Oren L. Weisberg, M.D.
Ophthalmology Physician · Lancaster, MA
Oren L. Weisberg, M.D. is an ophthalmology physician with a practice address in Lancaster, Massachusetts, and NPI 1427079995, issued on Jul 21, 2006. Check the license (Massachusetts 219635, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Oren L. Weisberg
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 219635 MA
Self-reported in NPPES; status is on the state search - Practice location
- 479 Old Union Tpke, Lancaster, MA 01523
- Phone
- (978) 537-3900
- Enumerated
- Jul 21, 2006
- Record last updated
- May 2, 2022
- Fax
- (978) 537-6030
- Medicare enrollment
- Enrolled (PECOS I20031230000080); accepts Medicare assignment
- Medical or professional school
- Albert Einstein College Of Medicine Of Yeshiva University, 1998
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 791 in Massachusetts → Look up another NPI →
Also registered at 479 Old Union Tpke
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sara Apollonio, O.D.Optometrist1427338755
- Hannah Ashe, LDOOptician1760359616
- Taylor Aucoin, LDOOptician1639757180
- Judy Bavongkhoun, ODOptometrist1104374628
- Elite Bor-Shavit, MDRetina Specialist (Ophthalmology) Physician1104303858
Verify Oren L. Weisberg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 219635Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average ophthalmology physician in 2024
26 Medicare Part D claims for 14 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D.
Most prescribed
- Erythromycin11 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.
The MIPS final score for 2023 (Medicare payment program): 97 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- D'Ambrosio Eye Care IncLancaster, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Oren L. Weisberg among 791 ophthalmology physician records in Massachusetts
Oren L. Weisberg, M.D. 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
- Graduated1998 · median 2002 among the 518 with a school on file
- Record last updated2022 · 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).
6 ophthalmology physician records list a practice address in Lancaster
They are 6 of the 98 NPPES records with a practice address in Lancaster, and 791 ophthalmology physician records in Massachusetts.
All 791 in Massachusetts → Every provider in Lancaster → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Joann Chang, M.D.Lancaster, MA 015231730359100
- Francis D'Ambrosio, M.D.Lancaster, MA 015231497789754
- Isaiah Giese, M.D.Lancaster, MA 015231235544933
- Derek Metcalfe, MDLancaster, MA 015231285211979
- Bin Wu, M.D.Lancaster, MA 015231437132529
- Amrik Pabley, M.D.Holden, MA 015201467435404
- Bruce Kolbe, M.D.Fiskdale, MA 015181700076841
- Michael Border, MDCharlton, MA 015071396795761
Common questions
What is Oren L. Weisberg, M.D.'s NPI number?
Oren L. Weisberg, M.D.'s National Provider Identifier (NPI) is 1427079995, issued on Jul 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Oren L. Weisberg, M.D. located?
The NPPES record lists a practice address at 479 Old Union Tpke, Lancaster, MA, 01523. Phone: (978) 537-3900. Providers update this record themselves, so call before visiting.
How can I verify Oren L. Weisberg, M.D.'s license?
NPPES lists Massachusetts license number 219635, 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 Oren L. Weisberg, M.D. prescribe under Medicare Part D?
In 2024, Oren L. Weisberg, M.D. had 26 Medicare Part D claims for 14 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Oren L. Weisberg, M.D.'s MIPS final score?
The 2023 MIPS final score is 97 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.