Doctor profile · Federal record

Dr. Ronen Marmur, MD

Rheumatology Physician (CMS: Rheumatology) · Internal Medicine Physician · Brewster, NY

  • NPI 1609821818
  • Accepts Medicare
  • 31 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
185 Route 312
Brewster, NY 105092337
(845) 278-7000
fax (845) 278-2208
Mailing address
110 S Bedford RD, Caremount Medical PC
Mount Kisco, NY 105493446

Credentials & registration

NPPES · NUCC
NPI registered
May 2006 — 20 yrs on file
Profile last updated
October 13, 2017
Year of graduation
1995 — 31 yrs since
Specialty taxonomy
207RR0500X — NUCC code
State license (1)
New York #215729
Medicaid
NY #02191624

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1609821818. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
7,143
Distinct HCPCS
10
Medicare allowed
$249,408
HCPCS Description Services Patients Avg allowed
Q5119 Injection, rituximab-pvvr, biosimilar, (ruxience), 10 mg 2,640 16 $27
99214 Established patient office or other outpatient visit, 30-39 minutes 578 364 $137
86140 Measurement c-reactive protein for detection of infection or inflammation 384 262 $5
85652 Red blood cell sedimentation rate, to detect inflammation, automated 382 258 $3
36415 Insertion of needle into vein for collection of blood sample 380 266 $8
80053 Blood test, comprehensive group of blood chemicals 367 256 $10
82550 Creatine kinase (cardiac enzyme) level, total 363 245 $6
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count 349 244 $8
96413 Administration of chemotherapy into vein, 1 hour or less 171 52 $152
99212 Established patient office or other outpatient visit, 10-19 minutes 155 50 $64

In context: peer comparison

Among 1 peers in Brewster Rheumatology Physician, average services per provider: 183. This provider delivers 39× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$95
Transactions
5
Manufacturers
4
Payer (manufacturer) Industry Txns Amount
Sobi, INC 2 $39.48
Novartis Pharmaceuticals Corporation 1 $19.00
Amgen INC. 1 $18.90
GlaxoSmithKline, LLC. 1 $17.73

By nature of payment

Food and Beverage
$95

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
2,645
Patients
795
Total drug cost
$899,147
Drug Type Claims Patients Total cost
Hydroxychloroquine Sulfate Generic 554 144 $40,556
Methotrexate (Methotrexate Sodium) Brand 310 86 $13,446
Prednisone Generic 249 111 $2,796
Tramadol Hcl Generic 214 36 $2,066
Allopurinol Generic 210 58 $3,520
Gabapentin Generic 186 51 $6,560
Methylprednisolone Generic 162 76 $3,924
Diclofenac Sodium Generic 138 63 $3,548
Duloxetine Hcl Generic 127 41 $4,550
Leflunomide Generic 107 27 $11,716

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Ronen Marmur's medical specialty?
Dr. Ronen Marmur practices Rheumatology Physician in Brewster, NY.
Where does Dr. Ronen Marmur practice?
Dr. Ronen Marmur practices at 185 Route 312, Brewster, NY 105092337. Office phone: 8452787000.
What is Dr. Ronen Marmur's NPI?
Dr. Ronen Marmur's National Provider Identifier (NPI) is 1609821818, issued by NPPES.
Does Dr. Ronen Marmur accept Medicare assignment?
Yes. Dr. Ronen Marmur accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ronen Marmur commonly perform?
Top Medicare-reported procedures in 2023: Injection, rituximab-pvvr, biosimilar, (ruxience), 10 mg (HCPCS Q5119); Established patient office or other outpatient visit (HCPCS 99214); Measurement c-reactive protein for detection of infection or inflammation (HCPCS 86140). Source: CMS Medicare Physician & Other Practitioners file.