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 › 208000000X

Alfonso Sierra, MD

NPI 1700978293 · on the registry since 2006 · sole proprietor

Practice

Address
505 Nashua Rd
Dracut, MA 01826
Phone
(978) 957-4300
Fax
(978) 957-3891
Organisation at this address
Kontos Inc.
Carlos A Del Rio Pc
Amerident Dental Pc
Nasim Ghaffar, M.D.
Vadim Schaldenko Mdpc
Inferred from a shared address, not stated in the registry.
Clinicians at this address
10

Registry record

Primary taxonomy
208000000X
208000000X
Licence states on file
MA
From the registry's licence fields, which are often incomplete.
Sex
Male
Record last updated
2007-07-08

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