John S. Troiani, MD, PHD
Pediatrics Physician · Silver Spring, MD
John S. Troiani, MD, PHD is a pediatrics physician with a practice address in Silver Spring, Maryland, and NPI 1629663646, issued on Mar 2, 2021. Check the license (Maryland D84432, as entered in NPPES) on the Maryland Board of Physicians; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- John S. Troiani
- Credential
- MD, PHD
- Primary taxonomy
- Pediatrics Physician 208000000X
- License numbers
- D84432 MD
38077 MN
Self-reported in NPPES; status is on the state search - Practice location
- 10903 New Hampshire Ave, Silver Spring, MD 20993
- Phone
- (301) 796-4258
- Enumerated
- Mar 2, 2021
- Record last updated
- Mar 2, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 1,842 in Maryland → Look up another NPI →
Also registered at 10903 New Hampshire Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John S. Troiani in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D84432Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
John S. Troiani among 1,842 pediatrics physician records in Maryland
John S. Troiani, MD, PHD is one of 1,842 pediatrics physician records with a practice address in Maryland. 35% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2021, is newer than 93% of them.
- NPI issued2021 · 93% of these records are older, 3% newer
- In a Medicare fileNo · 35% of these records are
- In the CMS Doctors and Clinicians fileNo · 9% of these records are
- Record last updated2021 · 61% 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 Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
93 pediatrics physician records list a practice address in Silver Spring
They are 93 of the 6,531 NPPES records with a practice address in Silver Spring, and 1,842 pediatrics physician records in Maryland. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 1,842 in Maryland → Every provider in Silver Spring → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Margaret Brewinski Isaacs, M.D., MPHSilver Spring, MD 209931801812201
- Ellen Fields, M.D.Silver Spring, MD 209931437518446
- Irena Lavine, MDSilver Spring, MD 209931629205513
- William Lubas, M.D.-PH.D.Silver Spring, MD 209931710123773
- William Rodriguez, MDSilver Spring, MD 209931770824377
- Amarilys Vega, MDSilver Spring, MD 209931245901347
- Barry Marx, MDAberdeen, MD 210051760489819
- Barbara Siskind, M.D.Aberdeen Proving Ground, MD 210051306820907
Common questions
What is John S. Troiani, MD, PHD's NPI number?
John S. Troiani, MD, PHD's National Provider Identifier (NPI) is 1629663646, issued on Mar 2, 2021. An NPI identifies a provider in billing; it is not a license.
Where is John S. Troiani, MD, PHD located?
The NPPES record lists a practice address at 10903 New Hampshire Ave, Silver Spring, MD, 20993. Phone: (301) 796-4258. Providers update this record themselves, so call before visiting.
How can I verify John S. Troiani, MD, PHD's license?
NPPES lists Maryland license number D84432, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.