MS. ISABEL ALONSO ZIEJA O.D.
NPI 1033341029
Optometrist in Kittery, ME
About Ms. Isabel Alonso Zieja O.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. ISABEL ALONSO ZIEJA O.D. (NPI 1033341029) is an individual optometrist in Kittery, Maine, licensed in New Hampshire (833) and active in the NPI registry since August 2009. She is enrolled in Medicare PECOS and is a graduate of New England College Of Optometry (2009).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Ms. Isabel Alonso Zieja O.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Isabel Alonso Zieja reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Kittery, ME 03904
- Reassigned Medicare billing, Maine enrollment
- 8 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 03904 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 9
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Isabel Alonso Zieja's NPI number?
The NPI number for Isabel Alonso Zieja is 1033341029. It was assigned to this individual provider in the NPPES registry on August 10, 2009. The provider is also known as Isabel Alonso Od.
Where is Isabel Alonso Zieja located?
Isabel Alonso Zieja practices at 99 Us Route 1 Byp Ste A, Kittery, ME 03904. The listed phone number is (207) 439-0410.
What is Isabel Alonso Zieja's specialty?
The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.
Is Isabel Alonso Zieja enrolled in Medicare?
Yes. Isabel Alonso Zieja is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Isabel Alonso Zieja's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Isabel Alonso Zieja reassigns Medicare benefits to Kittery Optometric Associates, PLLC (Kittery, ME). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Isabel Alonso Zieja's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Isabel Alonso Zieja accept?
Health plans from Anthem Blue Cross and Blue Shield list Isabel Alonso Zieja as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Isabel Alonso Zieja was last updated on July 6, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Ms. Isabel Alonso Zieja, O.D. · NPI 1033341029
Optometrist provider in Kittery, Maine. Individual provider, active in the CMS NPPES registry since August 10, 2009.
## Identity
- **NPI:** 1033341029 (Entity type: Individual)
- **Enumerated:** August 10, 2009
- **Primary specialty:** Optometrist · taxonomy 152W00000X
- **State license:** 833 (New Hampshire)
- **Sole proprietor:** No
## Practice location
- **Address:** 99 US ROUTE 1 BYP, STE A, Kittery, ME 03904-1792
- **Phone:** (207) 439-0410 · **Fax:** (207) 439-8353
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** Kittery Optometric Associates, PLLC (NPI 1447343926, Kittery, ME), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** New England College Of Optometry, class of 2009
## Record status
- **NPPES last updated:** July 6, 2016
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Source: [NPI Profile](https://npiprofile.com/npi/1033341029) · Data from the CMS NPPES public registry.