Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Phoebe Hildreth Yager, MD
Pediatrics Physician in Boston, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1104927623
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Registry record
Entity type Individual (Type 1)
Name Dr. Phoebe Hildreth Yager
Credential MD
Sex Female
Practice address 175 Cambridge Street, Cpzs-5, Boston, MA, 02114
Phone (617) 724-4380
Fax (617) 724-4391
Enumeration date Sep 26, 2006
Last updated in NPPES Nov 24, 2008
Taxonomy & licenses
2080P0203X Pediatric Critical Care Medicine Physician Allopathic & Osteopathic Physicians · License 216176 (MA) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 2012316 | Medicaid | MA | - |
| J26342 | Other | MA | BCBS MA |
| 216176 | Other | MA | TUFTS HEALTH PLAN |
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
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.
What specialty is Phoebe Yager?
Phoebe Yager is registered in NPPES with the primary taxonomy of Pediatrics Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-11-24.