DR. JOSEPH MERMELSTEIN MD
NPI 1689963662
Internal Medicine - Gastroenterology in Scarsdale, NY

Q: What is Joseph Mermelstein's NPI number?

The NPI number for Joseph Mermelstein is 1689963662. It was assigned to this individual provider in the NPPES registry on March 30, 2011.

Q: What is Joseph Mermelstein's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Active since March 30, 2011PECOS EnrolledAccepts Medicare Assignment

550 MAMARONECK AVENUE, SUITE 302, SCARSDALE, NY 10583(914) 723-8100 Get Directions Write a Review

NPPES record last updated: May 24, 2021. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Dr. Joseph Mermelstein Md NPPES

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

DR. JOSEPH MERMELSTEIN MD (NPI 1689963662) is an individual gastroenterology provider in Scarsdale, New York, licensed in New York (273034) and active in the NPI registry since March 2011. He is enrolled in Medicare PECOS, is affiliated with White Plains Hospital Center, and is a graduate of Icahn School Of Medicine At Mount Sinai (2011).

NPPES Registry Identity

NPI1689963662

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameDR. JOSEPH MERMELSTEINCredential: MD

Location Address550 MAMARONECK AVENUE, SUITE 302Scarsdale, NY 10583

Mailing Address550 Mamaroneck Avenue, Suite 302Scarsdale, NY 10583 · (914) 723-8100

Phone(914) 723-8100

Sole ProprietorNo

Medical School CMSIcahn School Of Medicine At Mount SinaiGraduated 2011

Enumeration DateMarch 30, 2011

Last NPPES UpdateMay 24, 2021

NPPES CertifiedMay 10, 2021

✔ NPI 1689963662 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in NY · 273034

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

Also ListedInternal MedicineTaxonomy 207R00000X · License 273034 (NY)

550 MAMARONECK AVENUE, Scarsdale, NY 10583

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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

Dr. Joseph Mermelstein 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 ID1658598883

PECOS Enrollment IDI20140813000050

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 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.

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.

211 services171 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.

122 services122 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

76 services75 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

59 services59 patients

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

50 services50 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.

42 services40 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

39 services38 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.

36 services33 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

32 services32 patients

Biopsy of large bowel using a flexible endoscope 45380

32 services32 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

23 services23 patients

Diagnostic exam of large bowel using a flexible endoscope 45378

This procedure, known as a colonoscopy, involves using a flexible tube with a light and camera to examine the large intestine. It helps detect any abnormalities such as polyps or inflammation. It's a standard procedure to ensure gut health.

18 services18 patients

Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk G0121

Colorectal cancer screening, such as a colonoscopy, is a preventive measure to detect early signs of cancer in the large intestine. For individuals not at high risk, it's typically recommended at age 50. A small, flexible tube with a camera is used to examine your colon. It's a safe, effective way to catch issues early.

16 services16 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.

13 services13 patients

Diagnostic exam of large bowel using a flexible endoscope 45378

11 services11 patients

Colorectal cancer screening; colonoscopy on individual at high risk G0105

Colorectal cancer screening, specifically a colonoscopy, is a preventive measure for those at high risk. A thin, flexible tube with a camera inspects the colon to spot any abnormal growths. This test helps detect potential issues early, enhancing the effectiveness of treatment.

11 services11 patients

Hospital Affiliations CMS Care Compare

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

White Plains Hospital Center

Acute Care Hospitals · White Plains, NY

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330304

Location41 East Post R0adWhite Plains, NY 10601 · Westchester County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10583 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.

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 Joseph Mermelstein's NPI number?

The NPI number for Joseph Mermelstein is 1689963662. It was assigned to this individual provider in the NPPES registry on March 30, 2011.

Where is Joseph Mermelstein located?

Joseph Mermelstein practices at 550 Mamaroneck Avenue Suite 302, Scarsdale, NY 10583. The listed phone number is (914) 723-8100.

What is Joseph Mermelstein's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Joseph Mermelstein enrolled in Medicare?

Yes. Joseph Mermelstein 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 Joseph Mermelstein affiliated with any hospitals?

According to CMS data, Joseph Mermelstein is affiliated with White Plains Hospital Center.

When was this NPI record last updated?

The NPPES record for Joseph Mermelstein was last updated on May 24, 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.