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 › 1041S0200X

Russell Janzen

NPI 1255135927 · on the registry since 2025

Practice

Address
1236 Main St
Holyoke, MA 01040
Phone
(413) 561-0060
Organisation at this address
Servicenet, Inc
Andrew B Chertoff Mdpc
Inferred from a shared address, not stated in the registry.
Clinicians at this address
17

Registry record

Primary taxonomy
1041S0200X
1041S0200X
Sex
Male
Record last updated
2025-04-02

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