NPI registry status
Active
2026 NPPES data Optometrist NPI 1831243484 O.D.
Verify on CMS → Lisa Ziliak, O.D.
Optometrist in Washington, District of Columbia.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 60,484 in Optometrist, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
What the federal data shows
Lisa Ziliak, O.D. is an Optometrist in Washington, District of Columbia, listed in the federal CMS National Provider Identifier registry.
- #55
- Optometrist rank among District of Columbia specialties
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
CMS NPPES provider registry desk
NPI 1831243484 · Optometrist
NPI-10 · ENUM-MID · TAX-MEGA · RX-NONE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1831243484
- ENUM-MID 2007
- TAX-MEGA 60K Optometrist
- RX-NONE No Part D
- BOOK-THIN 102 in District of Columbia
- PHOTO-ENUM Mark Robins · 2007
What does the federal data show about Lisa Ziliak, O.D.?
Quality data not reportedPrimary specialty
Optometrist
Specialty distribution in District of Columbia
How Optometrist compares to other specialties among District of Columbia providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Optometrist. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1831243484 |
|---|---|
| Specialty | Optometrist |
| Credentials | O.D. |
| Gender | Female |
| NPI Issued | 01/22/2007 |
Optometrist Overview
How Lisa Ziliak, O.D. fits within the Optometrist landscape nationally.
60,484
Optometrist Providers in US
56
States with Optometrist
257
Avg Claims per Provider
Nationwide Optometrist peers with similar MIPS or enrollment year
Two federal-record peer sets for Ziliak, both outside District of Columbia so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Optometrist Providers in District of Columbia
Other clinicians with the same primary specialty enrolled in District of Columbia, drawn from the same CMS NPPES roster as Ziliak.
One of 102 Optometrist providers enrolled in District of Columbia, 5 are shown here.
Dr. Sara Aggarwal
O.D.
Washington, DC
Dr. Glenn Allouche
O.D.
Washington, DC
Mitzy Attokaren
Washington, DC
Dr. Gemini Irene Aurillo
O.D.
Washington, DC
Dr. Saba Ayalew
OD
Washington, DC
Compare Optometrist nationally: see state-by-state distribution →
Frequently Asked Questions
What is Lisa Ziliak, O.D.'s specialty? ▼
Lisa Ziliak, O.D. specializes in Optometrist and practices in Washington, District of Columbia. Credentials: O.D..
Where is Lisa Ziliak, O.D. located? ▼
Lisa Ziliak, O.D. is located at 6900 GEORGIA AVE NW, Washington, DC, 20307. Phone: (202) 782-4955.
What is Lisa Ziliak, O.D.'s NPI number? ▼
Lisa Ziliak, O.D.'s National Provider Identifier (NPI) is 1831243484, issued on 01/22/2007.
How many Optometrist providers are there in the US? ▼
There are 60,484 Optometrist providers across 56 states in the US. The average Optometrist provider writes 257 Medicare Part D claims per year.
Does Lisa Ziliak, O.D. accept Medicare? ▼
Lisa Ziliak, O.D. appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Lisa Ziliak, O.D.'s credentials? ▼
Lisa Ziliak, O.D.'s NPI is 1831243484 with credentials O.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.