DR. LEWEN STEMPLER M.D.
NPI 1518303247
Nuclear Medicine in New York, NY

Q: What is Lewen Stempler's NPI number?

The NPI number for Lewen Stempler is 1518303247. It was assigned to this individual provider in the NPPES registry on May 21, 2013. The provider is also known as Dr. Lewen Cai M.D..

Q: What is Lewen Stempler's specialty?

The primary specialty registered for this NPI is Nuclear Medicine with taxonomy code 207U00000X.

Q: When was this NPI record last updated?

The NPPES record for Lewen Stempler was last updated on October 23, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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 May 21, 2013PECOS EnrolledAccepts Medicare Assignment

1 GUSTAVE L LEVY PL, BOX 1141, MOUNT SINAI MEDICAL CENTER, NEW YORK, NY 10029(212) 241-6500(212) 241-2851 Get Directions Write a Review

NPPES record last updated: October 23, 2019. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Dr. Lewen Stempler M.d. NPPES

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

DR. LEWEN STEMPLER M.D. (NPI 1518303247) is an individual nuclear medicine provider in New York, New York, licensed in New York (299842) and active in the NPI registry since May 2013. She is enrolled in Medicare PECOS, is affiliated with Mount Sinai Hospital, and is a graduate of Other (1993).

NPPES Registry Identity

NPI1518303247

Entity TypeIndividualFemale

Primary Taxonomy207U00000X

Provider Legal NameDR. LEWEN STEMPLERCredential: M.D.

Location Address1 GUSTAVE L LEVY PL, BOX 1141, MOUNT SINAI MEDICAL CENTERNew York, NY 10029-6574

Mailing Address1 Gustave L Levy Pl, Box 1141, Mount Sinai Medical CenterNew York, NY 10029-6574 · (212) 241-6500 · Fax (212) 241-2851

Phone(212) 241-6500

Fax(212) 241-2851

Sole ProprietorNo

Medical School CMSOtherGraduated 1993

Enumeration DateMay 21, 2013

Last NPPES UpdateOctober 23, 2019

✔ NPI 1518303247 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNuclear MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207U00000X

License✔ Licensed in NY · 299842

Definition

A nuclear medicine specialist employs the properties of radioactive atoms and molecules in the diagnosis and treatment of disease and in research. Radiation detection and imaging instrument systems are used to detect disease as it changes the function and metabolism of normal cells, tissues and organs. A wide variety of diseases can be found in this way, usually before the structure of the organ involved by the disease can be seen to be abnormal by any other techniques. Early detection of coronary artery disease (including acute heart attack), early cancer detection and evaluation of the effect of tumor treatment, diagnosis of infection and inflammation anywhere in the body and early detection of blood clot in the lungs are all possible with these techniques. Unique forms of radioactive molecules can attack and kill cancer cells (e.g., lymphoma, thyroid cancer) or can relieve the severe pain of cancer that has spread to bone

1 GUSTAVE L LEVY PL, New York, NY 10029

Open in Google Maps ↗

Other Names 1

Former Name (1)Dr. Lewen Cai M.d.

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. Lewen Stempler 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 ID6507198819

PECOS Enrollment IDI20191105002267

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 Lewen Stempler reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Fpa Hospital Based

Same address

Nuclear Medicine

1 GUSTAVE L LEVY PL
New York, NY 10029

Reassigned Medicare billing, New York enrollment
1,067 clinicians in this Medicare group

NPI 1629319413 (212) 241-7775

The New York Proton Center

1.4 mi

Oncology, Radiation

225 E 126TH ST
New York, NY 10035

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

NPI 1609363670 (646) 968-9064

Icahn School Of Medicine At Mount Sinai

13 mi

Internal Medicine

283 BARD AVE
Staten Island, NY 10310

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

NPI 1861900888 (718) 816-8068

North Shore Medical Group Of The Mount Sinai School Of Medicine

25 mi

Internal Medicine

2020 WANTAGH AVE
Wantagh, NY 11793

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

NPI 1992417323 (516) 961-4545

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.

Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml Q9967

Low osmolar contrast material with 300-399 mg/ml iodine concentration is a diagnostic tool used in imaging procedures. It helps to enhance the visibility of specific areas in the body, aiding in accurate diagnosis. It's safe and generally well-tolerated by patients.

1,477 services17 patients

Gallium ga-68, dotatate, diagnostic, 0.1 millicurie A9587

Gallium Ga-68 Dotatate is a diagnostic tool used in PET scans to help detect certain types of tumors. It involves injecting a small amount of radioactive material into the body. This helps doctors see how tissues and organs are functioning.

972 services18 patients

Piflufolastat f-18, diagnostic, 1 millicurie A9595

Piflufolastat F-18 is a radioactive diagnostic agent used in PET scans. It helps visualize certain cells in your body, aiding doctors in diagnosing specific conditions. This service involves injecting 1 millicurie of the agent into your body.

586 services63 patients

Nuclear medicine study from skull base to mid-thigh with ct scan 78815

A nuclear medicine study from skull base to mid-thigh with a CT scan involves using a small amount of radioactive material and CT imaging to examine body tissues and organs. This helps detect any abnormalities by providing detailed images of the body's internal structure.

399 services368 patients

Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries A9552

Fluorodeoxyglucose F-18 FDG is a radioactive drug used in PET scans. It helps doctors see how your tissues and organs are functioning. The drug is given in a specific dose, up to 45 millicuries, depending on your body size and the type of scan.

345 services321 patients

Nuclear medicine study whole body with ct scan 78816

A Nuclear Medicine Study with a CT Scan is a diagnostic procedure. It uses a small amount of radioactive substance and a CT scan to create detailed images of your body. These images help doctors diagnose, monitor, and treat various conditions.

165 services161 patients

Nuclear medicine study from skull base to mid-thigh with ct scan 78815

57 services57 patients

Nuclear medicine study, spect imaging with concurrent ct scan, 1 area or single acquisition, single day imaging 78830

A nuclear medicine study with SPECT and concurrent CT scan is a special imaging test. It uses a small amount of radioactive substance and advanced imaging techniques to create detailed pictures of your internal body structures. It aids in diagnosing and tracking the progress of treatment for various diseases.

33 services29 patients

Nuclear medicine study, spect imaging with concurrent ct scan, 1 area or single acquisition, single day imaging 78830

23 services22 patients

Radioactive drug therapy through a vein 79101

Radioactive drug therapy through a vein involves injecting a drug with radioactive properties into your bloodstream. This drug travels throughout your body, targeting and destroying harmful cells, such as cancer cells, while sparing healthy ones. It's a non-invasive procedure to treat certain diseases.

19 services16 patients

Ct scan of chest with contrast 71260

A CT scan of the chest with contrast is an imaging procedure. A special dye (contrast) is used to highlight specific areas in your body, providing clearer pictures of your chest. This helps in diagnosing conditions related to your lungs, heart, and other chest structures.

17 services17 patients

Technetium tc-99m medronate, diagnostic, per study dose, up to 30 millicuries A9503

Technetium Tc-99m Medronate is a diagnostic procedure that uses a small amount of radioactive material to examine the health of your bones. It helps to detect bone diseases or abnormalities. The procedure is safe, with the radioactive substance naturally leaving your body after the test.

16 services14 patients

Technetium tc-99m sulfur colloid, diagnostic, per study dose, up to 20 millicuries A9541

Technetium Tc-99m sulfur colloid is used in diagnostic imaging tests. It helps to highlight areas of concern in the body by emitting a small amount of radiation that can be detected by a special camera. This helps doctors to diagnose and monitor various health conditions.

16 services16 patients

Nuclear medicine study of lymphatic system 78195

A nuclear medicine study of the lymphatic system involves injecting a safe, radioactive substance into your body. This substance travels through your lymphatic system and helps create images on a special camera. These images can help doctors diagnose conditions related to your immune system.

15 services15 patients

Nuclear medicine study of bone and/or joint whole body 78306

A nuclear medicine study of bone and/or joint whole body involves injecting a small amount of radioactive material into your body. This material travels to your bones and emits energy. A special camera captures this energy, creating images of your bones to help identify any abnormalities.

14 services14 patients

Nuclear medicine study of bone and/or joint whole body 78306

13 services12 patients

Ct scan of abdomen and pelvis with contrast 74177

A CT scan of the abdomen and pelvis with contrast is an imaging procedure. A special dye, called contrast, is used to make certain areas more visible. This can help identify issues such as infections, tumors, or other abnormalities. The procedure is painless and usually takes about 30 minutes.

12 services12 patients

Nuclear medicine studies of blood flow in heart muscle at rest and with stress with concurrent ct scan 78431

This is a diagnostic test where a tiny amount of radioactive material is used to examine your heart's blood flow at rest & during stress, alongside a CT scan for detailed images. It helps identify any heart-related issues like blockages or damage.

12 services12 patients

Nuclear medicine study of heart muscle blood flow by pet 78434

A nuclear medicine study of heart muscle blood flow by PET is a non-invasive test that uses a small amount of radioactive substance to create detailed images of your heart's blood flow and function. It helps assess heart health and diagnose heart conditions.

12 services12 patients

Nuclear medicine study of lung ventilation and circulation 78582

A nuclear medicine lung ventilation and circulation study uses a safe radioactive material to create images of air and blood flow in your lungs. It helps identify issues like blood clots or lung diseases. You inhale or receive an injection of this material, and a special camera captures the images.

12 services12 patients

Nuclear medicine study whole body with ct scan 78816

12 services12 patients

Iodine 1-123 ioflupane, diagnostic, per study dose, up to 5 millicuries A9584

Iodine 1-123 Ioflupane is a diagnostic procedure where a small radioactive substance is introduced into your body. It helps to create clear images of your brain, specifically to study the functioning of your brain's nerve cells.

12 services12 patients

Hospital Affiliations CMS Care Compare 3

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

Mount Sinai Hospital

Acute Care Hospitals · New York, NY

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330024

LocationOne Gustave L Levy PlaceNew York, NY 10029 · New York County

Emergency services Birthing friendly

Mount Sinai St Luke's Roosevelt Hospital

Acute Care Hospitals · New York, NY

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330046

Location1000 Tenth AvenueNew York, NY 10019 · New York County

Emergency services Birthing friendly

Mount Sinai Beth Israel

Acute Care Hospitals · New York, NY

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330169

LocationFirst Avenue At 16th StreetNew York, NY 10003 · New York County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10029 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

$150.24 typical visit price

range $65.69 – $198.19

Typical copayment $37.56 (range $16.42 – $49.54)

Most-billed visit code 99204

Established Patient

$114.88 typical visit price

range $21.20 – $160.66

Typical copayment $28.72 (range $5.30 – $40.16)

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.

MRS. LAURA MANNING R.D., C.D.N.

Dietitian, Registered

1 GUSTAVE L LEVY PL, BOX 1625
NEW YORK, NY 10029

New York County (212) 241-9426

AMY JAYANT SANGHVI MD

Emergency Medicine

1 GUSTAVE L LEVY PL, BOX 1149
NEW YORK, NY 10029

New York County (212) 241-0748

MOUNT SINAI MEDICAL CENTER

General Acute Care Hospital

1 GUSTAVE L LEVY PL
NEW YORK, NY 10029

New York County (800) 637-4624

ANURADHA LALA-TRINDADE

Internal Medicine (Cardiovascular Disease)

1 GUSTAVE L LEVY PL
NEW YORK, NY 10029

New York County (212) 987-3100

RENA DYMERSKY RPA-C, MS

Physician Assistant

1 GUSTAVE L LEVY PL
NEW YORK, NY 10029

New York County (212) 241-6500

JENNY H CHUNG PHARMD, RN, FNP-BC

Nurse Practitioner (Family)

1 GUSTAVE L LEVY PL, TRANSPLANT INST. DEPARTMENT BOX 1104
NEW YORK, NY 10029

New York County (212) 659-8006

ERIKA JACOBSON RD,CDN

Dietitian, Registered

1 GUSTAVE L LEVY PL
NEW YORK, NY 10029

New York County (917) 241-5633

SARAH ALICIA REDA

Student in an Organized Health Care Education/Training Program

1 GUSTAVE L LEVY PL
NEW YORK, NY 10029

New York County (212) 241-6500

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 Lewen Stempler's NPI number?

The NPI number for Lewen Stempler is 1518303247. It was assigned to this individual provider in the NPPES registry on May 21, 2013. The provider is also known as Dr. Lewen Cai M.D..

Where is Lewen Stempler located?

Lewen Stempler practices at 1 Gustave L Levy Pl Box 1141, Mount Sinai Medical Center, New York, NY 10029. The listed phone number is (212) 241-6500.

What is Lewen Stempler's specialty?

The primary specialty registered for this NPI is Nuclear Medicine with taxonomy code 207U00000X.

Is Lewen Stempler enrolled in Medicare?

Yes. Lewen Stempler 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 Lewen Stempler's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Lewen Stempler reassigns Medicare benefits to 4 organizations: Fpa Hospital Based (New York, NY), The New York Proton Center (New York, NY), Icahn School Of Medicine At Mount Sinai (Staten Island, NY) and North Shore Medical Group Of The Mount Sinai School Of Medicine (Wantagh, NY). 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 Lewen Stempler's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Lewen Stempler affiliated with any hospitals?

According to CMS data, Lewen Stempler is affiliated with Mount Sinai Hospital, Mount Sinai St Luke's Roosevelt Hospital and Mount Sinai Beth Israel.

When was this NPI record last updated?

The NPPES record for Lewen Stempler was last updated on October 23, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.