npidata.org Sign in
Products
Provider RadarWatch an area and specialty — weekly alerts on new cliniciansPractice RadarWeekly alerts when new organisations register nearbySpecialtiesEvery NUCC taxonomy, with counts by state and cityStatesProvider counts and breakdowns for all 50 statesPhysician listsMDs and DOs with addresses and phone numbersNP listsNurse practitioners, the fastest-growing groupAPIJSON, delta feed, free tier
Use cases
Healthcare sales prospectingPhysician recruiting and locum staffingMedical device sales territory planningCredentialing and provider verificationHealthcare marketing lists and audience buildingPharmaceutical sales and prescriber targeting
Account
Start freeThree radars and an export a month Sign in Pricing
Explore
Data Labs API
About
About usTermsPrivacyContact us

Search › Massachusetts › 363LP0200X

Mark Costanzo, NP

NPI 1659850345 · on the registry since 2018

Practice

Address
300 Longwood Ave
Boston, MA 02115
Phone
(617) 355-6000
Organisation at this address
Bch Dental Group
Boston Childrens Hospital
Childrens Hospital Boston
Childrens Hospital Boston
Boston Childrens Hospital
Inferred from a shared address, not stated in the registry.
Clinicians at this address
4,018

Additional practice sites

  • 2401 Gillham Rd, Kansas City, MO

Registry record

Primary taxonomy
363LP0200X
363LP0200X
Also registered as
363LP0200X
363LP0200X
Licence states on file
MO, MA, KS
From the registry's licence fields, which are often incomplete.
Sex
Male
Record last updated
2026-04-29

Source: CMS National Plan and Provider Enumeration System. Registration is not the same as practising, and the registry records no retirement — some people listed here no longer practise. More in Massachusetts