JOHN ISAIAH OREILLY M.D.
NPI 1356579155
Internal Medicine - Infectious Disease in Las Vegas, NV

Q: What is John Oreilly's NPI number?

The NPI number for John Oreilly is 1356579155. It was assigned to this individual provider in the NPPES registry on June 30, 2009.

Q: What is John Oreilly's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Q: When was this NPI record last updated?

The NPPES record for John Oreilly was last updated on September 24, 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.

Active since June 30, 2009PECOS EnrolledAccepts Medicare Assignment

2435 FIRE MESA ST STE 120, LAS VEGAS, NV 89128(702) 968-2437(702) 479-1796 Get Directions Write a Review

NPPES record last updated: September 24, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 24, 2021, Feb 25, 2017, Mar 31, 2016 (3 updates tracked since 2016).

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About John Isaiah Oreilly M.d. NPPES

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

JOHN ISAIAH OREILLY M.D. (NPI 1356579155) is an individual infectious disease provider in Las Vegas, Nevada, licensed in Nevada (21365) and active in the NPI registry since June 2009. He is enrolled in Medicare PECOS, is affiliated with Sunrise Hospital And Medical Center, and is a graduate of Tulane University School Of Medicine (2016).

NPPES Registry Identity

NPI1356579155

Entity TypeIndividualMale

Primary Taxonomy207RI0200X

Provider Legal NameJOHN ISAIAH OREILLYCredential: M.D.

Location Address2435 FIRE MESA ST STE 120Las Vegas, NV 89128-9009

Mailing Address622 W 168th StNew York, NY 10032-3720 · (212) 305-6262

Phone(702) 968-2437

Fax(702) 479-1796

Sole ProprietorNo

Medical School CMSTulane University School Of MedicineGraduated 2016

Enumeration DateJune 30, 2009

Last NPPES UpdateSeptember 24, 20213 updates tracked since enumeration

NPPES CertifiedSeptember 24, 2021

✔ NPI 1356579155 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RI0200X

License✔ Licensed in NV · 21365

Definition

An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.

Also ListedInternal MedicineTaxonomy 207R00000X · License 21365 (NV)

2435 FIRE MESA ST STE 120, Las Vegas, NV 89128

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter Health.Insurance ›

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

John Isaiah Oreilly 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 ID749612794

PECOS Enrollment IDI20210927001356

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 Reassignments

Medicare enrollment records show John Oreilly reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Comprehensive Infectious Disease Of Nevada

4.9 mi

Infectious Disease

801 S RANCHO DR STE B
Las Vegas, NV 89106

Reassigned Medicare billing, Nevada enrollment
11 clinicians in this Medicare group

NPI 1275102832 (702) 844-6333

Babak Hooshmand MD PLLC

10 mi

Internal Medicine

4472 S EASTERN AVE
Las Vegas, NV 89119

Reassigned Medicare billing, Nevada enrollment
14 clinicians in this Medicare group

NPI 1588120240 (702) 844-6333

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

Areas of Expertise CMS Part B claims 6

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

1,286 services428 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

1,168 services402 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.

534 services468 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

101 services42 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

29 services17 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

12 services12 patients

Hospital Affiliations CMS Care Compare 5

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

Sunrise Hospital And Medical Center

Acute Care Hospitals · Las Vegas, NV

1/5 CMS rating

OwnershipProprietary

CMS Certification Number290003

Location3186 S Maryland PkwyLas Vegas, NV 89109 · Clark County

Emergency services

Valley Hospital Medical Center

Acute Care Hospitals · Las Vegas, NV

2/5 CMS rating

OwnershipProprietary

CMS Certification Number290021

Location620 Shadow LaneLas Vegas, NV 89106 · Clark County

Emergency services

Mountainview Hospital

Acute Care Hospitals · Las Vegas, NV

4/5 CMS rating

OwnershipProprietary

CMS Certification Number290039

Location3100 N Tenaya WayLas Vegas, NV 89128 · Clark County

Emergency services Birthing friendly

Saint Rose Dominican Hospitals - Siena Campus

Acute Care Hospitals · Henderson, NV

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number290045

Location3001 St Rose ParkwayHenderson, NV 89052 · Clark County

Emergency services Birthing friendly

Southern Hills Hospital And Medical Center

Acute Care Hospitals · Las Vegas, NV

4/5 CMS rating

OwnershipProprietary

CMS Certification Number290047

Location9300 West Sunset RdLas Vegas, NV 89148 · Clark County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 89128 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

$131.25 typical visit price

range $57.07 – $173.24

Typical copayment $32.81 (range $14.26 – $43.31)

Most-billed visit code 99204

Established Patient

$100.60 typical visit price

range $18.27 – $140.96

Typical copayment $25.15 (range $4.56 – $35.24)

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 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ANGELINE PRABHU

Internal Medicine (Infectious Disease)