DR. JEFFREY WORK M.D.
NPI 1023095320
Internal Medicine - Cardiovascular Disease in Tarzana, CA

Q: What is Jeffrey Work's NPI number?

The NPI number for Jeffrey Work is 1023095320. It was assigned to this individual provider in the NPPES registry on December 28, 2005.

Q: What is Jeffrey Work's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Q: When was this NPI record last updated?

The NPPES record for Jeffrey Work was last updated on November 29, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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 December 28, 2005PECOS EnrolledAccepts Medicare Assignment

18370 BURBANK BLVD, SUITE 707, TARZANA, CA 91356(818) 345-5580(818) 774-0458 Get Directions Write a Review

NPPES record last updated: November 29, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 29, 2021, Apr 20, 2021, Mar 29, 2016 (3 updates tracked since 2016).

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About Dr. Jeffrey Work M.d. NPPES

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

DR. JEFFREY WORK M.D. (NPI 1023095320) is an individual cardiovascular disease provider in Tarzana, California, licensed in California (G47314) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS and is a graduate of Yale University School Of Medicine (1979).

NPPES Registry Identity

NPI1023095320

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameDR. JEFFREY WORKCredential: M.D.

Location Address18370 BURBANK BLVD, SUITE 707Tarzana, CA 91356-2804

Mailing Address18370 Burbank Blvd, Suite 707Tarzana, CA 91356-2804 · (818) 345-5580 · Fax (818) 774-0458

Phone(818) 345-5580

Fax(818) 774-0458

Sole ProprietorNo

Medical School CMSYale University School Of MedicineGraduated 1979

Enumeration DateDecember 28, 2005

Last NPPES UpdateNovember 29, 20213 updates tracked since enumeration

NPPES CertifiedNovember 29, 2021

✔ NPI 1023095320 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

License✔ Licensed in CA · G47314

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

18370 BURBANK BLVD, Tarzana, CA 91356

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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 and accepts Medicare assignment

Dr. Jeffrey Work 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 ID1951405521

PECOS Enrollment IDI20101108000173

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 Reassignment

Medicare enrollment records show Jeffrey Work reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Providence Facey Medical Foundation

17 mi

Internal Medicine

26357 MCBEAN PKWY
Valencia, CA 91355

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

NPI 1710031588 (661) 222-2600

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 22

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.

1,220 services556 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.

635 services493 patients

Injection, regadenoson, 0.1 mg J2785

Regadenoson injection, 0.1 mg, is a medication used to help visualize the heart during a stress test. It works by increasing blood flow in the arteries of the heart. It's injected into a vein and is generally well-tolerated.

356 services89 patients

Technetium tc-99m sestamibi, diagnostic, per study dose A9500

Technetium Tc-99m Sestamibi is a diagnostic test used to create images of your heart or breast tissues. It involves a safe radioactive substance injection that helps doctors to detect any abnormalities or changes in these tissues.

305 services154 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.

197 services185 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect 78452

Nuclear medicine studies of the heart involve two parts: rest and stress. During rest, images are taken of your heart at ease. During stress, images are taken after exercise or medication-induced stress. SPECT is a special imaging technique providing 3D pictures of your heart, helping identify any issues.

153 services153 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician 93015

An exercise or drug-induced heart stress test with ECG is a procedure performed by a doctor to assess how your heart responds to exertion. It involves monitoring your heart's electrical activity while you exercise or after medication is given to mimic exercise effects.

147 services147 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.

130 services114 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.

123 services46 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.

80 services78 patients

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

69 services68 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.

68 services65 patients

Heart rhythm recording of continous external ekg over 8-15 days 93246

A heart rhythm recording is a non-invasive procedure where a small device, attached externally, monitors your heart's electrical activity for 8-15 days. It helps detect irregular heart rhythms, assess heart rate, and guide treatment decisions. It's safe, painless, and can be done during normal daily activities.

67 services64 patients

Ultrasound of heart with continuous electrocardiogram (ecg) during rest, exercise and/or drug induced stress with review and report 93351

This procedure involves using ultrasound technology to create images of your heart while you rest, exercise, or undergo drug-induced stress. An ECG continuously monitors your heart's electrical activity. It helps doctors assess heart health and function.

49 services49 patients

Nuclear medicine study, spect imaging, 1 area or single acquisition, single day imaging 78803

A nuclear medicine study with SPECT involves a safe, small amount of radioactive substance to help visualize body organs. SPECT, or Single Photon Emission Computed Tomography, creates detailed 3D images. This helps doctors diagnose and monitor conditions in a specific body area.

46 services46 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.

45 services45 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.

34 services34 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.

27 services26 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.

25 services25 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.

14 services14 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician 93016

An exercise or drug-induced heart stress test with ECG involves monitoring your heart's activity while it's under stress, either from exercise or medication. A doctor supervises the entire procedure to ensure safety and accuracy in results. This test helps detect heart problems.

11 services11 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician 93018

An exercise or drug-induced heart stress test with ECG is a procedure to assess how your heart functions under stress. It can involve exercising or medication to make your heart work harder while an ECG records its activity. A physician reviews the results.

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91356 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

$77.96 typical visit price

range $20.84 – $153.61

Typical copayment $19.49 (range $5.21 – $38.40)

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.

NICHOLAS MICHAEL PANAGIOTIS, MD INC

Specialist

18370 BURBANK BLVD, 507
TARZANA, CA 91356

Los Angeles County (818) 774-9200

DR. JEFFREY PHILIP SALBERG M.D.

Internal Medicine

18370 BURBANK BLVD, STE 601
TARZANA, CA 91356

Los Angeles County (818) 996-5700

LINDA LEA PERL ADATTO M.D.

Pediatrics

18370 BURBANK BLVD, SUITE 307
TARZANA, CA 91356

Los Angeles County (818) 996-6000

TARZANA PEDIATRIC MEDICAL GROUP INC

Pediatrics

18370 BURBANK BLVD, SUITE #204
TARZANA, CA 91356

Los Angeles County (818) 345-7792

ALAN FOZAILOFF M.D.

Internal Medicine (Nephrology)

18370 BURBANK BLVD, SUITE 211
TARZANA, CA 91356

Los Angeles County (818) 334-5750

DR. RICHARD C WONG M.D.

Internal Medicine (Cardiovascular Disease)

18370 BURBANK BLVD, SUITE 707
TARZANA, CA 91356

Los Angeles County (818) 345-5580

COMPREHENSIVE INFECTIOUS DISEASE CONSULTANTS A MEDICAL CORPORATION

Internal Medicine (Infectious Disease)

18370 BURBANK BLVD, STE 414
TARZANA, CA 91356

Los Angeles County (818) 506-3384

MUDJIANTO CHANDRA, M.D., INC.

Colon & Rectal Surgery

18370 BURBANK BLVD, SUITE 607
TARZANA, CA 91356

Los Angeles County (818) 708-1004

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 Jeffrey Work's NPI number?

The NPI number for Jeffrey Work is 1023095320. It was assigned to this individual provider in the NPPES registry on December 28, 2005.

Where is Jeffrey Work located?

Jeffrey Work practices at 18370 Burbank Blvd Suite 707, Tarzana, CA 91356. The listed phone number is (818) 345-5580.

What is Jeffrey Work's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Jeffrey Work enrolled in Medicare?

Yes. Jeffrey Work 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 organization bills Medicare for Jeffrey Work's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jeffrey Work reassigns Medicare benefits to Providence Facey Medical Foundation (Valencia, CA). The 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 Jeffrey Work'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 Jeffrey Work was last updated on November 29, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.