Doctor profile · Federal record

Dr. Ewa Ruel, M.D.

Endocrinology, Diabetes & Metabolism Physician (CMS: Endocrinology) · Princeton, NJ

  • NPI 1023242799
  • Accepts Medicare
  • MIPS 88.4 / 100 · 2023
  • 17 yrs in practice
  • Female
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
601 Ewing St Ste C8
Princeton, NJ 085402756
(609) 924-4433
fax (609) 924-4423
Mailing address
2 Capital Way, Suite 290
Pennington, NJ 085342521

Credentials & registration

NPPES · NUCC
NPI registered
May 2009 — 17 yrs on file
Profile last updated
February 5, 2020
Year of graduation
2009 — 17 yrs since
Specialty taxonomy
207RE0101X — NUCC code
State license (1)
New Jersey #25MA09882300

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1023242799. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
627
Distinct HCPCS
9
Medicare allowed
$55,167
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 211 135 $134
82962 Blood glucose (sugar) test performed by hand-held instrument 174 88 $3
95251 Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report 52 29 $37
99215 Established patient office or other outpatient visit, 40-54 minutes 46 37 $189
99213 Established patient office or other outpatient visit, 20-29 minutes 45 37 $96
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional 34 24 $26
99204 New patient office or other outpatient visit, 45-59 minutes 26 26 $179
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 20 14 $120
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 19 19 $181

In context: peer comparison

Among 8 peers in Princeton Endocrinology, Diabetes & Metabolism Physician, average services per provider: 223. This provider delivers 2.8× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$28
Transactions
2
Manufacturers
2
Payer (manufacturer) Industry Txns Amount
Medtronic, INC. 1 $14.40
Abbott Laboratories 1 $14.00

By nature of payment

Food and Beverage
$28

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
1,726
Patients
529
Total drug cost
$892,687
Drug Type Claims Patients Total cost
Levothyroxine Sodium Generic 269 74 $5,126
Lantus Solostar (Insulin Glargine,Hum.Rec.Anlog) Brand 195 56 $138,359
Metformin Hcl Generic 182 57 $2,728
Metformin Hcl ER (Metformin Hcl) Brand 135 39 $3,133
Ozempic (Semaglutide) Brand 134 38 $254,355
Nano 2Nd Gen Pen Needle (Pen Needle, Diabetic) Brand 128 57 $14,509
Januvia (Sitagliptin Phosphate) Brand 94 27 $123,989
Atorvastatin Calcium Generic 87 28 $1,861
Rosuvastatin Calcium Generic 87 26 $3,365
Humalog Kwikpen U-100 (Insulin Lispro) Brand 76 32 $74,896

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Ewa Ruel's medical specialty?
Dr. Ewa Ruel practices Endocrinology, Diabetes & Metabolism Physician in Princeton, NJ.
Where does Dr. Ewa Ruel practice?
Dr. Ewa Ruel practices at 601 Ewing St Ste C8, Princeton, NJ 085402756. Office phone: 6099244433.
What is Dr. Ewa Ruel's NPI?
Dr. Ewa Ruel's National Provider Identifier (NPI) is 1023242799, issued by NPPES.
Does Dr. Ewa Ruel accept Medicare assignment?
Yes. Dr. Ewa Ruel accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ewa Ruel commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Blood glucose (sugar) test performed by hand-held instrument (HCPCS 82962); Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report (HCPCS 95251). Source: CMS Medicare Physician & Other Practitioners file.