Vanessa Loo Chang & Dennis M Chang OD Ptr
NPI 1770787392 · Optometrist · Mcallen, TX
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Vanessa Loo Chang & Dennis M Chang OD Ptr is a Optometrist organization in Mcallen, TX (NPI 1770787392).
Provider details
- NPI number
- 1770787392
- Entity type
- Organization
- Primary specialty
- OptometristEye and Vision Services Providers
- Organization subpart
- No
- Authorized official
- Vanessa Chang, Partner(956) 664-0444
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
19 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
Other names (DBA / former)
- Doing business as
- Nolana Eye Care
Registry dates
- Enumerated
- 2007-06-14
- Last updated
- 2012-05-16
Frequently asked questions
- What is Vanessa Loo Chang & Dennis M Chang OD Ptr's NPI number?
- Vanessa Loo Chang & Dennis M Chang OD Ptr's National Provider Identifier (NPI) is 1770787392, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Vanessa Loo Chang & Dennis M Chang OD Ptr?
- Vanessa Loo Chang & Dennis M Chang OD Ptr is classified in the NPPES registry as Optometrist (Eye and Vision Services Providers).
- Where is Vanessa Loo Chang & Dennis M Chang OD Ptr located?
- Vanessa Loo Chang & Dennis M Chang OD Ptr's practice location on file with NPPES is 318 W Nolana, Mcallen, TX 78504-2528.
- What is Vanessa Loo Chang & Dennis M Chang OD Ptr's phone number?
- The practice phone number listed in the NPPES registry for Vanessa Loo Chang & Dennis M Chang OD Ptr is (956) 664-0444.
- Does Vanessa Loo Chang & Dennis M Chang OD Ptr accept Medicare?
- Vanessa Loo Chang & Dennis M Chang OD Ptr is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Vanessa Loo Chang & Dennis M Chang OD Ptr?
- The authorized official listed on Vanessa Loo Chang & Dennis M Chang OD Ptr's NPPES record is Vanessa Chang, Partner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Vanessa Loo Chang & Dennis M Chang OD Ptr's NPI active?
- Yes — Vanessa Loo Chang & Dennis M Chang OD Ptr's NPI (1770787392) is active in the NPPES registry as of the last update on 2012-05-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.