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DONNA PHANUMAS M.D.
NPI 1255352167
Internal Medicine in Greenwich, CT

Active since July 23, 2006PECOS Enrolled
70.22/100
CMS Quality Rating
5 PERRYRIDGE RD, CENTER FOR HEALTHY AGING, GREENWICH, CT 06830(203) 863-4376(203) 863-4711 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Donna Phanumas M.d. NPPES

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

DONNA PHANUMAS M.D. (NPI 1255352167) is an individual internal medicine provider in Greenwich, Connecticut, licensed in Connecticut (038375) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1255352167
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDONNA PHANUMASCredential: M.D.
Location Address5 PERRYRIDGE RD, CENTER FOR HEALTHY AGINGGreenwich, CT 06830-4608
Mailing Address5 Perryridge Rd, Center For Healthy AgingGreenwich, CT 06830-4608 · (203) 863-4376 · Fax (203) 863-4711
Phone(203) 863-4376
Fax(203) 863-4711
Sole ProprietorNo
Enumeration DateJuly 23, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1255352167 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CT · 038375
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
5 PERRYRIDGE RD, Greenwich, CT 06830
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Other Identifiers 1

Medicare UPING94669

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Donna Phanumas M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Donna Phanumas reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Greenwich Hospital
0.3 mi
General Acute Care Hospital
5 PERRYRIDGE RD
Greenwich, CT 06830
  • Reassigned Medicare billing, Connecticut enrollment
  • 268 clinicians in this Medicare group
NPI 1609846088 (203) 863-3000
Family Centers Inc
0.9 mi
Mental Health (Including Community Mental Health Center)
20 BRIDGE ST
Greenwich, CT 06830
  • Reassigned Medicare billing, Connecticut enrollment
  • 30 clinicians in this Medicare group
NPI 1265477780 (203) 629-2822

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

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.

70.22/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality94.44
Promoting Interoperability73
Improvement Activities40
Cost28.81

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 Donna Phanumas's NPI number?

The NPI number for Donna Phanumas is 1255352167. It was assigned to this individual provider in the NPPES registry on July 23, 2006.

Where is Donna Phanumas located?

Donna Phanumas practices at 5 Perryridge Rd Center For Healthy Aging, Greenwich, CT 06830. The listed phone number is (203) 863-4376.

What is Donna Phanumas's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Donna Phanumas enrolled in Medicare?

Yes. Donna Phanumas is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Donna Phanumas's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Donna Phanumas reassigns Medicare benefits to 2 organizations: Greenwich Hospital (Greenwich, CT) and Family Centers Inc (Greenwich, 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 Donna Phanumas's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Donna Phanumas 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.