THOMAS M OCONNOR DO
NPI 1144213992
Surgery - Vascular Surgery in Lancaster, PA

Q: What is Thomas Oconnor's NPI number?

The NPI number for Thomas Oconnor is 1144213992. It was assigned to this individual provider in the NPPES registry on August 26, 2005.

Q: What is Thomas Oconnor's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Vascular Surgery, with taxonomy code 2086S0129X.

Q: When was this NPI record last updated?

The NPPES record for Thomas Oconnor was last updated on June 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 months 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 August 26, 2005PECOS EnrolledAccepts Medicare Assignment

2102 HARRISBURG PIKE, LANCASTER, PA 17601(717) 544-9400(717) 544-9401 Get Directions Write a Review

NPPES record last updated: June 6, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jun 6, 2025, Aug 20, 2018, Jan 9, 2017 and 1 more (4 updates tracked since 2017).

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About Thomas M Oconnor Do NPPES

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

THOMAS M OCONNOR DO (NPI 1144213992) is an individual vascular surgery provider in Lancaster, Pennsylvania, licensed in Pennsylvania (OS009572L) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS, is affiliated with Lancaster General Hospital, and is a graduate of New York College Of Osteo Medicine Of New York Institute Of Technology (1987).

NPPES Registry Identity

NPI1144213992

Entity TypeIndividualMale

Primary Taxonomy2086S0129X

Provider Legal NameTHOMAS M OCONNORCredential: DO

Location Address2102 HARRISBURG PIKELancaster, PA 17601-2644

Mailing Address2102 Harrisburg PikeLancaster, PA 17601-2644 · (717) 733-4644

Phone(717) 544-9400

Fax(717) 544-9401

Sole ProprietorNo

Medical School CMSNew York College Of Osteo Medicine Of New York Institute Of TechnologyGraduated 1987

Enumeration DateAugust 26, 2005

Last NPPES UpdateJune 6, 20254 updates tracked since enumeration

NPPES CertifiedJune 6, 2025

✔ NPI 1144213992 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySurgery · Vascular SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code2086S0129X

License✔ Licensed in PA · OS009572L

Definition

A surgeon with expertise in the management of surgical disorders of the blood vessels, excluding the intracranial vessels or the heart.

Also ListedSurgeryTaxonomy 208600000X · License OS009572L (PA)

2102 HARRISBURG PIKE, Lancaster, PA 17601

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Other Identifiers 5

Other50009563PA · Capital Blue Cross

Other20020201PA · Mercy Health Plan

Other963231Blue Shield Of Pa

Medicaid001602890PA

OtherP00000115Railroad Medicare

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter Health, Ambetter Health of Delaware.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

Thomas M Oconnor 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 ID4789623596

PECOS Enrollment IDI20050502000378

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 Thomas Oconnor reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Lancaster General Medical Group

Same address

Surgery

2102 HARRISBURG PIKE
Lancaster, PA 17601

Reassigned Medicare billing, Pennsylvania enrollment
727 clinicians in this Medicare group

NPI 1265286009 (717) 544-9400

Ephrata Community Hospital

12 mi

Cardiovascular Disease

169 MARTIN AVE
Ephrata, PA 17522

Reassigned Medicare billing, Pennsylvania enrollment
27 clinicians in this Medicare group

NPI 1245377191 (717) 738-2517

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 26

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 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.

156 services130 patients

Ultrasound study of arm and leg arteries 93922

An ultrasound study of arm and leg arteries is a non-invasive procedure that uses sound waves to create images of your arteries. It helps in checking blood flow, identifying blockages, or detecting other abnormalities in your arteries.

97 services90 patients

Ultrasound of both sides of head and neck blood flow 93880

An ultrasound of the head and neck blood flow is a safe, non-invasive procedure that uses sound waves to create images of blood vessels. It helps detect abnormalities like blockages or clots, ensuring optimal blood flow.

87 services86 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

75 services75 patients

Ultrasound of one leg arteries or artery grafts 93926

An ultrasound of leg arteries or artery grafts is a non-invasive test using sound waves to create images of your blood vessels. This helps doctors assess blood flow, identify blockages, and monitor the health of grafts.

48 services43 patients

Complete ultrasound of aorta, vena cava, groin vessels or bypass grafts 93978

This procedure involves using sound waves to create images of your aorta, vena cava, groin vessels, or bypass grafts. It helps to detect abnormalities or blockages, ensuring your blood flows smoothly. It's painless and non-invasive.

42 services39 patients

Ultrasound of aorta, vena cava, groin vessels or bypass grafts 93979

This procedure involves using sound waves to create images of your aorta, vena cava, groin vessels, or bypass grafts. It helps doctors check for issues like blockages or enlargements. It's non-invasive and painless.

41 services39 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.

41 services37 patients

Ultrasonic guidance for blood vessel access 76937

Ultrasonic guidance for blood vessel access is a medical procedure where sound waves are used to create images of your blood vessels. This helps doctors to accurately locate and access the vessels for treatments or tests, ensuring safety and precision.

33 services32 patients

Ultrasound of hemodialysis access 93990

An ultrasound of hemodialysis access is a non-invasive procedure that uses sound waves to create images of your dialysis access site. It helps monitor the access site's health and detect any potential issues like blockages or narrowing.

30 services30 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.

30 services22 patients

Fluoroscopic guidance for insertion or removal of central vein access device 77001

Fluoroscopic guidance for central vein access device insertion or removal is a procedure where a special X-ray, called a fluoroscope, is used to help accurately place or remove a device in a central vein. This device aids in delivering medications or collecting blood samples.

28 services27 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

28 services28 patients

Ultrasound study of one arm or leg veins with compression and maneuvers 93971

This is a non-invasive procedure using sound waves to visualize veins in an arm or leg. It involves applying gentle pressure and performing certain movements. It helps identify any abnormal blood flow or clots, ensuring vascular health.

25 services24 patients

Review by radiologist of abdominal aorta image 75625

This is a procedure where a radiologist, a doctor specialized in medical imaging, examines an image of your abdominal aorta. The abdominal aorta is the large blood vessel that carries blood to your lower body. The radiologist checks for any abnormalities to ensure your overall vascular health.

21 services21 patients

Review by radiologist of arm or leg artery image 75710

This procedure involves a radiologist examining images of your arm or leg arteries. These images are obtained through a non-invasive method, like an ultrasound or CT scan. The radiologist reviews these images to identify any abnormalities, such as blockages or narrowing, which can affect blood flow.

21 services19 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

21 services19 patients

Insertion of needle and/or tube into hemodialysis circuit and balloon dilation of dialysis segment with review by radiologist 36902

This procedure involves inserting a needle or tube into your hemodialysis circuit, a system that cleans your blood when your kidneys can't. A balloon is then used to widen a narrow section of this circuit. A radiologist reviews the procedure to ensure accuracy.

19 services17 patients

Insertion of tunneled central venous tube for infusion (5 years or older) 36558

The insertion of a tunneled central venous tube is a procedure where a thin, flexible tube is placed into a large vein, usually in the neck or chest. This tube allows healthcare providers to give medications, fluids, or nutrients directly into your bloodstream over a longer period.

16 services16 patients

Insertion of central venous tube with port (5 years or older) 36561

A central venous tube with port is a small, flexible tube inserted into a large vein, usually in the chest. It allows for easy administration of medication, fluids, or blood products over a long period. A port is attached under the skin for easy access. It's safe for individuals aged 5 and above.

15 services15 patients

Insertion of abdominal cavity tube using an endoscope 49324

This procedure involves placing a tube into your abdominal cavity with the aid of an endoscope, a thin, flexible tube with a light and camera. It helps drain fluid or air, administer medication, or aid in diagnosis. It's done under sedation for comfort.

15 services14 patients

Insertion of tube into aorta 36200

The insertion of a tube into your aorta is a medical procedure aimed at diagnosing or treating conditions related to your heart and blood vessels. A small, flexible tube is inserted through a blood vessel and gently guided to your aorta. It's generally safe and helps your doctor get valuable information for your treatment.

13 services13 patients

Relocation of arm vein with connection to arm artery for hemodialysis 36821

This procedure involves moving a vein in your arm and connecting it to an artery. This creates a larger, stronger vein that can be used for hemodialysis, a treatment for kidney disease. It helps clean your blood when your kidneys can't.

13 services13 patients

Complete ultrasound study of arm and leg arteries 93923

This procedure involves using sound waves to produce images of your arm and leg arteries. It helps identify blockages or abnormalities that could lead to conditions like stroke or peripheral artery disease. It's non-invasive and painless.

13 services13 patients

Ultrasound of leg arteries or artery grafts 93925

An ultrasound of leg arteries or artery grafts is a non-invasive imaging test. It uses high-frequency sound waves to capture live images from inside your body, specifically your leg arteries or grafts. This helps in detecting any blockages or abnormalities.

11 services11 patients

Telephone medical discussion with physician, 5-10 minutes 99441

A telephone medical discussion with a physician is a brief, 5-10 minute call where you can discuss your health concerns. It's a convenient way to receive medical advice without needing to visit a clinic. It's important to prepare questions in advance to make the most of this time.

11 services11 patients

Hospital Affiliations CMS Care Compare

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

Lancaster General Hospital

Acute Care Hospitals · Lancaster, PA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390100

Location555 North Duke StreetLancaster, PA 17602 · Lancaster County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 17601 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

$68.36 typical visit price

range $17.33 – $135.84

Typical copayment $17.09 (range $4.33 – $33.96)

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.

MRS. ALEXIS OLIVIA STAMBAUGH CRNP

Nurse Practitioner (Family)

2102 HARRISBURG PIKE
LANCASTER, PA 17601

Lancaster County (717) 544-9400

GEORGE J OLT MD

Obstetrics & Gynecology (Gynecologic Oncology)

2102 HARRISBURG PIKE, SUITE 102
LANCASTER, PA 17601

Lancaster County (717) 544-0340

DR. MOLLY BOUCHER PHARMD

Pharmacist

2102 HARRISBURG PIKE
LANCASTER, PA 17601

Lancaster County (717) 544-0404

DR. TIMOTHY COOGAN BEER M.D.

Internal Medicine (Hematology & Oncology)

2102 HARRISBURG PIKE
LANCASTER, PA 17601

Lancaster County (717) 544-9400

KATHERINE HICKS-COURANT M.D.

Obstetrics & Gynecology (Gynecologic Oncology)

2102 HARRISBURG PIKE
LANCASTER, PA 17601

Lancaster County (717) 544-3968

ASHOK BEEDASSY M.D.

Internal Medicine (Hematology & Oncology)

2102 HARRISBURG PIKE
LANCASTER, PA 17601

Lancaster County (717) 544-3600

LANCASTER GENERAL HOSPITAL

Thoracic Surgery (Cardiothoracic Vascular Surgery)

2102 HARRISBURG PIKE
LANCASTER, PA 17601

Lancaster County (717) 544-9400

SRILATHA BANAGIRI HOSUR M.D.

Internal Medicine (Hematology & Oncology)

2102 HARRISBURG PIKE
LANCASTER, PA 17601

Lancaster County (717) 544-9400

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 Thomas Oconnor's NPI number?

The NPI number for Thomas Oconnor is 1144213992. It was assigned to this individual provider in the NPPES registry on August 26, 2005.

Where is Thomas Oconnor located?

Thomas Oconnor practices at 2102 Harrisburg Pike, Lancaster, PA 17601. The listed phone number is (717) 544-9400.

What is Thomas Oconnor's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Vascular Surgery, with taxonomy code 2086S0129X.

Is Thomas Oconnor enrolled in Medicare?

Yes. Thomas Oconnor 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.

Which organizations bill Medicare for Thomas Oconnor's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Oconnor reassigns Medicare benefits to 2 organizations: Lancaster General Medical Group (Lancaster, PA) and Ephrata Community Hospital (Ephrata, 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 Thomas Oconnor's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Thomas Oconnor accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Thomas Oconnor as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Thomas Oconnor affiliated with any hospitals?

According to CMS data, Thomas Oconnor is affiliated with Lancaster General Hospital.

When was this NPI record last updated?

The NPPES record for Thomas Oconnor was last updated on June 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 months 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.