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MARK ILYAGU MEDICAL PC
NPI 1619699915
Internal Medicine in Valley Stream, NY

Active since September 13, 2022
70 E SUNRISE HWY STE 500, VALLEY STREAM, NY 11581(717) 716-7107 Get Directions Write a Review

NPPES record last updated: August 25, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 25, 2026, Apr 2, 2025, Dec 3, 2022 and 1 more (4 updates tracked since 2022).

About Mark Ilyagu Medical Pc NPPES

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

MARK ILYAGU MEDICAL PC (NPI 1619699915) is a healthcare organization registered as an internal medicine in Valley Stream, New York and active in the NPI registry since September 2022. The organization lists Mark Ilyagu, Md, as its authorized official.

NPPES Registry Identity

NPI1619699915
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameMARK ILYAGU MEDICAL PC
Location Address70 E SUNRISE HWY STE 500Valley Stream, NY 11581-1233
Mailing Address221 Sea Breeze Ave Apt Ph2bBrooklyn, NY 11224-3454 · (717) 716-7107
Phone(717) 716-7107
Organization SubpartNo
Authorized OfficialMark IlyaguMd · (717) 716-7107
Enumeration DateSeptember 13, 2022
Last NPPES UpdateAugust 25, 20264 updates tracked since enumeration
NPPES CertifiedAugust 25, 2026
✔ NPI 1619699915 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
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.
70 E SUNRISE HWY STE 500, Valley Stream, NY 11581
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mark Ilyagu Medical Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

10

Medicare enrollment records show 10 clinicians reassign Medicare billing to Mark Ilyagu Medical PC, which bills Medicare for the services they deliver. Of these, 1 practice within 10 miles. They are listed nearest first.

Clinicians by Medicare Specialty 2

Nurse Practitioner9
Internal Medicine1

Clinicians, nearest first (10)

Katherine Entress
Nurse Practitioner
NPI 1598443871
6243A WOODHAVEN BLVD
Rego Park, NY 11374
(718) 497-1429
✔ PECOS✔ Accepts Medicare9.6 mi
Shuangshuang Weng, FNP
Nurse Practitioner
NPI 1568831998
2035 120TH ST 2FL
College Point, NY 11356
(917) 518-0018
✔ PECOS11 mi
Mark Ilyagu, MD
Internal Medicine
NPI 1073994711
2183A RALPH AVE
Brooklyn, NY 11234
(717) 716-7107
✔ PECOS11 mi
Tanya Bartley, NP
Nurse Practitioner
NPI 1902672306
1450 ALLERTON AVE FRNT A
Bronx, NY 10469
(646) 281-9679
✔ PECOS16 mi
Kachi Nweke, NP
Nurse Practitioner
NPI 1245462084
153 STEVENS AVENUE #4
Mount Vernon, NY 10550
(914) 668-8080
✔ PECOS19 mi
Watson Jean-Baptiste, FNP
Nurse Practitioner
NPI 1487913737
210 WESTCHESTER AVE
White Plains, NY 10604
(914) 681-3100
✔ PECOS26 mi
Shellyann Nakagawa, NP
Nurse Practitioner
NPI 1447547856
100 WOODS RD
Valhalla, NY 10595
(914) 493-7000
✔ PECOS30 mi
Camile Lee, NP
Nurse Practitioner
NPI 1366181067
292 LONG RIDGE RD STE 206
Stamford, CT 06902
(203) 276-7213
✔ PECOS30 mi
Merlyn Jacobs, FNP-C
Nurse Practitioner
NPI 1811718729
3602 HOMESTEAD CT
Peekskill, NY 10566
(914) 552-4607
✔ PECOS44 mi
Rashmi Sehgal
Nurse Practitioner
NPI 1174170872
121 ROUTE 31 STE 1000
Flemington, NJ 08822
(908) 788-6373
✔ PECOS61 mi

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

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 Mark Ilyagu Medical PC's NPI number?

The NPI number for Mark Ilyagu Medical PC is 1619699915. It was assigned to this organization in the NPPES registry on September 13, 2022.

Where is Mark Ilyagu Medical PC located?

Mark Ilyagu Medical PC is located at 70 E Sunrise Hwy Ste 500, Valley Stream, NY 11581. The listed phone number is (717) 716-7107.

What is Mark Ilyagu Medical PC's specialty?

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

Is Mark Ilyagu Medical PC enrolled in Medicare?

Yes. Mark Ilyagu Medical PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Mark Ilyagu Medical PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 10 clinicians in 2 Medicare specialties reassign their Medicare billing to Mark Ilyagu Medical PC. A 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 the clinician's services. The largest specialties are Nurse Practitioner (9) and Internal Medicine (1). Of these, 1 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Mark Ilyagu Medical PC was last updated on August 25, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 60 days 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.