Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Holly E Happe, DO
Specialist in Boston, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1780623116
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Registry record
Entity type Individual (Type 1)
Name Dr. Holly E Happe
Credential DO
Sex Female
Practice address 243 Charles St, Room 713, Boston, MA, 02114
Phone (617) 573-3380
Enumeration date Jun 4, 2006
Last updated in NPPES Jan 4, 2011
Taxonomy & licenses
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD.
About the DO credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 408577900 | Medicaid | MD | - |
| P00616344 | Other | DC | RAILROAD MEDICARE |
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 Holly Happe?
Holly Happe is registered in NPPES with the primary taxonomy of Specialist. 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.
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-01-04.