John David Lonsdale, M.D.
Ophthalmology Physician · Lewiston, ME
John David Lonsdale, M.D. is an ophthalmology physician with a practice address in Lewiston, Maine, and NPI 1669583662, issued on Aug 31, 2006. Check the license (Maine 011989, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- John David Lonsdale
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 011989 ME
Self-reported in NPPES; status is on the state search - Practice location
- 181 Russell St, Lewiston, ME 04240
- Phone
- (207) 784-1814
- Enumerated
- Aug 31, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (207) 783-3159
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 98 in Maine → Look up another NPI →
Also registered at 181 Russell St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Troy Avery, O.D.Optometrist1497857429
Verify John David Lonsdale in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license 011989Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.8 times the Medicare Part D claims of the average ophthalmology physician in 2024
4,244 Medicare Part D claims for 955 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 47% of claims.
Most prescribed
- Lumigan559 claims
- Latanoprost463 claims
- Prednisolone Acetate443 claims
- Ketorolac Tromethamine434 claims
- Moxifloxacin429 claims
- Timolol Maleate304 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 practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $387.94
23 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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.
John David Lonsdale among 98 ophthalmology physician records in Maine
John David Lonsdale, M.D. is one of 98 ophthalmology physician records with a practice address in Maine. 68% 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 24% of them.
- NPI issued2006 · 24% of these records are older, 39% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileNo · 51% of these records are
- Record last updated2007 · 63% 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 Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Maine
There are 98 ophthalmology physician records in Maine.
All 98 in Maine → Every provider in Lewiston → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Kenneth Wolf, M.D.Lewiston, ME 042401417952235
- Martin Whitaker, M.D.Norway, ME 042681003805995
- William Atlee, M.D.Augusta, ME 043301548236532
- Jeffrey Dempski, D.O.Augusta, ME 043301144314568
- Maroulla Gleaton, M.D.Augusta, ME 043301881660074
- Linda Schumacher-Feero, M.D.Augusta, ME 043301821064023
- Linda Morrison, MDPortland, ME 041031023014198
- Atish AminPortland, ME 041021154066173
Common questions
What is John David Lonsdale, M.D.'s NPI number?
John David Lonsdale, M.D.'s National Provider Identifier (NPI) is 1669583662, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John David Lonsdale, M.D. located?
The NPPES record lists a practice address at 181 Russell St, Lewiston, ME, 04240. Phone: (207) 784-1814. Providers update this record themselves, so call before visiting.
How can I verify John David Lonsdale, M.D.'s license?
NPPES lists Maine license number 011989, as entered by the provider. Search the Maine Board of Licensure in Medicine at https://www.maine.gov/md/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John David Lonsdale, M.D. prescribe under Medicare Part D?
In 2024, John David Lonsdale, M.D. had 4,244 Medicare Part D claims for 955 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is John David Lonsdale, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. 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.