DR. WILLIAM LEONARD DISCEPOLO II M.D.
NPI 1932308137
Internal Medicine - Clinical Cardiac Electrophysiology in Pasadena, CA

Q: What is William Discepolo's NPI number?

The NPI number for William Discepolo is 1932308137. It was assigned to this individual provider in the NPPES registry on July 17, 2007.

Q: What is William Discepolo'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 William Discepolo was last updated on April 30, 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 July 17, 2007PECOS EnrolledAccepts Medicare Assignment

3235 E COLORADO BLVD STE 201, PASADENA, CA 91107(310) 896-6474 Get Directions Write a Review

NPPES record last updated: April 30, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 30, 2021, Aug 25, 2020, Sep 13, 2018 (3 updates tracked since 2018).

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About Dr. William Leonard Discepolo Ii M.d. NPPES

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

DR. WILLIAM LEONARD DISCEPOLO II M.D. (NPI 1932308137) is an individual clinical cardiac electrophysiology provider in Pasadena, California, licensed in California (A85753) and active in the NPI registry since July 2007. He is enrolled in Medicare PECOS, maintains a secondary practice location in Pomona, and is a graduate of University Of California, Davis School Of Medicine (2002).

NPPES Registry Identity

NPI1932308137

Entity TypeIndividualMale

Primary Taxonomy207RC0001X

Provider Legal NameDR. WILLIAM LEONARD DISCEPOLO IICredential: M.D.

Location Address3235 E COLORADO BLVD STE 201Pasadena, CA 91107-3849

Mailing Address3235 E Colorado Blvd Ste 201Pasadena, CA 91107-3849 · (626) 577-7050

Phone(310) 896-6474

Sole ProprietorNo

Medical School CMSUniversity Of California, Davis School Of MedicineGraduated 2002

Enumeration DateJuly 17, 2007

Last NPPES UpdateApril 30, 20213 updates tracked since enumeration

NPPES CertifiedSeptember 22, 2020

✔ NPI 1932308137 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 CA · A85753

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 A85753 (CA)

Also ListedInternal Medicine · Cardiovascular DiseaseTaxonomy 207RC0000X · License A85753 (CA)

3235 E COLORADO BLVD STE 201, Pasadena, CA 91107

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Secondary Practice Location 1

Location 11866 N Orange Grove Ave Ste 201Pomona, CA 91767-3042 · Phone (909) 623-5866 · Fax (909) 623-1606

Other Identifiers 1

Medicaid7418139CA

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

Dr. William Leonard Discepolo Ii 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 ID4385687037

PECOS Enrollment IDI20050603000853

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 William Discepolo reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Socal Cardiovascular, Inc.

Same address

Cardiovascular Disease

3235 E COLORADO BLVD STE 201
Pasadena, CA 91107

Reassigned Medicare billing, California enrollment

NPI 1144834342 (310) 896-6474

Don W Lee, MD, A Medical Corporation

9.9 mi

Interventional Cardiology

710 S CENTRAL AVE, SUITE 200,210,250
Glendale, CA 91204

Reassigned Medicare billing, California enrollment
Medicare enrollment name: Don W Lee M D A Medical Corporation
4 clinicians in this Medicare group

NPI 1144265547 (323) 644-9504

California Hospitalists Emergency Physicians Medical Group Inc

16 mi

Emergency Medicine

13222 BLOOMFIELD AVE
Norwalk, CA 90650

Reassigned Medicare billing, California enrollment
55 clinicians in this Medicare group

NPI 1760648539 (747) 283-1809

Chaparral Medical Group, Inc.

19 mi

Otolaryngology

297 W ARTESIA ST, SUITE A
Pomona, CA 91768

Reassigned Medicare billing, California enrollment
Also billed through NPI 1750634325 (California)
114 clinicians in this Medicare group

NPI 1134508955 (909) 623-1503

California Cardiovascular Care Medical Group Inc

23 mi

Interventional Cardiology

3235 E COLORADO BLVD, SUITE 201
Pasadena, CA 91107

Reassigned Medicare billing, California enrollment
6 clinicians in this Medicare group

NPI 1912114075 (626) 577-7050

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 16

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.

5,189 services309 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.

353 services316 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.

327 services216 patients

Evaluation of implantable heart and blood vessel monitoring system, remote up to 30 days 93297

This service involves remotely monitoring your heart and blood vessel implant system for up to 30 days. Using advanced technology, healthcare professionals can track the device's performance and your health status, ensuring the system is working optimally for your needs.

242 services40 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

103 services94 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.

92 services68 patients

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.

84 services45 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.

66 services37 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

59 services56 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.

52 services32 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.

52 services52 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.

35 services28 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

29 services29 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.

20 services20 patients

Evaluation of implantable heart and blood vessel monitoring system 93290

An evaluation of an implantable heart and blood vessel monitoring system involves checking the device that's placed inside your body to monitor your heart and blood vessels' health. It helps doctors track your heart rate, rhythm, and blood flow, aiding in prompt, accurate treatment.

16 services11 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.

14 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91107 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

$142.39 typical visit price

range $62.96 – $187.60

Typical copayment $35.59 (range $15.74 – $46.90)

Most-billed visit code 99204

Established Patient

$109.96 typical visit price

range $20.84 – $153.61

Typical copayment $27.49 (range $5.21 – $38.40)

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 2

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

SOCAL CARDIOVASCULAR, INC.

Internal Medicine (Cardiovascular Disease)

3235 E COLORADO BLVD STE 201
PASADENA, CA 91107

Los Angeles County (310) 896-6474

MS. MEI YEE WONG FNP

Nurse Practitioner (Family)

3235 E COLORADO BLVD STE 201
PASADENA, CA 91107

Los Angeles County (626) 577-7050

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 William Discepolo's NPI number?

The NPI number for William Discepolo is 1932308137. It was assigned to this individual provider in the NPPES registry on July 17, 2007.

Where is William Discepolo located?

William Discepolo practices at 3235 E Colorado Blvd Ste 201, Pasadena, CA 91107. The listed phone number is (310) 896-6474.

What is William Discepolo's specialty?

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

Is William Discepolo enrolled in Medicare?

Yes. William Discepolo 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 William Discepolo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Discepolo reassigns Medicare benefits to 5 organizations: Socal Cardiovascular, Inc. (Pasadena, CA), Don W Lee, MD, A Medical Corporation (Glendale, CA), California Hospitalists Emergency Physicians Medical Group Inc (Norwalk, CA), Chaparral Medical Group, Inc. (Pomona, CA) and California Cardiovascular Care Medical Group Inc (Pasadena, CA). 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 William Discepolo'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 William Discepolo was last updated on April 30, 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.