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DR. LIAM GERARD O'RIORDAN DO
NPI 1235626979
Emergency Medicine in Syracuse, NY

Active since April 18, 2018PECOS EnrolledAccepts Medicare Assignment
301 PROSPECT AVE, SYRACUSE, NY 13203(315) 448-5111 Get Directions Write a Review

NPPES record last updated: March 7, 2022. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Mar 7, 2022, Apr 18, 2018 (2 updates tracked since 2018).

About Dr. Liam Gerard O'riordan Do NPPES

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

DR. LIAM GERARD O'RIORDAN DO (NPI 1235626979) is an individual emergency medicine provider in Syracuse, New York, licensed in New York (311919) and active in the NPI registry since April 2018. He is enrolled in Medicare PECOS, is affiliated with Nyack Hospital, and is a graduate of Touro Un Col Of Osteopathic Medicine, New York (2018).

NPPES Registry Identity

NPI1235626979
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDR. LIAM GERARD O'RIORDANCredential: DO
Location Address301 PROSPECT AVESyracuse, NY 13203-1807
Mailing Address25 Fox RdEast Setauket, NY 11733-1873 · (631) 697-8245
Phone(315) 448-5111
Sole ProprietorYes
Medical School CMSTouro Un Col Of Osteopathic Medicine, New YorkGraduated 2018
Enumeration DateApril 18, 2018
Last NPPES UpdateMarch 7, 20222 updates tracked since enumeration
NPPES CertifiedMarch 7, 2022
✔ NPI 1235626979 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in NY · 311919
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
301 PROSPECT AVE, Syracuse, NY 13203
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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 and accepts Medicare assignment

Dr. Liam Gerard O'riordan Do 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 ID4688078694
PECOS Enrollment IDI20210812000248
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.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
479 services453 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
136 services131 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
64 services64 patients
Emergency department visit with low level of medical decision making 99283
An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.
52 services29 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
15 services15 patients

Hospital Affiliations CMS Care Compare

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

Nyack Hospital

Acute Care Hospitals · Nyack, NY
2/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number330104
Location160 North Midland AvenueNyack, NY 10960 · Rockland County
Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 13203 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
$84.93 typical visit price
range $54.87 – $166.88
Typical copayment $21.23 (range $13.71 – $41.72)
Most-billed visit code 99203
Established Patient
$97.08 typical visit price
range $17.54 – $136.14
Typical copayment $24.27 (range $4.38 – $34.03)
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. JOSHUA AUSTIN JOHNSON DO
Family Medicine
301 PROSPECT AVE
SYRACUSE, NY 13203
Onondaga County (315) 448-5111
TYLER GRANT RN
Nurse Anesthetist, Certified Registered
301 PROSPECT AVE
SYRACUSE, NY 13203
Onondaga County (315) 448-5111
MELISSA SCHREIBER RD
Dietitian, Registered
301 PROSPECT AVE
SYRACUSE, NY 13203
Onondaga County (315) 726-7755
DR. JOAN E THORNTON MD
Anesthesiology
301 PROSPECT AVE, DEPT OF ANESTHESIA
SYRACUSE, NY 13203
Onondaga County (315) 299-5451
DR. MIHAEL J PUC MD
Anesthesiology
301 PROSPECT AVE, DEPARTMENT OF ANESTHESIA
SYRACUSE, NY 13203
Onondaga County (315) 448-5440
DAVID J. SEELEY M.D.
Emergency Medicine
301 PROSPECT AVE
SYRACUSE, NY 13203
Onondaga County (315) 448-5101
PAMELA MARIE HOWARD LPN
Licensed Practical Nurse
301 PROSPECT AVE, ST. JOSEPH'S HOSPITAL
SYRACUSE, NY 13203
Onondaga County (315) 448-5111
SAMI SAMAIN MD
Student in an Organized Health Care Education/Training Program
301 PROSPECT AVE
SYRACUSE, NY 13203
Onondaga County (315) 448-5536

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 Liam O'riordan's NPI number?

The NPI number for Liam O'riordan is 1235626979. It was assigned to this individual provider in the NPPES registry on April 18, 2018.

Where is Liam O'riordan located?

Liam O'riordan practices at 301 Prospect Ave, Syracuse, NY 13203. The listed phone number is (315) 448-5111.

What is Liam O'riordan's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Liam O'riordan enrolled in Medicare?

Yes. Liam O'riordan 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 Liam O'riordan affiliated with any hospitals?

According to CMS data, Liam O'riordan is affiliated with Nyack Hospital.

When was this NPI record last updated?

The NPPES record for Liam O'riordan was last updated on March 7, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.