Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Karin L Underkoffler, OD
Optometrist in Westborough, MA · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1699757666
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Registry record
Entity type Individual (Type 1)
Name Karin L Underkoffler
Credential OD
Sex Female
Practice address 900 Union St, Westborough, MA, 01581
Phone (508) 871-1799
Fax (508) 871-0779
Enumeration date Nov 16, 2005
Last updated in NPPES Jun 23, 2020
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 |
|---|---|---|---|
| 042472266 | Other | - | THREE RIVERS |
| 35481174 | Other | - | CIGNA HEALTHSOURCE |
| 60676 | Other | - | CHILDRENS MEDICAL SECURIT |
| 0334979 | Other | - | MEDICAID WELFARE |
| 110014770A | Medicaid | MA | - |
| W16361 | Other | - | BLUE SHIELD INDEMNITY |
| 042472266 | Other | - | TRICARE CHAMPUS |
| 042472266 | Other | - | PRIVATE HEALTHCARE SYSTEM |
| 786731 | Other | - | MVP HEALTH CARE |
| B21204901 | Other | - | CIGNA HEALTH PLAN |
| 61203 | Other | - | FALLON COMMUNITY HEALTH P |
| 7023611 | Other | - | AETNA US HEALTHCARE |
| W16361 | Other | - | BLUE CARE ELECT |
| 2213192 | Other | - | FIRST HEALTH |
| AA3021 | Other | - | HARVARD PILGRIM HEALTHCAR |
| W17198 | Other | - | MEDICARE B |
| 410045265 | Other | - | RAILROAD MEDICARE |
| W16361 | Other | - | BLUE SHIELD HMO BLUE |
| 6356724001 | Other | - | CIGNA PAL ID |
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 is the NPI number for Karin Underkoffler?
The National Provider Identifier (NPI) for Karin Underkoffler is 1699757666, a Type 1 (individual) record in the CMS NPPES registry.
Where does Karin Underkoffler practice?
The practice location on file with NPPES is in Westborough, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Veronica Rusu Family Medicine Physician · Westborough, MA NPI 1770568206 Andal Sadagopan Internal Medicine Physician · Westborough, MA NPI 1932187846 Susan Kellogg Physician Assistant · Westborough, MA NPI 1154301091 Michael Daley Pediatrics Physician · Westborough, MA NPI 1861469751 Ninad Samant Internal Medicine Physician · Westborough, MA NPI 1114994019 Joan Mcdonagh Pediatrics Physician · Westborough, MA NPI 1609843598 John Trudel Family Medicine Physician · Westborough, MA NPI 1265493738 Kerrie Mcfeeters Pediatric Nurse Practitioner · Westborough, MA NPI 1053373688
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-06-23.