Richard Mermelstein, MD
NPI 1629488440 · Internal Medicine Physician · W Hempstead, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Richard Mermelstein, MD is a Internal Medicine Physician provider in W Hempstead, NY (NPI 1629488440).
Provider details
- NPI number
- 1629488440
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 290500 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
606 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 165 | $18 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 104 | $146 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 89 | $102 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 78 | $202 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 75 | $9 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Alprazolam | 25 | — |
| Azithromycin | 24 | 23 |
| Atorvastatin Calcium | 24 | 13 |
| Methylprednisolone | 21 | 20 |
| Amlodipine Besylate | 21 | — |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 19 | 17 |
| Rosuvastatin Calcium | 19 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,015 across 82 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 24 Joy DrManhasset Hills, NY 11040-1109Phone: (516) 233-8241
Registry dates
- Enumerated
- 2014-05-01
- Last updated
- 2025-09-10
- Certified
- 2025-09-10
Frequently asked questions
- What is Richard Mermelstein's NPI number?
- Richard Mermelstein's National Provider Identifier (NPI) is 1629488440, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Richard Mermelstein's specialty?
- Richard Mermelstein is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Richard Mermelstein located?
- Richard Mermelstein's practice location on file with NPPES is 225 Nassau Blvd # B, W Hempstead, NY 11552-2247.
- What is Richard Mermelstein's phone number?
- The practice phone number listed in the NPPES registry for Richard Mermelstein is (516) 656-1919.
- Does Richard Mermelstein accept Medicare?
- Richard Mermelstein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Richard Mermelstein's NPI active?
- Yes — Richard Mermelstein's NPI (1629488440) is active in the NPPES registry as of the last update on 2025-09-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.