Dr. James W Umlas , MD
Ophthalmology • Lexington, MA
21 Worthen Rd
Lexington, MA 024214835
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
-
NPI assigned on May 2, 2006; this date does not establish years in practice.
-
Published CMS data list 2,481 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
-
Published Part B service records, 2024:
- 92014 — Established patient complete exam of visual system: 1,112 service units.
- 99213 — Established patient outpatient office visit: 351 service units.
- 92083 — Exam of visual field with extended testing: 233 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 11 records in the table · Guide: How to read Medicare Part B data
-
Published CMS data list 3,563 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
-
Published Part D records, 2024:
- Latanoprost — 1,322 prescription fills, including refills.
- Timolol Maleate — 505 prescription fills, including refills.
- Dorzolamide-Timolol (Dorzolamide Hcl/Timolol Maleat) — 275 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 35 records in the table · Guide: How to read Medicare Part D prescriber data
-
More Medicare Part B services than 80% of clinicians listed under Ophthalmology in Lexington, MA (2024, 11 clinicians with data). Median for this group: 1,702. Middle half: 1,532 to 2,373.
More Medicare Part B services than 60% of clinicians listed under Ophthalmology in Massachusetts (2024, 482 clinicians with data). Median for this group: 1,836. Middle half: 620 to 3,509.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
-
Medicare Part B services went from 2,124 in 2020 to 2,481 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
21 Worthen Rd
Lexington, MA 024214835
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 2 distinct group names: Lexington Eye Associates - Bid; Lexington Eye Associates, Inc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
Harvard Medical School
1992
What Public CMS Data Show
Ophthalmology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
1,346 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $324,134 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $222,526 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
30-day fills
8,149 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$362,821 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $123.83 in 2025
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2025.
Years since graduation
34 years (graduated 1992)
CMS Doctors and Clinicians data list 1992 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2006
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
May accept Medicare assignment
CMS data show this clinician may accept Medicare assignment. Clinicians who do not always accept assignment can decide case by case.
Ask the office before your visit. If a clinician does not accept assignment for a service, they can charge up to 15% more than the Medicare-approved amount, and you may be asked to pay the full amount at the visit.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Umlas has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Umlas as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Lexington and Massachusetts
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 80% of clinicians listed under Ophthalmology in Lexington, MA (2024, 11 clinicians with data). Median for this group: 1,702. Middle half: 1,532 to 2,373.
More Medicare Part B services than 60% of clinicians listed under Ophthalmology in Massachusetts (2024, 482 clinicians with data). Median for this group: 1,836. Middle half: 620 to 3,509.
Medicare-allowed amount
A higher Medicare-allowed amount than 80% of clinicians listed under Ophthalmology in Lexington, MA (2024, 11 clinicians with data). Median for this group: $191,201. Middle half: $133,519 to $298,770.
A higher Medicare-allowed amount than 65% of clinicians listed under Ophthalmology in Massachusetts (2024, 482 clinicians with data). Median for this group: $194,367. Middle half: $57,908 to $416,629.
Paid by Medicare
A higher Medicare payment amount than 80% of clinicians listed under Ophthalmology in Lexington, MA (2024, 11 clinicians with data). Median for this group: $131,839. Middle half: $96,492 to $202,557.
A higher Medicare payment amount than 65% of clinicians listed under Ophthalmology in Massachusetts (2024, 482 clinicians with data). Median for this group: $144,463. Middle half: $40,965 to $304,911.
Medicare Part D prescriptions
More Part D prescriptions than 85% of clinicians listed under Ophthalmology in Massachusetts (2024, 517 clinicians with data). Median for this group: 764. Middle half: 219 to 2,063.
Too few clinicians listed under Ophthalmology in Lexington have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 85% of clinicians listed under Ophthalmology in Massachusetts (2024, 517 clinicians with data). Median for this group: $61,248. Middle half: $7,840 to $214,090.
Too few clinicians listed under Ophthalmology in Lexington have Medicare Part D data for 2024 to compare.
18 active clinicians are listed under Ophthalmology with a practice address in Lexington, MA (792 in Massachusetts).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Lexington
16.7% of these 18 clinicians have the CMS telehealth indicator.
11.1% of these 18 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
-
Medicare Part B services
Medicare Part B services increased 17% from 2,124 in 2020 to 2,481 in 2024.
- 2020: 2,124
- 2021: 2,713
- 2022: 2,790
- 2023: 2,846
- 2024: 2,481
-
Medicare-allowed amount
Medicare-allowed amount increased 24% from $261,834 in 2020 to $324,134 in 2024.
- 2020: $261,834
- 2021: $371,685
- 2022: $380,617
- 2023: $384,590
- 2024: $324,134
-
Paid by Medicare
Paid by Medicare increased 23% from $180,244 in 2020 to $222,526 in 2024.
- 2020: $180,244
- 2021: $257,303
- 2022: $259,613
- 2023: $268,425
- 2024: $222,526
-
Medicare Part D prescriptions
Medicare Part D prescriptions increased 12% from 3,173 in 2020 to 3,563 in 2024.
- 2020: 3,173
- 2021: 3,300
- 2022: 3,299
- 2023: 3,397
- 2024: 3,563
-
30-day fills
30-day fills increased 19% from 6,875 in 2020 to 8,149 in 2024.
- 2020: 6,875
- 2021: 7,418
- 2022: 7,836
- 2023: 7,888
- 2024: 8,149
-
Part D drug cost
Part D drug cost decreased 19% from $450,096 in 2020 to $362,821 in 2024.
- 2020: $450,096
- 2021: $471,319
- 2022: $499,302
- 2023: $449,133
- 2024: $362,821
-
Industry payments (Open Payments)
Industry payments (Open Payments) went from $17.53 in 2020 to $123.83 in 2025.
- 2020: $17.53
- 2022: $22.31
- 2025: $123.83
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $123.83.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Alcon Vision LLC |
Food and Beverage
In-kind items and services
|
Rhopressa | General | $123.83 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
|
92014
Established patient complete exam of visual system
|
1,112 | 1,079 | $420.00 | $139.79 |
|
99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
|
351 | 298 | $300.00 | $99.11 |
|
92083
Exam of visual field with extended testing
|
233 | 228 | $215.00 | $71.49 |
|
92133
Imaging of optic nerve
|
230 | 228 | $220.00 | $39.62 |
|
92012
Established patient problem focused exam of visual system
|
184 | 145 | $300.00 | $99.34 |
|
66984
Removal of cataract with insertion of prosthetic lens
|
97 | 63 | $2905.00 | $580.68 |
|
92134
Imaging of retina
|
84 | 77 | $220.00 | $44.72 |
|
92136
Measurement of corneal curvature and depth of eye
|
73 | 72 | $170.00 | $51.82 |
|
92004
New patient complete exam of visual system
|
52 | 52 | $500.00 | $164.56 |
|
66821
Removal of recurring cataract in lens capsule using a laser
|
33 | 32 | $1508.03 | $393.24 |
|
99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
|
32 | 32 | $400.00 | $139.12 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Latanoprost | Latanoprost | 1,322 | 100,201 | $19,669.76 | 401 |
| Timolol Maleate | Timolol Maleate | 505 | 39,311 | $11,230.01 | 158 |
| Dorzolamide-Timolol | Dorzolamide Hcl/Timolol Maleat | 275 | 19,950 | $5,956.62 | 90 |
| Brimonidine Tartrate | Brimonidine Tartrate | 253 | 18,080 | $9,813.00 | 81 |
| Prednisolone Acetate | Prednisolone Acetate | 188 | 5,301 | $7,791.15 | 138 |
| Moxifloxacin | Moxifloxacin Hcl | 162 | 2,498 | $3,285.28 | 115 |
| Dorzolamide Hcl | Dorzolamide Hcl | 101 | 8,300 | $2,346.60 | 34 |
| Bromfenac Sodium | Bromfenac Sodium | 83 | 2,754 | $18,545.89 | 60 |
| Travoprost | Travoprost | 68 | 4,517 | $14,720.54 | 19 |
| Erythromycin | Erythromycin Base | 56 | 1,045 | $866.78 | 28 |
| Lumigan | Bimatoprost | 54 | 3,733 | $37,983.67 | 21 |
| Simbrinza | Brinzolamide/Brimonidine Tart | 38 | 2,696 | $18,029.10 | 11 |
| Brinzolamide | Brinzolamide | 35 | 2,516 | $6,645.46 | — |
| Alphagan P | Brimonidine Tartrate | 34 | 2,083 | $19,544.31 | — |
| Rhopressa | Netarsudil Mesylate | 29 | 2,076 | $22,837.38 | 11 |
| Restasis | Cyclosporine | 27 | 1,890 | $34,719.13 | 11 |
| Rocklatan | Netarsudil Mesylat/Latanoprost | 25 | 1,644 | $18,825.69 | — |
| Azopt | Brinzolamide | 24 | 1,759 | $13,660.37 | — |
| Dorzolamide-Timolol | Dorzolamide/Timolol/Pf | 24 | 1,800 | $5,344.01 | 11 |
| Pilocarpine Hcl | Pilocarpine Hcl | 23 | 1,905 | $1,642.37 | — |
| Combigan | Brimonidine Tartrate/Timolol | 22 | 1,599 | $16,978.64 | — |
| Zioptan | Tafluprost/Pf | 22 | 1,800 | $14,519.19 | — |
| Ketorolac Tromethamine | Ketorolac Tromethamine | 21 | 981 | $326.10 | 17 |
| Tafluprost | Tafluprost/Pf | 21 | 1,470 | $4,646.54 | — |
| Travatan Z | Travoprost | 19 | 1,398 | $15,930.56 | — |
(top 25 shown)
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 207W00000X
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - OPHTHALMOLOGY
I20080804000508
MA
4486662772
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Lexington Eye Associates, Inc
21 Worthen Rd, Lexington, MA 024214835
Phone: 7818621620
Lexington Eye Associates - Bid
21 Worthen Rd, Lexington, MA 024214835
Phone: 7818621620
Lexington Eye Associates, Inc
300 Baker Ave, Concord, MA 017422131
Phone: 9783691310
Lexington Eye Associates, Inc
534 Boston Post Rd, Sudbury, MA 017763508
Phone: 7818762020
Lexington Eye Associates, Inc
1040 Massachusetts Ave, Arlington, MA 024764315
Phone: 7816481620
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Ophthalmology
Doctor of Medicine (M.D.)
Optometrist
Doctor of Optometry
Ophthalmology
Ophthalmology - Pediatric Ophthalmology and Strabismus Specialist
Doctor of Medicine (M.D.)
Ophthalmology
Doctor of Medicine (M.D.)
Ophthalmology
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated May 02, 2006.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Ophthalmology Specialists in Lexington
- Dr. Kenneth Mckay, MD
- Dr. Michael Chang, MD
- Dr. Chelsea Gottschalk, MD
- Dr. Jennifer Mullon, MD
- Dr. Nina Farivari, MD
- Dr. Ann Burnham, MD
Mailing Address
21 Worthen Rd
Lexington, MA 024214835
Phone: 7818621620