Doctor profile · Federal record
Dr. Richard Mermelstein, MD
Internal Medicine Physician (CMS: Internal Medicine) · W Hempstead, NY
- NPI 1629488440
- Accepts Medicare
- MIPS 52.8 / 100 · 2023
- 12 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
225 Nassau Blvd # B
W Hempstead, NY 115522247
(516) 656-1919
fax (833) 968-3330 - Additional location
-
24 Joy Dr
Manhasset Hills, NY 110401109
(516) 233-8241 - Mailing address
-
1010 Northern Blvd Ste 328
Great Neck, NY 110215329
Credentials & registration
- NPI registered
- May 2014 — 12 yrs on file
- Profile last updated
- September 10, 2025
- Year of graduation
- 2014 — 12 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- New York #290500
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1629488440. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
864
Distinct HCPCS
5
Medicare allowed
$133,805
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99310 |
Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes | 393 | 151 | $171 | |
99309 |
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes | 294 | 99 | $121 | |
99306 |
Initial nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes | 112 | 109 | $205 | |
99316 |
Nursing facility discharge management, more than 30 minutes | 46 | 45 | $145 | |
99308 |
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes | 19 | 16 | $85 |
In context: peer comparison
Among 1 peers in W Hempstead Internal Medicine Physician, average services per provider: 172. This provider delivers 5.0× the peer median.Open Payments
Industry payments received
All-time total
$2,015
Transactions
74
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Scilex Pharmaceuticals INC. | 19 | $408.71 | |
| AstraZeneca Pharmaceuticals Lp | 12 | $244.30 | |
| Ani Pharmaceuticals, INC. | 4 | $185.23 | |
| Nevro Corp. | 3 | $180.28 | |
| Amgen INC. | 7 | $166.85 | |
| Renalytix Ai, INC. | 7 | $139.50 | |
| Lilly USA, LLC | 5 | $107.65 | |
| Alexion Pharmaceuticals, INC. | 3 | $87.69 | |
| Janssen Biotech, INC. | 3 | $67.73 | |
| Novo Nordisk INC | 3 | $59.29 | |
| Mallinckrodt Hospital Products INC. | 2 | $57.69 | |
| Pfizer INC. | 2 | $53.43 | |
| Astellas Pharma US INC | 2 | $43.04 | |
| Ucb, INC. | 1 | $29.41 | |
| Otsuka America Pharmaceutical, INC. | 1 | $27.65 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
2,481
Patients
658
Total drug cost
$91,945
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 291 | 85 | $2,696 |
| Amlodipine Besylate | Generic | 245 | 54 | $1,615 |
| Furosemide | Generic | 240 | 69 | $1,228 |
| Levothyroxine Sodium | Generic | 239 | 38 | $2,124 |
| Eliquis (Apixaban) | Brand | 204 | 46 | $63,351 |
| Potassium Chloride | Generic | 179 | 33 | $5,265 |
| Gabapentin | Generic | 148 | 40 | $1,419 |
| Mirtazapine | Generic | 136 | 31 | $2,406 |
| Losartan Potassium | Generic | 126 | 30 | $1,411 |
| Hydralazine Hcl | Generic | 121 | 30 | $2,034 |
Frequently asked questions
What is Dr. Richard Mermelstein's medical specialty?
Dr. Richard Mermelstein practices Internal Medicine Physician in W Hempstead, NY.
Where does Dr. Richard Mermelstein practice?
Dr. Richard Mermelstein practices at 225 Nassau Blvd # B, W Hempstead, NY 115522247. Office phone: 5166561919.
What is Dr. Richard Mermelstein's NPI?
Dr. Richard Mermelstein's National Provider Identifier (NPI) is 1629488440, issued by NPPES.
Does Dr. Richard Mermelstein accept Medicare assignment?
Yes. Dr. Richard Mermelstein accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Richard Mermelstein commonly perform?
Top Medicare-reported procedures in 2023: Subsequent nursing facility care with high level of medical decision making (HCPCS 99310); Subsequent nursing facility care with moderate level of medical decision making (HCPCS 99309); Initial nursing facility care with high level of medical decision making (HCPCS 99306). Source: CMS Medicare Physician & Other Practitioners file.