

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 10

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.

Anesthesia for lens surgery 00142
Anesthesia for lens surgery involves administering medication to numb the eye area, ensuring you feel no pain during the procedure. This can be a local anesthetic (numbing only the eye area) or general (where you're asleep). It helps make the surgery comfortable and stress-free.
66 services66 patients
Anesthesia for other procedure on large bowel using an endoscope 00811
Anesthesia for an endoscopic procedure on the large bowel ensures comfort and relaxation during the procedure. You'll be given medication to make you drowsy or asleep, eliminating any discomfort. The medication can be administered through a vein or inhaled.
19 services19 patients
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731
This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.
18 services18 patients
Anesthesia for exam of colon using an endoscope 00812
Anesthesia for a colon examination with an endoscope is a method used to ensure comfort during the procedure. It involves administering medication to help you relax or sleep, thus reducing discomfort as the endoscope, a thin, flexible tube, is navigated through your colon.
18 services18 patients
Anesthesia for procedure on small and large bowel using an endoscope 00813
Anesthesia for an endoscopic procedure on the small and large bowel ensures comfort and relaxation during the procedure. It involves administering medicine to help you sleep or feel drowsy. This allows the doctor to examine your bowels without causing you discomfort or pain.
16 services16 patients
Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) 64447
This procedure involves injecting a numbing agent and/or steroid into a nerve in your thigh. It's done to alleviate pain or inflammation. A needle will be carefully positioned near the nerve, and the medicine will be administered.
16 services15 patients

Hospital Affiliations CMS Care Compare

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

Putnam Hospital Center

Acute Care Hospitals · Carmel, NY
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330273
Location670 Stoneleigh AvenueCarmel, NY 10512 · Putnam County
Emergency services Birthing friendly

Other Providers at the Same Location NPPES 20

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

ZARA NADIA ILAHI MD
Pediatrics (Neonatal-Perinatal Medicine)
5 PERRYRIDGE RD
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 863-3000
MR. PAUL GREGORY LOFTUS MS
Physical Medicine & Rehabilitation
5 PERRYRIDGE RD
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 863-3203
SARAH STAMPER M.D.
Student in an Organized Health Care Education/Training Program
5 PERRYRIDGE RD, MEDICAL EDUCATION
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 863-3409
JUNE EVELYN JEON MD
Student in an Organized Health Care Education/Training Program
5 PERRYRIDGE RD
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 863-3000
ARIANA DOMINICUS PA-C
Physician Assistant
5 PERRYRIDGE RD
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 863-3000
ERIC LI-MING HUANG BSC, PHARMD
Pharmacist (Pharmacotherapy)
5 PERRYRIDGE RD
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 863-3199
ROSEMARY PERLEY-KWAUK CRNA
Nurse Anesthetist, Certified Registered
5 PERRYRIDGE RD
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 661-5330
DR. FRANCISCO J BREA MD
Anesthesiology
5 PERRYRIDGE RD
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 661-5330

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 Cassandra Tribble's NPI number?

The NPI number for Cassandra Tribble is 1811924657. It was assigned to this individual provider in the NPPES registry on June 27, 2006.

Where is Cassandra Tribble located?

Cassandra Tribble practices at 5 Perryridge Rd, Greenwich, CT 06830. The listed phone number is (203) 661-5330.

What is Cassandra Tribble's specialty?

The primary specialty registered for this NPI is Anesthesiology, specializing in Pain Medicine, with taxonomy code 207LP2900X.

Is Cassandra Tribble enrolled in Medicare?

Yes. Cassandra Tribble 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 Cassandra Tribble's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Cassandra Tribble reassigns Medicare benefits to 2 organizations: North Shore - Lij Anesthesiology, PC (Chappaqua, NY) and Bridgeport Anesthesia Associates, P.C. (Bridgeport, CT). 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 Cassandra Tribble's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Cassandra Tribble accept?

Health plans from Anthem Blue Cross and Blue Shield list Cassandra Tribble 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 Cassandra Tribble affiliated with any hospitals?

According to CMS data, Cassandra Tribble is affiliated with Putnam Hospital Center.

When was this NPI record last updated?

The NPPES record for Cassandra Tribble was last updated on March 31, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.