DR. STEPHEN J ILARIO M.D.
NPI 1164425419
Orthopaedic Surgery in Largo, MD

Active since May 31, 2005PECOS EnrolledAccepts Medicare Assignment
1221 MERCANTILE LN, LARGO, MD 20774(301) 618-5796(301) 618-5585 Get Directions Write a Review

NPPES record last updated: June 6, 2021. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Stephen J Ilario M.d. NPPES

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

DR. STEPHEN J ILARIO M.D. (NPI 1164425419) is an individual orthopaedic surgery provider in Largo, Maryland, licensed in Maryland (D65059) and active in the NPI registry since May 2005. He is enrolled in Medicare PECOS, is affiliated with Holy Cross Hospital, and is a graduate of State University Of New York Downstate Medical Center (1996).

NPPES Registry Identity

NPI1164425419
Entity TypeIndividualMale
Primary Taxonomy207X00000X
Provider Legal NameDR. STEPHEN J ILARIOCredential: M.D.
Location Address1221 MERCANTILE LNLargo, MD 20774-5374
Mailing Address2501 Porter St Nw Apt 310Washington, DC 20008-1250 · (914) 450-1979
Fax(301) 618-5585
Sole ProprietorNo
Medical School CMSState University Of New York Downstate Medical CenterGraduated 1996
Enumeration DateMay 31, 2005
Last NPPES UpdateJune 6, 2021
NPPES CertifiedJune 6, 2021
NPI 1164425419 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207X00000X
License Licensed in MD · D65059
Definition
An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.
1221 MERCANTILE LN, Largo, MD 20774

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

Dr. Stephen J Ilario 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 ID7214911023
PECOS Enrollment IDI20091112000412, I20211104001611
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.

Hospital Affiliations CMS Care Compare

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

Holy Cross Hospital

Acute Care Hospitals · Silver Spring, MD
2/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number210004
Location1500 Forest Glen RoadSilver Spring, MD 20910 · Montgomery County
Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20774 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
$100.31 typical visit price
range $65.18 – $194.86
Typical copayment $25.07 (range $16.29 – $48.71)
Most-billed visit code 99203
Established Patient
$80.66 typical visit price
range $21.40 – $158.88
Typical copayment $20.16 (range $5.35 – $39.72)
Most-billed visit code 99213
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.

Psychiatry & Neurology (Psychiatry)
1221 MERCANTILE LN
LARGO, MD 20774
Anesthesiology
1221 MERCANTILE LN
UPPER MARLBORO, MD 20774
Internal Medicine
1221 MERCANTILE LN, KAISER PERMANENTE LARGO MEDICAL CENTER
LARGO, MD 20774
Obstetrics & Gynecology (Maternal & Fetal Medicine)
1221 MERCANTILE LN, DEPT OF OBGYN
LARGO, MD 20774
Anesthesiology
1221 MERCANTILE LN
UPPER MARLBORO, MD 20774
Physician Assistant
1221 MERCANTILE LN, KAISER PERMANENTE LARGO MEDICAL CENTER
LARGO, MD 20774
Urology
1221 MERCANTILE LN, KAISER PERMANENTE DEPARTMENT OF UROLOGY
LARGO, MD 20774
Obstetrics & Gynecology
1221 MERCANTILE LN
UPPER MARLBORO, MD 20774

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 Stephen Ilario's NPI number?

The NPI number for Stephen Ilario is 1164425419. It was assigned to this individual provider in the NPPES registry on May 31, 2005.

Where is Stephen Ilario located?

Stephen Ilario practices at 1221 Mercantile Ln, Largo, MD 20774. The listed phone number is (301) 618-5796.

What is Stephen Ilario's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Is Stephen Ilario enrolled in Medicare?

Yes. Stephen Ilario 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.

Is Stephen Ilario affiliated with any hospitals?

According to CMS data, Stephen Ilario is affiliated with Holy Cross Hospital.

When was this NPI record last updated?

The NPPES record for Stephen Ilario was last updated on June 6, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.