Quick answers
- Where does Karin L. Underkoffler see patients?
- Medicare's clinician data lists 2 practice locations, including Worcesteer, MA and Westborough, MA. Call before your visit to confirm the address.
- What is Karin L. Underkoffler's specialty?
- Medicare lists Optometry as the primary specialty.
- Does Karin L. Underkoffler accept Medicare assignment?
- Yes. Medicare's clinician data says Karin L. Underkoffler accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Karin L. Underkoffler?
- (508) 595-2300, as listed in official Medicare / NPI Registry data.
- What is Karin L. Underkoffler's NPI number?
- 1699757666. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Karin L. Underkoffler is enrolled with Medicare (CMS data updated 2026-10-02).
- 5 Neponset StWorcesteer, MA 01606 (508) 595‑2300
- 900 Union StWestborough, MA 01581 (508) 366‑8836
Group practices
Medicare enrollment lists Karin L. Underkoffler as a member of this group (CMS data updated 2026-10-02).
- Reliant Medical Group Inc640 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Worcesteer
Clinicians with the same Medicare primary specialty in Worcesteer, MA — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Medical school | Pennsylvania College Of Optometry |
| Graduation year | 1987 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1699757666 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians