Julia Ernst, MD, PHD
Ophthalmology Physician · Burlington, MA
Julia Ernst, MD, PHD is an ophthalmology physician with a practice address in Burlington, Massachusetts, and NPI 1588239271, issued on May 25, 2021. Check the license (Massachusetts 1023058, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Julia Ernst
- Credential
- MD, PHD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 1023058 MA
Self-reported in NPPES; status is on the state search - Practice location
- 41 Mall RD, Burlington, MA 01805
- Phone
- (781) 744-8000
- Enumerated
- May 25, 2021
- Record last updated
- Apr 21, 2025
- Medicare enrollment
- Enrolled (PECOS I20250506000543); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 791 in Massachusetts → Look up another NPI →
Also registered at 41 Mall RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Juliet Aborn, REGISTERED NURSECertified Registered Nurse Anesthetist1932727930
- Omar Abuqamar, M.D., M.M.S.C.,Ophthalmology Physician1437640414
- Emily Adams, PA-CPhysician Assistant1457685752
- Oluwaseun Adebagbo, MDStudent in an Organized Health Care Education/Training Program1588468755
- Christopher Adler, PAPhysician Assistant1972848463
- Tinamarie Adly, NPFamily Nurse Practitioner1154041572
Verify Julia Ernst in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 1023058Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average ophthalmology physician in 2024
186 Medicare Part D claims for 78 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 41% of claims.
Most prescribed
- Prednisolone Acetate32 claims
- Ketorolac Tromethamine21 claims
- Latanoprost20 claims
- Ofloxacin20 claims
- Brimonidine Tartrate16 claims
- Restasis15 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.
Industry payments in 2024: $143.96
1 payment: food and beverage; the largest payer was Sight Sciences, Inc. The 13,221 providers of this specialty with any payment received $4,535.02 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Lahey Clinic IncPeabody, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Julia Ernst among 791 ophthalmology physician records in Massachusetts
Julia Ernst, MD, PHD 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 2021, is newer than 91% of them.
- NPI issued2021 · 91% of these records are older, 5% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2020 · median 2002 among the 518 with a school on file
- Record last updated2025 · 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).
Ophthalmology Physician providers in Massachusetts
There are 791 ophthalmology physician records in Massachusetts.
All 791 in Massachusetts → Every provider in Burlington → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Omar Abuqamar, M.D., M.M.S.C.,Burlington, MA 018051437640414
- Amal Alwreikat, M.D.Burlington, MA 018051760818660
- Amer Alwreikat, M.D.Burlington, MA 018051215302146
- Carolyn Anderson, M.D.Burlington, MA 018051376644773
- Jeffrey Chang, M.D.Burlington, MA 018051154456226
- Paul Cotran, MDBurlington, MA 018051043302862
- Kendra Klein-Mascia, MDBurlington, MA 018051205192697
- Jeffrey Marx, MDBurlington, MA 018051851312367
Common questions
What is Julia Ernst, MD, PHD's NPI number?
Julia Ernst, MD, PHD's National Provider Identifier (NPI) is 1588239271, issued on May 25, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Julia Ernst, MD, PHD located?
The NPPES record lists a practice address at 41 Mall RD, Burlington, MA, 01805. Phone: (781) 744-8000. Providers update this record themselves, so call before visiting.
How can I verify Julia Ernst, MD, PHD's license?
NPPES lists Massachusetts license number 1023058, 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 Julia Ernst, MD, PHD prescribe under Medicare Part D?
In 2024, Julia Ernst, MD, PHD had 186 Medicare Part D claims for 78 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.