Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Diane M Downing, CNM
Midwife in Hanover, MA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1740331974
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Registry record
Entity type Individual (Type 1)
Name Diane M Downing
Credential CNM
Sex Female
Practice address 2100 Washington St, Hanover, MA, 02339
Phone (781) 871-2822
Fax (781) 871-3996
Enumeration date Jan 15, 2007
Last updated in NPPES Feb 14, 2013
Taxonomy & licenses
CNM · Certified Nurse Midwife: An advanced practice nurse specializing in pregnancy, childbirth, and reproductive care.
About the CNM credential
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What specialty is Diane Downing?
Diane Downing is registered in NPPES with the primary taxonomy of Midwife. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-02-14.