Ewa Ruel, M.D.
Endocrinology, Diabetes & Metabolism Physician · Princeton, NJ
Ewa Ruel, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Princeton, New Jersey, and NPI 1023242799, issued on May 11, 2009. Check the license (New Jersey 25MA09882300, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Ewa Ruel
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- 25MA09882300 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 601 Ewing St Ste C8, Princeton, NJ 08540
- Phone
- (609) 924-4433
- Enumerated
- May 11, 2009
- Record last updated
- Feb 5, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (609) 924-4423
- Medicare enrollment
- Enrolled (PECOS I20161105000073); accepts Medicare assignment
- Medical or professional school
- Virginia Commonwealth University, School Of Medicine, 2009
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 417 in New Jersey → Look up another NPI →
Verify Ewa Ruel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license 25MA09882300Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
20% more Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
3,163 Medicare Part D claims for 339 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 46% of claims.
Most prescribed
- Levothyroxine Sodium301 claims
- Metformin Hcl231 claims
- Ozempic220 claims
- Lantus Solostar172 claims
- Nano 2nd Gen Pen Needle153 claims
- Metformin Hcl Er141 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 95.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $28.40
2 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 5,661 providers of this specialty with any payment received $5,742.15 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Capital Health Medical GroupPennington, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ewa Ruel among 417 endocrinology, diabetes & metabolism physician records in New Jersey
Ewa Ruel, M.D. is one of 417 endocrinology, diabetes & metabolism physician records with a practice address in New Jersey. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 58% of them.
- NPI issued2009 · 58% of these records are older, 37% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated2009 · median 2006 among the 313 with a school on file
- Record last updated2020 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in New Jersey
There are 417 endocrinology, diabetes & metabolism physician records in New Jersey.
All 417 in New Jersey → Every provider in Princeton → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Shirley Bembo, M.D.Princeton, NJ 085401023041472
- Paul Deutsch, M.D.Princeton, NJ 085401225262355
- Sherin Elsa Mathews, M.D.Princeton, NJ 085401346656568
- Diane Fresca, M.D.Princeton, NJ 085401104084649
- Henry Goldstein, MDPrinceton, NJ 085401700946225
- Angela Inzerillo, MDPrinceton, NJ 085401346300852
- Ansu Joy, MDPrinceton, NJ 085401629278536
- Alan Moses, M.D.Princeton, NJ 085401922033067
Common questions
What is Ewa Ruel, M.D.'s NPI number?
Ewa Ruel, M.D.'s National Provider Identifier (NPI) is 1023242799, issued on May 11, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Ewa Ruel, M.D. located?
The NPPES record lists a practice address at 601 Ewing St Ste C8, Princeton, NJ, 08540. Phone: (609) 924-4433. Providers update this record themselves, so call before visiting.
How can I verify Ewa Ruel, M.D.'s license?
NPPES lists New Jersey license number 25MA09882300, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ewa Ruel, M.D. prescribe under Medicare Part D?
In 2024, Ewa Ruel, M.D. had 3,163 Medicare Part D claims for 339 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
What is Ewa Ruel, M.D.'s MIPS final score?
The 2023 MIPS final score is 95.8 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.