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RICHARD MERMELSTEIN MD
NPI 1629488440
Internal Medicine in W Hempstead, NY

Active since May 01, 2014PECOS EnrolledAccepts Medicare Assignment
62.8/100
CMS Quality Rating
225 NASSAU BLVD # B, W HEMPSTEAD, NY 11552(516) 656-1919(833) 968-3330 Get Directions Write a Review

NPPES record last updated: September 10, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Richard Mermelstein Md NPPES

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

RICHARD MERMELSTEIN MD (NPI 1629488440) is an individual internal medicine provider in W Hempstead, New York, licensed in New York (290500) and active in the NPI registry since May 2014. He is enrolled in Medicare PECOS, maintains a secondary practice location in Manhasset Hills, and is a graduate of Other (2014).

NPPES Registry Identity

NPI1629488440
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameRICHARD MERMELSTEINCredential: MD
Location Address225 NASSAU BLVD # BW Hempstead, NY 11552-2247
Mailing Address1010 Northern Blvd Ste 328Great Neck, NY 11021-5329 · (516) 233-2484 · Fax (516) 304-5850
Phone(516) 656-1919
Fax(833) 968-3330
Sole ProprietorNo
Medical School CMSOtherGraduated 2014
Enumeration DateMay 1, 2014
Last NPPES UpdateSeptember 10, 2025
NPPES CertifiedSeptember 10, 2025
✔ NPI 1629488440 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 · 290500
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.
225 NASSAU BLVD # B, W Hempstead, NY 11552
Open in Google Maps ↗

Secondary Practice Location 1

Location 124 Joy DrManhasset Hills, NY 11040-1109 · Phone (516) 233-8241

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

Richard 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 ID5092019372
PECOS Enrollment IDI20180403000375
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 8

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.
104 services76 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.
89 services77 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.
78 services46 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.
75 services62 patients
Automated urinalysis test 81003
An automated urinalysis test is a routine examination that checks your urine for various substances. It can help identify potential health issues such as kidney problems or diabetes. The test uses a machine to analyze a small urine sample, providing quick and accurate results.
34 services27 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.
29 services29 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11552 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.

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.

62.8/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality78.22
Promoting Interoperability0
Improvement Activities40
Cost47.79

Other Providers at the Same Location NPPES 2

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

FRANKLIN PRIMARY CARE LLC
Clinic/Center (Primary Care)
225 NASSAU BLVD # B
WEST HEMPSTEAD, NY 11552
Nassau County (516) 650-1067
DR. ANN MARIE RODE DO
Internal Medicine
225 NASSAU BLVD # B
WEST HEMPSTEAD, NY 11552
Nassau County (516) 656-1919

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 Richard Mermelstein's NPI number?

The NPI number for Richard Mermelstein is 1629488440. It was assigned to this individual provider in the NPPES registry on May 1, 2014.

Where is Richard Mermelstein located?

Richard Mermelstein practices at 225 Nassau Blvd # B, W Hempstead, NY 11552. The listed phone number is (516) 656-1919.

What is Richard Mermelstein's specialty?

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

Is Richard Mermelstein enrolled in Medicare?

Yes. Richard 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.

When was this NPI record last updated?

The NPPES record for Richard Mermelstein was last updated on September 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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.