1. Home
  2. Directory
  3. New York
  4. West Islip
  5. Internal Medicine
  6. NPI Profile

DR. YONAEL AYINALEM MD
NPI 1932857901
Internal Medicine in West Islip, NY

Active since March 17, 2022PECOS EnrolledAccepts Medicare Assignment
1000 MONTAUK HWY, WEST ISLIP, NY 11795(631) 376-3000 Get Directions Write a Review

NPPES record last updated: August 5, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Yonael Ayinalem Md NPPES

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

DR. YONAEL AYINALEM MD (NPI 1932857901) is an individual internal medicine provider in West Islip, New York, licensed in California (A209346) and active in the NPI registry since March 2022. He is enrolled in Medicare PECOS, is affiliated with Good Samaritan Hospital Medical Center, and is a graduate of Other (2022).

NPPES Registry Identity

NPI1932857901
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. YONAEL AYINALEMCredential: MD
Location Address1000 MONTAUK HWYWest Islip, NY 11795-4927
Mailing Address1000 Montauk HwyWest Islip, NY 11795-4927 · (631) 376-3000
Phone(631) 376-3000
Sole ProprietorYes
Medical School CMSOtherGraduated 2022
Enumeration DateMarch 17, 2022
Last NPPES UpdateAugust 5, 2026
NPPES CertifiedAugust 5, 2026
✔ NPI 1932857901 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Licenses✔ Licensed in CA · A209346✔ Licensed in NY · 337759-01
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.
1000 MONTAUK HWY, West Islip, NY 11795
Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

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. Yonael Ayinalem 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 ID2264940949
PECOS Enrollment IDI20250804002812
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 Reassignment

Medicare enrollment records show Yonael Ayinalem reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Southwest Suffolk Medical PC
3.8 mi
Family Medicine
502 S WELLWOOD AVE
Lindenhurst, NY 11757
  • Reassigned Medicare billing, New York enrollment
  • 348 clinicians in this Medicare group
NPI 1770919763 (631) 226-8600

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

Hospital Affiliations CMS Care Compare

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

Good Samaritan Hospital Medical Center

Acute Care Hospitals · West Islip, NY
1/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number330286
Location1000 Montauk HighwayWest Islip, NY 11795 · Suffolk County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11795 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
$154.28 typical visit price
range $67.40 – $203.53
Typical copayment $38.57 (range $16.85 – $50.88)
Most-billed visit code 99204
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
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.

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. ANTHONY NGUYEN MD
Obstetrics & Gynecology
1000 MONTAUK HWY
WEST ISLIP, NY 11795
Suffolk County (631) 376-4163
LAUREN MARIE CHOBAN DO
Emergency Medicine
1000 MONTAUK HWY
WEST ISLIP, NY 11795
Suffolk County (631) 376-3000
MISS MUNMUN AZIZ MD
Student in an Organized Health Care Education/Training Program
1000 MONTAUK HWY
WEST ISLIP, NY 11795
Suffolk County (929) 340-5665
TERENCE JAMES OMALLEY MD
Anesthesiology
1000 MONTAUK HWY, GOOD SAMARITAN HOSPITAL MEDICAL CENTER
WEST ISLIP, NY 11795
Suffolk County (631) 376-4088
PIOTR PAPUZINSKI MD
Internal Medicine
1000 MONTAUK HWY
WEST ISLIP, NY 11795
Suffolk County (631) 376-3000
LAURIE WATERS PA
Physician Assistant
1000 MONTAUK HWY
WEST ISLIP, NY 11795
Suffolk County (631) 376-3000
SHELLEY MATSON RN
Registered Nurse
1000 MONTAUK HWY
WEST ISLIP, NY 11795
Suffolk County (631) 376-3000
RIDDA MANZOOR MD
Student in an Organized Health Care Education/Training Program
1000 MONTAUK HWY
WEST ISLIP, NY 11795
Suffolk County (631) 376-4163

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 Yonael Ayinalem's NPI number?

The NPI number for Yonael Ayinalem is 1932857901. It was assigned to this individual provider in the NPPES registry on March 17, 2022.

Where is Yonael Ayinalem located?

Yonael Ayinalem practices at 1000 Montauk Hwy, West Islip, NY 11795. The listed phone number is (631) 376-3000.

What is Yonael Ayinalem's specialty?

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

Is Yonael Ayinalem enrolled in Medicare?

Yes. Yonael Ayinalem 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 organization bills Medicare for Yonael Ayinalem's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Yonael Ayinalem reassigns Medicare benefits to Southwest Suffolk Medical PC (Lindenhurst, NY). The 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 Yonael Ayinalem's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Yonael Ayinalem affiliated with any hospitals?

According to CMS data, Yonael Ayinalem is affiliated with Good Samaritan Hospital Medical Center.

When was this NPI record last updated?

The NPPES record for Yonael Ayinalem was last updated on August 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.