Isabel Alonso Zieja, O.D.
Optometrist · Kittery, ME
Isabel Alonso Zieja, O.D. is an optometrist with a practice address in Kittery, Maine, and NPI 1033341029, issued on Aug 10, 2009. Check the license with the Maine board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Isabel Alonso Zieja
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 833 NH
Self-reported in NPPES; status is on the state search - Practice location
- 99 US Route 1 Byp, Kittery, ME 03904
- Phone
- (207) 439-0410
- Enumerated
- Aug 10, 2009
- Record last updated
- Jul 6, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (207) 439-8353
- Medicare enrollment
- Enrolled (PECOS I20160816000290); accepts Medicare assignment
- Medical or professional school
- New England College Of Optometry, 2009
- Entity
- Type 1 · individual
8 nearest optometrist records → All 310 in Maine → Look up another NPI →
Also registered at 99 US Route 1 Byp
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michelle Diaz, O.D.Optometrist1699778621
- Karen Healy, O.D.Optometrist1588759112
- John Higgins, O.D.Optometrist1083707582
- Thurston Monson, M.D.Ophthalmology Physician1982768743
- David Seaton, O.D.Optometrist1225124878
- Stanley Shapleigh, O.D.Optometrist1851486351
Verify Isabel Alonso Zieja in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maine board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average optometrist in 2024
90 Medicare Part D claims for 26 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 39% of claims.
Most prescribed
- Latanoprost37 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): 99.6 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).
Bills Medicare through one group practice
- Kittery Optometric Associates, PLLCKittery, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Isabel Alonso Zieja among 310 optometrist records in Maine
Isabel Alonso Zieja, O.D. is one of 310 optometrist records with a practice address in Maine. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 60% of them.
- NPI issued2009 · 60% of these records are older, 38% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2009 · median 2008 among the 212 with a school on file
- Record last updated2016 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 optometrist records list a practice address in Kittery
They are 10 of the 175 NPPES records with a practice address in Kittery, and 310 optometrist records in Maine.
All 310 in Maine → Every provider in Kittery → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Michelle Diaz, O.D.Kittery, ME 039041699778621
- Karen Healy, O.D.Kittery, ME 039041588759112
- John Higgins, O.D.Kittery, ME 039041083707582
- Tyler Lowe, O.D.Kittery, ME 039041275852055
- David Seaton, O.D.Kittery, ME 039041225124878
- Stanley Shapleigh, O.D.Kittery, ME 039041851486351
- Joshua Visalli, ODKittery, ME 039041720577638
- Kevin Webb, O.D.Kittery, ME 039041124113618
Common questions
What is Isabel Alonso Zieja, O.D.'s NPI number?
Isabel Alonso Zieja, O.D.'s National Provider Identifier (NPI) is 1033341029, issued on Aug 10, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Isabel Alonso Zieja, O.D. located?
The NPPES record lists a practice address at 99 US Route 1 Byp, Kittery, ME, 03904. Phone: (207) 439-0410. Providers update this record themselves, so call before visiting.
How can I verify Isabel Alonso Zieja, O.D.'s license?
Search the Maine board that licenses this profession; the NPPES record confirms identity only.
How much does Isabel Alonso Zieja, O.D. prescribe under Medicare Part D?
In 2024, Isabel Alonso Zieja, O.D. had 90 Medicare Part D claims for 26 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.
What is Isabel Alonso Zieja, O.D.'s MIPS final score?
The 2023 MIPS final score is 99.6 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.