THOMAS DANIEL CALLAHAN V MD
NPI 1023004520
Internal Medicine - Clinical Cardiac Electrophysiology in Cleveland, OH

Q: What is Thomas Callahan's NPI number?

The NPI number for Thomas Callahan is 1023004520. It was assigned to this individual provider in the NPPES registry on September 21, 2005.

Q: What is Thomas Callahan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Clinical Cardiac Electrophysiology, with taxonomy code 207RC0001X.

Q: When was this NPI record last updated?

The NPPES record for Thomas Callahan was last updated on December 10, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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 September 21, 2005PECOS EnrolledAccepts Medicare Assignment

9500 EUCLID AVE, CLEVELAND, OH 44195(800) 223-2273 Get Directions Write a Review

NPPES record last updated: December 10, 2008. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Thomas Daniel Callahan V Md NPPES

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

THOMAS DANIEL CALLAHAN V MD (NPI 1023004520) is an individual clinical cardiac electrophysiology provider in Cleveland, Ohio, licensed in Ohio (35082810) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS, is affiliated with Euclid Hospital, and is a graduate of Eastern Virginia Medical School (1999).

NPPES Registry Identity

NPI1023004520

Entity TypeIndividualMale

Primary Taxonomy207RC0001X

Provider Legal NameTHOMAS DANIEL CALLAHAN VCredential: MD

Location Address9500 EUCLID AVECleveland, OH 44195-0001

Mailing Address6000 W Creek Rd, Suite 10Independence, OH 44131-2139 · (800) 223-2273

Phone(800) 223-2273

Sole ProprietorNo

Medical School CMSEastern Virginia Medical SchoolGraduated 1999

Enumeration DateSeptember 21, 2005

Last NPPES UpdateDecember 10, 2008

✔ NPI 1023004520 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Clinical Cardiac ElectrophysiologyAllopathic & Osteopathic Physicians

Taxonomy Code207RC0001X

License✔ Licensed in OH · 35082810

Definition

A field of special interest within the subspecialty of cardiovascular disease, specialty of Internal Medicine, which involves intricate technical procedures to evaluate heart rhythms and determine appropriate treatment for them.

Also ListedInternal MedicineTaxonomy 207R00000X · License 35082810 (OH)

Also ListedInternal Medicine · Cardiovascular DiseaseTaxonomy 207RC0000X · License 35082810 (OH)

9500 EUCLID AVE, Cleveland, OH 44195

Open in Google Maps ↗

Other Identifiers 13

OtherPENDINGOH · Bwc

Medicaid2472015OH

OtherPENDINGOH · Tricare

Medicare UPINI06583

Medicare PIN7386261OH

OtherPENDINGOH · United Health Care

OtherPENDINGOH · Railroad Medicare

OtherPENDINGOH · Anthem

OtherPENDINGOH · Caresource

Medicare ID-Type UnspecifiedPENDINGOH

OtherPENDINGOH · Summa Care

OtherPENDINGOH · Kaiser

OtherPENDINGOH · Qualchoice

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Antidote Health Plan of Ohio, Inc., Oscar Insurance Corporation of Ohio.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 Daniel Callahan V Md 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 ID547246423

PECOS Enrollment IDI20040629001727

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

The Cleveland Clinic Foundation

Same address

General Acute Care Hospital

9500 EUCLID AVE
Cleveland, OH 44195

Reassigned Medicare billing, Ohio enrollment
7,608 clinicians in this Medicare group

NPI 1679525919 (216) 444-2200

Wooster Clinic, LLC

50 mi

Multi-Specialty

1740 CLEVELAND RD
Wooster, OH 44691

Reassigned Medicare billing, Ohio enrollment
837 clinicians in this Medicare group

NPI 1033135009 (330) 287-4500

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 28

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.

Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days 93294

This procedure evaluates your pacemaker system remotely for up to 90 days. It checks whether single, dual, multiple lead, or leadless pacemakers are working properly. It's a safe, convenient way to ensure your heart device is functioning optimally.

309 services135 patients

Evaluation of single, dual, or multiple lead implantable defibrillator system, remote up to 90 days 93295

This procedure involves remotely monitoring your implantable defibrillator system, which can have single, dual, or multiple leads. Over a period of up to 90 days, the system's performance is evaluated to ensure it's working properly and providing the necessary heart rhythm support.

264 services103 patients

Programming of dual lead pacemaker system 93280

Programming of a dual lead pacemaker system is a procedure to adjust your heart's pacemaker settings. This process involves a small device, called a programmer, that communicates with your pacemaker to ensure it's working optimally for your heart's needs.

200 services121 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.

158 services149 patients

Evaluation of cardiac rhythm monitor system, remote up to 30 days 93298

This procedure involves remotely monitoring your heart rhythm for up to 30 days. A small device will record your heart's activity, which can be accessed by your healthcare team. This aids in diagnosing any irregularities or issues with your heart function.

130 services17 patients

Heart rhythm review and interpretation of continous external ekg over 8-15 days 93248

This service involves wearing a device for 8-15 days that continuously records your heart's electrical activity. It helps in identifying irregular heart rhythms. The recorded data is then reviewed and interpreted by a healthcare professional for any abnormalities.

128 services125 patients

Programming of multiple lead implantable defibrillator system 93284

Programming of a multiple lead implantable defibrillator system involves adjusting settings on your implanted device to help control irregular heart rhythms. The process is non-invasive and helps ensure optimal device performance for maintaining heart health.

90 services57 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

42 services40 patients

Programming of dual lead implantable defibrillator system 93283

Programming of a dual lead implantable defibrillator system involves adjusting settings on a device implanted in your chest. This device monitors your heart rhythm and delivers electrical pulses to correct irregular heartbeats, helping maintain a healthy heart rhythm.

39 services30 patients

Programming of multiple lead pacemaker system 93281

Programming of a multiple lead pacemaker system involves adjusting settings on your pacemaker device to optimize its function. This device uses electrical impulses to regulate your heart's rhythm. The procedure ensures it's working effectively for your specific needs.

34 services19 patients

Destruction of tissue of upper heart chamber through tube to treat abnormal heart rhythm 93657

This procedure involves using a tube, or catheter, to access your upper heart chamber. Special tools are then used to destroy a small area of heart tissue causing abnormal rhythm. This helps reset your heart's regular rhythm, improving heart function.

34 services19 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.

29 services29 patients

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

29 services26 patients

Programming of single lead implantable defibrillator system 93282

Programming of a single lead implantable defibrillator system involves setting up and adjusting a device implanted in your body. This device helps regulate your heartbeat. It can detect irregular heart rhythms and provide corrective electric shocks to restore a normal heartbeat.

26 services18 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.

26 services26 patients

Electrocardiogram (ecg) up to 30 days continuous with symptom monitoring, transmission and review and report by health care professional 93272

An Electrocardiogram (ECG) is a test that records the electrical activity of your heart. For up to 30 days, a device will continuously monitor your heart's rhythm, noting any symptoms. The data is sent to a healthcare professional who reviews it and provides a report on your heart health.

25 services15 patients

Electrocardiogram (ecg) 2-day continuous with review by health care professional 93227

An Electrocardiogram (ECG) is a test that checks your heart's activity. The 2-day continuous ECG records your heart's rhythm non-stop for 48 hours. It helps to detect irregularities that may not occur during a shorter test. A healthcare professional will review the results to identify any issues.

22 services21 patients

Programming of single lead pacemaker system 93279

Programming of a single lead pacemaker system involves adjusting the pacemaker's settings to suit your heart's unique needs. This is done using a special device that communicates with the pacemaker, ensuring it helps your heart beat at an optimal rate.

22 services17 patients

Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes 99152

This procedure involves a doctor administering a medication to reduce your consciousness during a procedure. This helps in managing discomfort and anxiety. The initial application lasts for 15 minutes and is for individuals aged 5 years or older.

21 services21 patients

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.

21 services21 patients

Comprehensive electrophysiologic evaluation with catheter destruction of abnormality causing atrial fibrillation (uncoordinated contraction of upper chambers of heart) by pulmonary vein isolation 93656

This is a procedure to treat atrial fibrillation, a condition causing irregular heartbeats. It involves a detailed heart evaluation using electrophysiology. A catheter is then used to destroy the problematic area causing the issue. Specifically, isolation of the pulmonary vein is done to regulate the heartbeat.

20 services20 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.

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.

19 services19 patients

Programming of single, dual, or multiple lead or leadless pacemaker system before or after surgery 93286

Pacemaker programming is a process to set your pacemaker's pace to support your heart's needs. It can be done for single, dual, or multiple lead pacemakers, either before or after surgery. It's a safe, routine procedure to ensure optimal heart function.

17 services11 patients

Evaluation of single, dual, multiple lead or leadless pacemaker system 93288

An evaluation of a pacemaker system examines how well your heart device is working. Single, dual, multiple lead, or leadless refers to the wires that deliver electrical pulses from the pacemaker to your heart. This check ensures your heart is receiving the right amount of support from the device.

15 services14 patients

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

14 services14 patients

Evaluation of single, dual, or multiple lead implantable defibrillator system 93289

This procedure evaluates your implantable defibrillator system, which helps regulate your heart rhythm. It can involve single, dual, or multiple lead systems. It's essential to ensure the device is working correctly and adjusting to your heart's needs.

13 services11 patients

Heart rhythm review, and interpretation of continous external ekg over more than 48 hours up to 7 days 93244

A heart rhythm review involves monitoring your heart's electrical activity for more than 48 hours up to 7 days. Using a device called an external EKG, doctors can track your heartbeats to detect irregularities and help diagnose heart conditions.

11 services11 patients

Hospital Affiliations CMS Care Compare 5

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

Euclid Hospital

Acute Care Hospitals · Euclid, OH

4/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number360082

Location18901 Lake Shore BoulevardEuclid, OH 44119 · Cuyahoga County

South Pointe Hospital

Acute Care Hospitals · Warrensville Heights, OH

4/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number360144

Location20000 Harvard RoadWarrensville Heights, OH 44122 · Cuyahoga County

Cleveland Clinic

Acute Care Hospitals · Cleveland, OH

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number360180

Location9500 Euclid AvenueCleveland, OH 44195 · Cuyahoga County

Emergency services Birthing friendly

Hillcrest Hospital

Acute Care Hospitals · Mayfield Heights, OH

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number360230

Location6780 Mayfield RoadMayfield Heights, OH 44124 · Cuyahoga County

Birthing friendly

Meadville Medical Center

Acute Care Hospitals · Meadville, PA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390113

Location751 Liberty StreetMeadville, PA 16335 · Crawford County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 44195 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

$126.12 typical visit price

range $54.34 – $166.65

Typical copayment $31.53 (range $13.58 – $41.66)

Most-billed visit code 99204

Established Patient

$96.44 typical visit price

range $17.10 – $135.40

Typical copayment $24.11 (range $4.27 – $33.85)

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.

MS. MARY COLLEEN RATH R.D., L.D., CNSC

Dietitian, Registered

9500 EUCLID AVE, M17
CLEVELAND, OH 44195

Cuyahoga County (216) 444-6986

DR. CHRISTOPHER F TENGGARDJAJA M.D.

Urology (Urogynecology and Reconstructive Pelvic Surgery)

9500 EUCLID AVE, Q10-1
CLEVELAND, OH 44195

Cuyahoga County (216) 444-5600

DR. MASATO FUJIKI M.D., PH.D.

Surgery

9500 EUCLID AVE
CLEVELAND, OH 44195

Cuyahoga County (216) 444-8007

KRISTIN R JOHNSON CNP

Nurse Practitioner

9500 EUCLID AVE
CLEVELAND, OH 44195

Cuyahoga County (800) 223-2273

MONICA LYNN SHEIN CRNA

Nurse Anesthetist, Certified Registered

9500 EUCLID AVE
CLEVELAND, OH 44195

Cuyahoga County (800) 223-2273

MRS. TONYA RENEE GOINGS ACNP-BC

Nurse Practitioner (Acute Care)

9500 EUCLID AVE, SUITE RC25
CLEVELAND, OH 44195

Cuyahoga County (216) 444-2200

MS. DANA ANNE RUBIS CNP

Nurse Practitioner (Critical Care Medicine)

9500 EUCLID AVE, G58
CLEVELAND, OH 44195

Cuyahoga County (216) 444-5086

DR. RACHAEL C SULLIVAN M.D.

Surgery

9500 EUCLID AVE
CLEVELAND, OH 44195

Cuyahoga County (440) 449-1101

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 Callahan's NPI number?

The NPI number for Thomas Callahan is 1023004520. It was assigned to this individual provider in the NPPES registry on September 21, 2005.

Where is Thomas Callahan located?

Thomas Callahan practices at 9500 Euclid Ave, Cleveland, OH 44195. The listed phone number is (800) 223-2273.

What is Thomas Callahan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Clinical Cardiac Electrophysiology, with taxonomy code 207RC0001X.

Is Thomas Callahan enrolled in Medicare?

Yes. Thomas Callahan 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 Callahan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Callahan reassigns Medicare benefits to 2 organizations: The Cleveland Clinic Foundation (Cleveland, OH) and Wooster Clinic, LLC (Wooster, OH). 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 Callahan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Thomas Callahan accept?

Health plans from Anthem Blue Cross and Blue Shield, Antidote Health Plan of Ohio, Inc. and Oscar Insurance Corporation of Ohio list Thomas Callahan 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 Callahan affiliated with any hospitals?

According to CMS data, Thomas Callahan is affiliated with Euclid Hospital, South Pointe Hospital, Cleveland Clinic, Hillcrest Hospital and Meadville Medical Center.

When was this NPI record last updated?

The NPPES record for Thomas Callahan was last updated on December 10, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.