Theresa Zaker, OD
NPI 1518164664 · Optometrist · Orland Park, IL
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Theresa Zaker, OD is a Optometrist provider in Orland Park, IL (NPI 1518164664).
Provider details
- NPI number
- 1518164664
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Female
- Sole proprietor
- No
- License
- 046.009965 (IL)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-07-02
- Last updated
- 2011-05-26
Frequently asked questions
- What is Theresa Zaker's NPI number?
- Theresa Zaker's National Provider Identifier (NPI) is 1518164664, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Theresa Zaker's specialty?
- Theresa Zaker is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Theresa Zaker located?
- Theresa Zaker's practice location on file with NPPES is 656 Orland Square Dr, Orland Park, IL 60462-3219.
- What is Theresa Zaker's phone number?
- The practice phone number listed in the NPPES registry for Theresa Zaker is (708) 364-0592.
- Does Theresa Zaker accept Medicare?
- Theresa Zaker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Theresa Zaker's NPI active?
- Yes — Theresa Zaker's NPI (1518164664) is active in the NPPES registry as of the last update on 2011-05-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.