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FELICE R ZWAS M.D.
NPI 1225059116
Internal Medicine - Gastroenterology in Greenwich, CT

Active since July 23, 2006PECOS EnrolledAccepts Medicare Assignment
85.07/100
CMS Quality Rating
500 W PUTNAM AVE, SUITE 100, GREENWICH, CT 06830(203) 863-2900(203) 863-2901 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Felice R Zwas M.d. NPPES

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

FELICE R ZWAS M.D. (NPI 1225059116) is an individual gastroenterology provider in Greenwich, Connecticut, licensed in Connecticut (028878) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS and is a graduate of Columbia University College Of Physicians And Surgeons (1980).

NPPES Registry Identity

NPI1225059116
Entity TypeIndividualFemale
Primary Taxonomy207RG0100X
Provider Legal NameFELICE R ZWASCredential: M.D.
Location Address500 W PUTNAM AVE, SUITE 100Greenwich, CT 06830-6086
Mailing Address500 W Putnam Ave, Suite 100Greenwich, CT 06830-6086 · (203) 863-2900 · Fax (203) 863-2901
Phone(203) 863-2900
Fax(203) 863-2901
Sole ProprietorYes
Medical School CMSColumbia University College Of Physicians And SurgeonsGraduated 1980
Enumeration DateJuly 23, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1225059116 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in CT · 028878
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
500 W PUTNAM AVE, Greenwich, CT 06830
Open in Google Maps ↗

Other Identifiers 4

Other028878CT · Commercial
Other010028878CT01CT · Anthem
Medicaid1288788CT
Medicare UPINB38638CT

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Felice R Zwas 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 ID1759480353
PECOS Enrollment IDI20101004001235
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.

Areas of Expertise CMS Part B claims 14

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.

Biopsy of large bowel using a flexible endoscope 45380
A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.
181 services180 patients
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.
158 services138 patients
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239
This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.
131 services125 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
95 services95 patients
Infusion, normal saline solution, 250 cc J7050
An infusion of normal saline solution, 250 cc, involves administering a sterile saltwater solution into your body through a vein, usually in your arm. This helps to replenish fluids, maintain hydration, and balance electrolytes in your body.
43 services18 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.
41 services40 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06830 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
$138.84 typical visit price
range $60.82 – $183.10
Typical copayment $34.71 (range $15.20 – $45.77)
Most-billed visit code 99204
Established Patient
$106.68 typical visit price
range $19.76 – $149.26
Typical copayment $26.67 (range $4.94 – $37.31)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

85.07/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality89.7
Promoting Interoperability83
Improvement Activities40
Cost68.33

Reported Quality Measures

Breast Cancer Screening
Percentage of women 50-74 years of age who had a mammogram to screen for breast cancer
40%860 patients2/55-star benchmark: 92%
Cervical Cancer Screening
Percentage of women 21-64 years of age who were screened for cervical cancer using either of the following criteria: - Women age 21-64 who had cervical cytology performed every 3 years - Women age 30-64 who had cervical cytology/human papillomavirus (HPV)…
56%683 patients
Colorectal Cancer Screening
Percentage of adults 50-75 years of age who had appropriate screening for colorectal cancer
82%1,219 patients4/55-star benchmark: 85%
Documentation of Current Medications in the Medical Record
Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.
89%1,887 patients3/55-star benchmark: 100%
Pneumococcal Vaccination Status for Older Adults
Percentage of patients 65 years of age and older who have ever received a pneumococcal vaccine
3%674 patients1/55-star benchmark: 90%
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…
44%1,692 patients2/55-star benchmark: 97%
Preventive Care and Screening: Influenza Immunization
Percentage of patients aged 6 months and older seen for a visit between October 1 and March 31 who received an influenza immunization OR who reported previous receipt of an influenza immunization
14%552 patients1/55-star benchmark: 88%
Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention
Percentage of patients aged 18 years and older who were screened for tobacco use one or more times within 24 months AND who received tobacco cessation intervention if identified as a tobacco user
Patients tobacco: 96% · 139 patients
100%139 patients
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 4

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Ostomy skin barrier, powder, per oz A4371
DME-Orthotic Devices · category DF010N
3 suppliers11 claims19 services$3.52 avg. paid by Medicare
Ostomy skin barrier, with flange (solid, flexible, or accordion), extended wear, with built-in convexity, 4 x 4 inches or smaller, each A4407
DME-Orthotic Devices · category DF010N
2 suppliers11 claims360 services$8.27 avg. paid by Medicare
Ostomy pouch, drainable; for use on barrier with non-locking flange, with filter (2 piece system), each A4425
DME-Orthotic Devices · category DF010N
2 suppliers14 claims280 services$3.25 avg. paid by Medicare
Skin barrier, wipes or swabs, each A5120
DME-Orthotic Devices · category DF010N
2 suppliers11 claims375 services$0.21 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

CENTER FOR GASTROINTESTINAL MEDICINE OF FAIRFIELD & WESTCHESTER, P.C.
Internal Medicine (Gastroenterology)
500 W PUTNAM AVE, SUITE 100
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 863-2900
JESSICA DENNISON RN
Nurse Practitioner (Psychiatric/Mental Health)
500 W PUTNAM AVE
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 863-3316
TAYLOR PECORA-SAIPE RN, NP
Nurse Practitioner (Pediatrics)
500 W PUTNAM AVE
GREENWICH, CT 06830
Western Connecticut Planning Region (877) 925-3637
DR. ELISA MAMBRINO PH.D.
Psychologist
500 W PUTNAM AVE
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 536-5907
SCOTT JORDAN KRAMER M.D.
Internal Medicine (Gastroenterology)
500 W PUTNAM AVE, SUITE 100
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 863-2900
DR CHASE WHITLOW DDS PLLC
Dentist (General Practice)
500 W PUTNAM AVE
GREENWICH, CT 06830
Western Connecticut Planning Region (703) 674-6899
JENNIFER LEIGH BARRO MD
Internal Medicine (Gastroenterology)
500 W PUTNAM AVE, SUITE 100
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 863-2900
THOMAS MILUCCI DPT
Physical Therapist
500 W PUTNAM AVE
GREENWICH, CT 06830
Western Connecticut Planning Region (203) 863-2882

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 Felice Zwas's NPI number?

The NPI number for Felice Zwas is 1225059116. It was assigned to this individual provider in the NPPES registry on July 23, 2006.

Where is Felice Zwas located?

Felice Zwas practices at 500 W Putnam Ave Suite 100, Greenwich, CT 06830. The listed phone number is (203) 863-2900.

What is Felice Zwas's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Felice Zwas enrolled in Medicare?

Yes. Felice Zwas 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.

When was this NPI record last updated?

The NPPES record for Felice Zwas was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.