Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Jeffrey R Underkoffler, OD
Optometrist in Worcester, MA · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1518942929
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Registry record
Entity type Individual (Type 1)
Name Jeffrey R Underkoffler
Credential OD
Sex Male
Practice address 5 Neponset St, Worcester, MA, 01606
Phone (508) 856-9599
Fax (508) 854-4997
Enumeration date Dec 8, 2005
Last updated in NPPES Sep 26, 2018
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 7926634 | Other | - | AETNA US HEALTHCARE |
| B21211501 | Other | - | CIGNA HEALTH PLAN |
| 0323837 | Other | - | WELFARE |
| 61202 | Other | - | FALLON COMMUNITY HEALTH |
| 0323837 | Medicaid | MA | - |
| W15817 | Other | - | BLUE SHIELD HMO BLUE |
| 042472266 | Other | - | PRIVATE HEALTHCARE SYSTEM |
| 5901866 | Other | - | CIGNA HEALTH PLAN |
| AA3020 | Other | - | HARVARD PILGRIM HEALTHCAR |
| 786730 | Other | - | MVP HEALTH CARE |
| 35371 | Other | - | CHILDRENS MEDICAL SECURIT |
| W15817 | Other | - | BLUE SHIELD INDEMNITY |
| 042472266 | Other | - | THREE RIVERS |
| 2213190 | Other | - | FIRST HEALTH |
| 35371 | Other | - | HEALTHY START |
| W15817 | Other | - | BLUE CARE ELECT |
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 Jeffrey Underkoffler?
Jeffrey Underkoffler is registered in NPPES with the primary taxonomy of Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-09-26.