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LEILA S YASSA M.D.
NPI 1649217340
Internal Medicine in Newton, MA

Active since June 01, 2006PECOS Enrolled
2014 WASHINGTON ST, NEWTON-WELLESLEY HOSPITAL, GREEN BLDG, SUITE 460, NEWTON, MA 02462(617) 243-5812 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Leila S Yassa M.d. NPPES

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

LEILA S YASSA M.D. (NPI 1649217340) is an individual internal medicine provider in Newton, Massachusetts, licensed in Massachusetts (223290) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1649217340
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameLEILA S YASSACredential: M.D.
Location Address2014 WASHINGTON ST, NEWTON-WELLESLEY HOSPITAL, GREEN BLDG, SUITE 460Newton, MA 02462-1607
Mailing AddressPo Box 9142Charlestown, MA 02129-9142 · (617) 243-5812
Phone(617) 243-5812
Sole ProprietorNo
Enumeration DateJune 1, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1649217340 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MA · 223290
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.
2014 WASHINGTON ST, Newton, MA 02462
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Leila S Yassa 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02462 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
$144.11 typical visit price
range $63.72 – $189.86
Typical copayment $36.02 (range $15.93 – $47.46)
Most-billed visit code 99204
Established Patient
$111.18 typical visit price
range $21.07 – $155.29
Typical copayment $27.79 (range $5.26 – $38.82)
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.

Referred Medical Equipment & Supplies CMS DME claims 2

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

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
7 suppliers14 claims54 services$5.97 avg. paid by Medicare
Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
3 suppliers69 claims69 services$178.86 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.

DR. ANDREA L RUSSO M.D.
Radiology (Radiation Oncology)
2014 WASHINGTON ST
NEWTON, MA 02462
Middlesex County (617) 219-1200
MAUREEN LAVELLE LICSW
Social Worker (Clinical)
2014 WASHINGTON ST
NEWTON, MA 02462
Middlesex County (617) 243-6664
SHALYNN DOHERTY
Physician Assistant
2014 WASHINGTON ST
NEWTON, MA 02462
Middlesex County (617) 831-7100
MR. KEVIN YAN KOENDERS PA-C
Physician Assistant (Surgical)
2014 WASHINGTON ST, DEPARTMENT OF ORTHOPEDICS
NEWTON, MA 02462
Middlesex County (617) 219-1674
NATHAN DANIEL BUCKLEY PA-C
Physician Assistant (Surgical)
2014 WASHINGTON ST
NEWTON, MA 02462
Middlesex County (617) 243-6000
DR. RONALD KENNETH PYE M.D.
Pediatrics (Neonatal-Perinatal Medicine)
2014 WASHINGTON ST, SCN 6 NORTH
NEWTON, MA 02462
Middlesex County (617) 243-6296
DR. TODD EARL ABBOTT M.D.
Pathology (Anatomic Pathology & Clinical Pathology)
2014 WASHINGTON ST, NEWTON-WELLESLEY HOSPITAL
NEWTON, MA 02462
Middlesex County (434) 964-1637
DIANE MARIE POULIN RN,NP
Nurse Practitioner (Adult Health)
2014 WASHINGTON ST, NEWTON WELLESLEY HOSPITAL DEPT. OF ANESTHESIA
NEWTON, MA 02462
Middlesex County (617) 243-6298

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 Leila Yassa's NPI number?

The NPI number for Leila Yassa is 1649217340. It was assigned to this individual provider in the NPPES registry on June 1, 2006.

Where is Leila Yassa located?

Leila Yassa practices at 2014 Washington St Newton-Wellesley Hospital, Green Bldg, Suite 460, Newton, MA 02462. The listed phone number is (617) 243-5812.

What is Leila Yassa's specialty?

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

Is Leila Yassa enrolled in Medicare?

Yes. Leila Yassa is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Leila Yassa 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.