James Umlas, MD
NPI 1942268883 · Ophthalmology Physician · Lexington, MA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Umlas, MD is a Ophthalmology Physician provider in Lexington, MA (NPI 1942268883).
Provider details
- NPI number
- 1942268883
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 78623 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,481 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Complete Exam of Visual System92014 | 1,112 | $140 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 351 | $99 |
| Exam of Visual Field With Extended Testing92083 | 233 | $71 |
| Imaging of Optic Nerve92133 | 230 | $40 |
| Established Patient Problem Focused Exam of Visual System92012 | 184 | $99 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 97 | $581 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 35 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 1,322 | 401 |
| Timolol Maleate | 505 | 158 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 275 | 90 |
| Brimonidine Tartrate | 253 | 81 |
| Prednisolone Acetate | 188 | 138 |
| Moxifloxacin Hclbrand: Moxifloxacin | 162 | 115 |
| Dorzolamide Hcl | 101 | 34 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-02
- Last updated
- 2008-06-17
Frequently asked questions
- What is James Umlas's NPI number?
- James Umlas's National Provider Identifier (NPI) is 1942268883, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Umlas's specialty?
- James Umlas is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is James Umlas located?
- James Umlas's practice location on file with NPPES is 21 Worthen Rd, Lexington, MA 02421-4835.
- What is James Umlas's phone number?
- The practice phone number listed in the NPPES registry for James Umlas is (781) 862-1620.
- Does James Umlas accept Medicare?
- James Umlas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Umlas's NPI active?
- Yes — James Umlas's NPI (1942268883) is active in the NPPES registry as of the last update on 2008-06-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.