James W. Umlas, MD
Ophthalmology Physician · Lexington, MA
James W. Umlas, MD is an ophthalmology physician with a practice address in Lexington, Massachusetts, and NPI 1942268883, issued on May 2, 2006. Check the license (Massachusetts 78623, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- James W. Umlas
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 78623 MA
Self-reported in NPPES; status is on the state search - Practice location
- 21 Worthen RD, Lexington, MA 02421
- Phone
- (781) 862-1620
- Enumerated
- May 2, 2006
- Record last updated
- Jun 17, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicaid ID
- 3161242 MA
- Medicare enrollment
- Enrolled (PECOS I20080804000508); may accept Medicare assignment
- Medical or professional school
- Harvard Medical School, 1992
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 791 in Massachusetts → Look up another NPI →
Also registered at 21 Worthen RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sarah AndreozziHearing Instrument Specialist1417295106
- Naomi Angoff Chedd, LMHCMental Health Counselor1316277288
- Ann Burnham, M.D.Ophthalmology Physician1255481065
- Euin Cheong, ODOptometrist1396325528
- Nedda Del PlatoOphthalmology Physician1710481080
- Poonam Doshi, MDPediatric Ophthalmology and Strabismus Specialist Physician1770727745
Verify James W. Umlas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 78623Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average ophthalmology physician in 2024
3,657 Medicare Part D claims for 741 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Latanoprost1,322 claims
- Timolol Maleate505 claims
- Dorzolamide-Timolol275 claims
- Brimonidine Tartrate253 claims
- Prednisolone Acetate188 claims
- Moxifloxacin162 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 2 group practices
- Lexington Eye Associates - BidLexington, MA
- Lexington Eye Associates, IncArlington, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James W. Umlas among 791 ophthalmology physician records in Massachusetts
James W. Umlas, MD is one of 791 ophthalmology physician records with a practice address in Massachusetts. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 23% of them.
- NPI issued2006 · 23% of these records are older, 48% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1992 · median 2002 among the 518 with a school on file
- Record last updated2008 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
18 ophthalmology physician records list a practice address in Lexington
They are 18 of the 1,467 NPPES records with a practice address in Lexington, and 791 ophthalmology physician records in Massachusetts.
All 791 in Massachusetts → Every provider in Lexington → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Ann Burnham, M.D.Lexington, MA 024211255481065
- Michael Chang, M.D.Lexington, MA 024211366438624
- Nina Farivari, M.D.Lexington, MA 024211730576604
- Jeremy Kieval, M.D.Lexington, MA 024211457537136
- Harvey Lewis, M.D.Lexington, MA 024211447290978
- Olivia Liao, MDLexington, MA 024211174502454
- Li-Wei Lin, M.D.Lexington, MA 024211295781904
- O'Ine McCabe, M.D.Lexington, MA 024211689611634
Common questions
What is James W. Umlas, MD's NPI number?
James W. Umlas, MD's National Provider Identifier (NPI) is 1942268883, issued on May 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James W. Umlas, MD located?
The NPPES record lists a practice address at 21 Worthen RD, Lexington, MA, 02421. Phone: (781) 862-1620. Providers update this record themselves, so call before visiting.
How can I verify James W. Umlas, MD's license?
NPPES lists Massachusetts license number 78623, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does James W. Umlas, MD prescribe under Medicare Part D?
In 2024, James W. Umlas, MD had 3,657 Medicare Part D claims for 741 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.