MARY K LEUNG MD
NPI 1023278306
Internal Medicine in Rockville Centre, NY

Q: What is Mary Leung's NPI number?

The NPI number for Mary Leung is 1023278306. It was assigned to this individual provider in the NPPES registry on June 11, 2008.

Q: What is Mary Leung's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Mary Leung was last updated on March 9, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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 June 11, 2008PECOS EnrolledAccepts Medicare Assignment

242 MERRICK RD STE 301, ROCKVILLE CENTRE, NY 11570(516) 536-1455(516) 536-1598 Get Directions Write a Review

NPPES record last updated: March 9, 2017. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Mary K Leung Md NPPES

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

MARY K LEUNG MD (NPI 1023278306) is an individual internal medicine provider in Rockville Centre, New York, licensed in New York (245464) and active in the NPI registry since June 2008. She is enrolled in Medicare PECOS, is affiliated with Mount Sinai Hospital, and is a graduate of State University Of New York At Buffalo School Of Medicine (2004).

NPPES Registry Identity

NPI1023278306

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameMARY K LEUNGCredential: MD

Location Address242 MERRICK RD STE 301Rockville Centre, NY 11570-5254

Mailing Address242 Merrick Rd Ste 301Rockville Centre, NY 11570-5254 · (516) 536-1455 · Fax (516) 536-1598

Phone(516) 536-1455

Fax(516) 536-1598

Sole ProprietorNo

Medical School CMSState University Of New York At Buffalo School Of MedicineGraduated 2004

Enumeration DateJune 11, 2008

Last NPPES UpdateMarch 9, 2017

✔ NPI 1023278306 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in NY · 245464

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

242 MERRICK RD STE 301, Rockville Centre, NY 11570

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Other Identifiers 2

Medicaid1023278306NY

Medicare UPINA400118487NY

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mary K Leung 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 ID143346122

PECOS Enrollment IDI20100928000149

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.

Areas of Expertise CMS Part B claims 15

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.

Injection, darbepoetin alfa, 1 microgram (non-esrd use) J0881

Darbepoetin alfa injection is a medication used to treat anemia (low red blood cell count) often caused by chronic kidney disease or chemotherapy. It works by stimulating your body to produce more red blood cells, helping to increase your energy and well-being.

42,802 services40 patients

Injection, denosumab, 1 mg J0897

Denosumab is a medication given via injection to strengthen your bones. It works by slowing down the cells that break down bone, improving bone density and reducing the risk of fractures. It's often used for osteoporosis treatment.

6,180 services23 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

1,536 services442 patients

Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count 85025

A Complete Blood Cell Count is a common test that measures various components of the blood, including red cells (carry oxygen), white cells (fight infection), and platelets (help blood clot). An automated test ensures accuracy. The differential count provides detailed information about white cell types.

1,494 services460 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.

1,286 services354 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

362 services98 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.

176 services81 patients

Blood test, clotting time 85610

A clotting time blood test helps determine how quickly your blood forms clots, a process crucial to stop bleeding. During the test, a small blood sample is taken from your arm. The sample is then analyzed in a lab to see how long it takes for a clot to form.

119 services28 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.

81 services39 patients

Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg J3420

This is a procedure where a small dose of Vitamin B-12, also known as Cyanocobalamin, is injected into your body. This vitamin is essential for nerve function and the production of red blood cells. It's often used to treat vitamin B-12 deficiency.

60 services18 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

51 services51 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.

40 services29 patients

Drawing of blood for a medical problem 99195

Drawing blood is a simple procedure where a needle is inserted into a vein, usually in your arm, to collect a small sample. This sample helps in diagnosing any medical issues you may have. You might feel a small prick, but overall, it's a quick and safe process.

39 services15 patients

Irrigation of implanted venous access drug delivery device 96523

Irrigation of an implanted venous access drug delivery device is a procedure to clean or unblock the device. This device is implanted under your skin to allow easy, frequent, and long-term access to your veins for medication delivery. The process involves flushing the device with a sterile solution to ensure it works properly.

32 services16 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

Hospital Affiliations CMS Care Compare 2

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 South Nassau

Acute Care Hospitals · Oceanside, NY

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330198

LocationOne Healthy WayOceanside, NY 11572 · Nassau County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11570 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

$154.28 typical visit price

range $67.40 – $203.53

Typical copayment $38.57 (range $16.85 – $50.88)

Most-billed visit code 99204

Established Patient

$117.62 typical visit price

range $21.66 – $164.45

Typical copayment $29.40 (range $5.41 – $41.11)

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 4

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

MOUNT SINAI SCHOOL OF MEDICINE

Internal Medicine (Hematology & Oncology)

242 MERRICK RD STE 301
ROCKVILLE CENTRE, NY 11570

Nassau County (516) 536-1455

DR. ABHINAV ROHATGI MD

Internal Medicine (Hematology & Oncology)

242 MERRICK RD STE 301
ROCKVILLE CENTRE, NY 11570

Nassau County (516) 536-1455

DR. KENNETH LEE ANGELINO M.D.

Internal Medicine (Hematology & Oncology)

242 MERRICK RD STE 301, SOUTH NASSAU ONCOLOGY PRACTICE, PC
ROCKVILLE CENTRE, NY 11570

Nassau County (516) 536-1455

MRS. KRISTIN MARIE SOBECK NP

Nurse Practitioner (Adult Health)

242 MERRICK RD STE 301
ROCKVILLE CENTRE, NY 11570

Nassau County (516) 536-1455

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 Mary Leung's NPI number?

The NPI number for Mary Leung is 1023278306. It was assigned to this individual provider in the NPPES registry on June 11, 2008.

Where is Mary Leung located?

Mary Leung practices at 242 Merrick Rd Ste 301, Rockville Centre, NY 11570. The listed phone number is (516) 536-1455.

What is Mary Leung's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Mary Leung enrolled in Medicare?

Yes. Mary Leung 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.

Is Mary Leung affiliated with any hospitals?

According to CMS data, Mary Leung is affiliated with Mount Sinai Hospital and Mount Sinai South Nassau.

When was this NPI record last updated?

The NPPES record for Mary Leung was last updated on March 9, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.