Quick answers
- Where does James W. Umlas see patients?
- Medicare's clinician data lists 4 practice locations, including Arlington, MA, Lexington, MA and Concord, MA. Call before your visit to confirm the address.
- What is James W. Umlas's specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does James W. Umlas accept Medicare assignment?
- Medicare's clinician data says James W. Umlas may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for James W. Umlas?
- (781) 648-1620, as listed in official Medicare / NPI Registry data.
- What is James W. Umlas's NPI number?
- 1942268883. 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 James W. Umlas is enrolled with Medicare (CMS data updated 2026-10-02).
- 1040 Massachusetts AveArlington, MA 02476 (781) 648‑1620
- 21 Worthen RdLexington, MA 02421 (781) 862‑1620
- 300 Baker Ave, Suite 210Concord, MA 01742 (978) 369‑1310
- 534 Boston Post RdSudbury, MA 01776 (781) 876‑2020
Group practices
Medicare enrollment lists James W. Umlas as a member of these groups (CMS data updated 2026-10-02).
- Lexington Eye Associates - Bid34 clinicians in the group
- Lexington Eye Associates, Inc34 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Arlington
Clinicians with the same Medicare primary specialty in Arlington, MA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Harvard Medical School |
| Graduation year | 1992 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1942268883 |
| 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