Ian Marshall, MD
Pediatric Endocrinology Physician · New Brunswick, NJ
Ian Marshall, MD is a pediatric endocrinology physician with a practice address in New Brunswick, New Jersey, and NPI 1396760450, issued on Jul 12, 2006. Check the license (New Jersey 25MA07638500, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Ian Marshall
- Credential
- MD
- Primary taxonomy
- Pediatric Endocrinology Physician 2080P0205X
- License numbers
- 25MA07638500 NJ
MA76385 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 89 French Street, New Brunswick, NJ 08901
- Phone
- (732) 235-6230
- Enumerated
- Jul 12, 2006
- Record last updated
- Jul 23, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 0075272 NJ
- Medicare enrollment
- Enrolled (PECOS I20040722000362); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest pediatric endocrinology physician records → All 68 in New Jersey → Look up another NPI →
Also registered at 89 French Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Abdolreza Esfahanizadeh, MDNeurology with Special Qualifications in Child Neurology Physician1659507275
- Soula Koniaris, MDPediatric Gastroenterology Physician1942380779
- Lakshmi Moorthy, MDPediatric Rheumatology Physician1326122565
- Allan Tschernia, MDPediatric Gastroenterology Physician1831274729
Verify Ian Marshall 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 25MA07638500Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average pediatric endocrinology physician in 2024
12 Medicare Part D claims, against an average of 105 among the 386 providers of this specialty who prescribed in Part D.
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.
Industry payments in 2024: $12,191.99
19 payments; by number, the most common kind was food and beverage; the largest payer was Neurocrine Biosciences, Inc. The 931 providers of this specialty with any payment received $4,382.94 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
- Rutgers Health-Rwj Scleroderma ProgramNew Brunswick, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ian Marshall among 68 pediatric endocrinology physician records in New Jersey
Ian Marshall, MD is one of 68 pediatric endocrinology physician records with a practice address in New Jersey. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 0% of them.
- NPI issued2006 · 0% of these records are older, 65% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 18% of these records are
- Graduated1991 · median 2011 among the 12 with a school on file
- Record last updated2021 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0205X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Endocrinology Physician providers in New Jersey
There are 68 pediatric endocrinology physician records in New Jersey.
All 68 in New Jersey → Every provider in New Brunswick → Pediatric Endocrinology Physician nationwide →
The 8 pediatric endocrinology physician records with the nearest ZIP codes
- Mariam Gangat, MDNew Brunswick, NJ 089011396060315
- Min Jung Kang, M.D.New Brunswick, NJ 089011942610423
- Ahmed Khattab, MDNew Brunswick, NJ 089011265736268
- Divya Khurana, MDNew Brunswick, NJ 089011295039253
- Elizabeth Korn, M.D.New Brunswick, NJ 089011588869952
- Shana Mencher, M.D.New Brunswick, NJ 089011053706887
- Max Salas, M.D.New Brunswick, NJ 089011528088812
- Swathi Sethuram, MDNew Brunswick, NJ 089011033514369
Common questions
What is Ian Marshall, MD's NPI number?
Ian Marshall, MD's National Provider Identifier (NPI) is 1396760450, issued on Jul 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ian Marshall, MD located?
The NPPES record lists a practice address at 89 French Street, New Brunswick, NJ, 08901. Phone: (732) 235-6230. Providers update this record themselves, so call before visiting.
How can I verify Ian Marshall, MD's license?
NPPES lists New Jersey license number 25MA07638500, 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 Ian Marshall, MD prescribe under Medicare Part D?
In 2024, Ian Marshall, MD had 12 Medicare Part D claims; the average among pediatric endocrinology physician prescribers was 105. 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.