Marilyn Ruiz, M.D.
Pediatrics Physician · Mendham, NJ
Marilyn Ruiz, M.D. is a pediatrics physician with a practice address in Mendham, New Jersey, and NPI 1740485457, issued on Jun 21, 2007. Check the license (New Jersey MA049891, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Marilyn Ruiz
- Credential
- M.D.
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- MA049891 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 3 Burnett Brook Dr, Mendham, NJ 07945
- Phone
- (973) 543-0667
- Enumerated
- Jun 21, 2007
- Record last updated
- Sep 11, 2025
- Fax
- (973) 543-0667
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 2,181 in New Jersey → Look up another NPI →
Verify Marilyn Ruiz 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 MA049891Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average pediatrics physician in 2024
46 Medicare Part D claims, against an average of 375 among the 5,609 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Clonidine Hcl12 claims
- Sertraline Hcl11 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.
Marilyn Ruiz among 2,181 pediatrics physician records in New Jersey
Marilyn Ruiz, M.D. is one of 2,181 pediatrics physician records with a practice address in New Jersey. 48% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 55% of them.
- NPI issued2007 · 55% of these records are older, 36% newer
- In a Medicare fileYes · 48% of these records are
- In the CMS Doctors and Clinicians fileNo · 7% of these records are
- Record last updated2025 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 pediatrics physician records list a practice address in Mendham
They are 4 of the 189 NPPES records with a practice address in Mendham, and 2,181 pediatrics physician records in New Jersey.
All 2,181 in New Jersey → Every provider in Mendham → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Daniel Dragalin, M.D.Mendham, NJ 079451124116363
- Deepa Minhas, M.D.Mendham, NJ 079451013979798
- Frank Osborn, MDMendham, NJ 079451871973834
- Leticia Gonzalez, M.D.Madison, NJ 079401851357792
- Christine Rehm, MDMadison, NJ 079401033186630
- Wen-Han Tsung, M.D.Morris Plains, NJ 079501457633158
- Nan Wu, M.D.Greystone Park, NJ 079501306901848
- Mojgan Behbakht, MDFlorham Park, NJ 079321104802438
Common questions
What is Marilyn Ruiz, M.D.'s NPI number?
Marilyn Ruiz, M.D.'s National Provider Identifier (NPI) is 1740485457, issued on Jun 21, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Marilyn Ruiz, M.D. located?
The NPPES record lists a practice address at 3 Burnett Brook Dr, Mendham, NJ, 07945. Phone: (973) 543-0667. Providers update this record themselves, so call before visiting.
How can I verify Marilyn Ruiz, M.D.'s license?
NPPES lists New Jersey license number MA049891, 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 Marilyn Ruiz, M.D. prescribe under Medicare Part D?
In 2024, Marilyn Ruiz, M.D. had 46 Medicare Part D claims; the average among pediatrics physician prescribers was 375. Part D covers Medicare prescriptions only.
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.