MICHAEL J ZELEFSKY MD
NPI 1093785065
Radiology - Radiation Oncology in New York, NY

Q: What is Michael Zelefsky's NPI number?

The NPI number for Michael Zelefsky is 1093785065. It was assigned to this individual provider in the NPPES registry on January 24, 2006.

Q: What is Michael Zelefsky's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Q: When was this NPI record last updated?

The NPPES record for Michael Zelefsky was last updated on April 7, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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 January 24, 2006PECOS EnrolledAccepts Medicare Assignment

84.47/100

CMS Quality Rating

1275 YORK AVE, NEW YORK, NY 10021(212) 639-2000 Get Directions Write a Review

NPPES record last updated: April 7, 2015. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Michael J Zelefsky Md NPPES

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

MICHAEL J ZELEFSKY MD (NPI 1093785065) is an individual radiation oncology provider in New York, New York, licensed in New York (171062) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, is affiliated with Nyu Langone Hospitals, and is a graduate of Albert Einstein College Of Medicine Of Yeshiva University (1986).

NPPES Registry Identity

NPI1093785065

Entity TypeIndividualMale

Primary Taxonomy2085R0001X

Provider Legal NameMICHAEL J ZELEFSKYCredential: MD

Location Address1275 YORK AVENew York, NY 10021-6007

Mailing Address633 3rd Ave, Box 3New York, NY 10017-6706

Phone(212) 639-2000

Sole ProprietorNo

Medical School CMSAlbert Einstein College Of Medicine Of Yeshiva UniversityGraduated 1986

Enumeration DateJanuary 24, 2006

Last NPPES UpdateApril 7, 2015

✔ NPI 1093785065 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Radiation OncologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0001X

License✔ Licensed in NY · 171062

Definition

A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.

1275 YORK AVE, New York, NY 10021

Open in Google Maps ↗

Other Identifiers 1

Medicare UPINE44878

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

Michael J Zelefsky 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 ID9638201254

PECOS Enrollment IDI20100719000004

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

Memorial Radiation Oncology Group

Same address

Radiation Oncology

1275 YORK AVE
New York, NY 10021

Reassigned Medicare billing, New York enrollment
132 clinicians in this Medicare group

NPI 1235109224 (646) 227-3813

New York University

1,041 mi

Cardiovascular Disease

3301 QUANTUM BLVD
Boynton Beach, FL 33426

Reassigned Medicare billing, New York enrollment
7,712 clinicians in this Medicare group

NPI 1285826438 (877) 648-2964

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 23

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.

Calculation of radiation therapy dose 77300

Radiation therapy dose calculation is a process to determine the exact amount of radiation needed to treat a specific area in the body. This calculation helps ensure the treatment is effective while minimizing harm to healthy tissues. It's a key part of planning your radiation therapy.

512 services63 patients

Ct guidance for insertion of radiation therapy fields 77014

CT guidance for insertion of radiation therapy fields involves using a CT scan to accurately map the area of your body where radiation will be applied. This ensures the radiation targets only the necessary area, minimizing impact to healthy tissues.

447 services16 patients

Calculation of radiation therapy dose 77300

134 services21 patients

Design and construction of complex radiation treatment device 77334

The design and construction of a complex radiation treatment device is a process where a specialized instrument is created. This device targets harmful cells with high-energy rays to destroy or damage them, while minimizing impact on healthy cells. This aids in treating conditions like cancer.

131 services81 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.

107 services102 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.

86 services86 patients

Radiation treatment management, 5 treatment sessions 77427

Radiation treatment management involves a series of 5 sessions where targeted radiation is used to destroy or shrink cancer cells in your body. Each session is carefully planned to maximize effectiveness while minimizing harm to healthy tissues. You may experience side effects which will be closely monitored and managed for your comfort.

85 services17 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

81 services81 patients

Complex radiation therapy planning 77263

Complex radiation therapy planning is a process to determine the most effective way to deliver radiation to a specific area in your body. It involves detailed imaging to map your body's structure, allowing for precise targeting of cancer cells while sparing healthy tissue.

76 services75 patients

Design and construction of radiation treatment device for high precision radiation therapy 77338

A radiation treatment device is custom-made for each patient to target cancer cells with high precision. It's designed to focus radiation on the tumor, sparing healthy tissue. This process ensures effective therapy while minimizing side effects.

76 services67 patients

Management of cranial lesion surgery using radiation over multiple sessions 77435

This procedure involves using targeted radiation to treat a lesion in the brain over several sessions. The radiation destroys the abnormal cells, helping to control or eliminate the lesion. It's a non-invasive treatment, meaning no surgical cuts are made.

65 services64 patients

High precision radiation therapy planning 77301

High precision radiation therapy planning involves detailed mapping of your body to target cancer cells accurately. Advanced imaging techniques help identify the exact location of the tumor, minimizing harm to healthy tissues. This personalized approach enhances effectiveness and reduces side effects.

60 services60 patients

Injection of biodegradable material next to prostate 55874

This procedure involves the introduction of a biodegradable substance near a gland located in the lower abdomen. This substance helps to create a barrier between the gland and nearby tissues, aiding in the precise delivery of treatment to the intended area.

39 services39 patients

Ultrasonic guidance for administration of radiation therapy 76965

Ultrasonic guidance for radiation therapy is a technique that uses ultrasound images to accurately target the area requiring treatment. It helps ensure radiation is directed precisely, reducing harm to healthy tissues.

36 services36 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.

34 services32 patients

Ultrasonic guidance for administration of radiation therapy 76965

32 services26 patients

Insertion of needle or tube into prostate for radiation therapy 55875

This procedure involves placing a fine needle or small tube into a gland located in the lower part of your body. It's done to deliver radiation therapy directly to the area, helping to treat conditions effectively. It's performed by a trained professional.

31 services27 patients

High dose radiation therapy, more than 12 channels 77772

High-dose radiation therapy with more than 12 channels is a treatment method that uses powerful radiation to target and destroy harmful cells in the body. This advanced technique allows for precise targeting, reducing harm to surrounding healthy tissue.

23 services21 patients

Design and construction of radiation treatment device for high precision radiation therapy 77338

22 services21 patients

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

22 services17 patients

High precision radiation therapy planning 77301

21 services21 patients

Complex radiation therapy planning for delivery of internal radiation 77318

Complex radiation therapy planning for internal radiation involves designing a unique plan to target harmful cells within your body. This process uses advanced imaging technology to map out the precise treatment area, ensuring that healthy tissue is spared.

17 services15 patients

3d radiation therapy planning 77295

3D radiation therapy planning is a procedure that uses computer imaging to map out the area needing treatment. This ensures the radiation targets the disease precisely, while minimizing exposure to surrounding healthy tissues. It's a key step in preparing for effective radiation therapy.

16 services14 patients

Hospital Affiliations CMS Care Compare

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

Nyu Langone Hospitals

Acute Care Hospitals · New York, NY

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330214

Location550 First AvenueNew York, NY 10016 · New York County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10021 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

$198.19 typical visit price

range $65.69 – $198.19

Typical copayment $49.54 (range $16.42 – $49.54)

Most-billed visit code 99205

Established Patient

$81.44 typical visit price

range $21.20 – $160.66

Typical copayment $20.36 (range $5.30 – $40.16)

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

84.47/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

93.33

Promoting Interoperability

100

Improvement Activities

Cost

54.91

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.

LIANG DENG MD

Dermatology

1275 YORK AVE
NEW YORK, NY 10021

New York County (646) 227-3813

EGBERT CLAYTON CRNA

Nurse Anesthetist, Certified Registered

1275 YORK AVE
NEW YORK, NY 10021

New York County (646) 227-3813

NORA ZMUIDINS CRNA

Nurse Anesthetist, Certified Registered

1275 YORK AVE
NEW YORK, NY 10021

New York County (646) 227-3813

IRA J DUNKEL MD

Pediatrics (Pediatric Hematology-Oncology)

1275 YORK AVE
NEW YORK, NY 10021

New York County (212) 639-2153

IDANIA FLETE-OLMEDA ANP

Nurse Practitioner (Adult Health)

1275 YORK AVE
NEW YORK, NY 10021

New York County (212) 639-6948

DR. YULIYA LAKHMAN MD

Radiology (Diagnostic Radiology)

1275 YORK AVE, DEPARTMENT OF RADIOLOGY
NEW YORK, NY 10021

New York County (212) 639-6611

GABRIELLA D'ANDREA MD

Internal Medicine (Medical Oncology)

1275 YORK AVE
NEW YORK, NY 10021

New York County (212) 639-2000

MARNI L SHEREN-MANOFF MD

Internal Medicine (Hematology & Oncology)

1275 YORK AVE
NEW YORK, NY 10021

New York County (646) 227-3813

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 Michael Zelefsky's NPI number?

The NPI number for Michael Zelefsky is 1093785065. It was assigned to this individual provider in the NPPES registry on January 24, 2006.

Where is Michael Zelefsky located?

Michael Zelefsky practices at 1275 York Ave, New York, NY 10021. The listed phone number is (212) 639-2000.

What is Michael Zelefsky's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Is Michael Zelefsky enrolled in Medicare?

Yes. Michael Zelefsky 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 Michael Zelefsky's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Zelefsky reassigns Medicare benefits to 2 organizations: Memorial Radiation Oncology Group (New York, NY) and New York University (Boynton Beach, FL). 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 Michael Zelefsky's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Michael Zelefsky affiliated with any hospitals?

According to CMS data, Michael Zelefsky is affiliated with Nyu Langone Hospitals.

When was this NPI record last updated?

The NPPES record for Michael Zelefsky was last updated on April 7, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.