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DR. NATHANIEL DAVID O'LEARY MD
NPI 1336726108
Family Medicine in Washington, PA

Active since March 26, 2021PECOS Enrolled
95 LEONARD AVE STE 200, WASHINGTON, PA 15301(724) 223-3100 Get Directions Write a Review

NPPES record last updated: April 22, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 22, 2024, Mar 26, 2021 (2 updates tracked since 2021).

About Dr. Nathaniel David O'leary Md NPPES

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

DR. NATHANIEL DAVID O'LEARY MD (NPI 1336726108) is an individual family medicine provider in Washington, Pennsylvania, licensed in Pennsylvania (484527) and active in the NPI registry since March 2021. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1336726108
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameDR. NATHANIEL DAVID O'LEARYCredential: MD
Location Address95 LEONARD AVE STE 200Washington, PA 15301-3368
Mailing Address2020 59th St WBradenton, FL 34209-4669 · (941) 798-6513
Phone(724) 223-3100
Sole ProprietorNo
Enumeration DateMarch 26, 2021
Last NPPES UpdateApril 22, 20242 updates tracked since enumeration
NPPES CertifiedApril 22, 2024
✔ NPI 1336726108 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in PA · 484527
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
95 LEONARD AVE STE 200, Washington, PA 15301
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Nathaniel David O'leary Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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

2

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

Washington Physician Services
Same address
Family Medicine
95 LEONARD AVE, BLDG 2 4TH FLOOR
Washington, PA 15301
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 179 clinicians in this Medicare group
NPI 1316917669 (724) 229-1756
University Of Pittsburgh Physicians
17 mi
Internal Medicine
1100 WASHINGTON AVE, SUITE 115
Carnegie, PA 15106
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 7,114 clinicians in this Medicare group
NPI 1053595942 (412) 279-8940

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.

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.
22 services21 patients
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.
19 services19 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.
18 services17 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
15 services15 patients
Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
13 services13 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.
13 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 15301 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
$84.88 typical visit price
range $54.64 – $166.87
Typical copayment $21.22 (range $13.66 – $41.71)
Most-billed visit code 99203
Established Patient
$96.82 typical visit price
range $17.33 – $135.84
Typical copayment $24.20 (range $4.33 – $33.96)
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 3

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

TEIKA TAKEDAI
Nurse Practitioner (Family)
95 LEONARD AVE STE 200
WASHINGTON, PA 15301
Washington County (724) 223-3100
DR. THOMAS MOSMAN MD
Student in an Organized Health Care Education/Training Program
95 LEONARD AVE STE 200
WASHINGTON, PA 15301
Washington County (724) 223-3100
MADELINE S CORSON-O'DONNELL CRNP
Nurse Practitioner (Family)
95 LEONARD AVE STE 200
WASHINGTON, PA 15301
Washington County (724) 223-3100

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 Nathaniel O'leary's NPI number?

The NPI number for Nathaniel O'leary is 1336726108. It was assigned to this individual provider in the NPPES registry on March 26, 2021.

Where is Nathaniel O'leary located?

Nathaniel O'leary practices at 95 Leonard Ave Ste 200, Washington, PA 15301. The listed phone number is (724) 223-3100.

What is Nathaniel O'leary's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Nathaniel O'leary enrolled in Medicare?

Yes. Nathaniel O'leary is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Nathaniel O'leary's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nathaniel O'leary reassigns Medicare benefits to 2 organizations: Washington Physician Services (Washington, PA) and University Of Pittsburgh Physicians (Carnegie, PA). Each 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 Nathaniel O'leary's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Nathaniel O'leary was last updated on April 22, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.