John Ju, OD
NPI 1639214851 · Optometrist · Monterey Park, CA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Ju, OD is a Optometrist provider in Monterey Park, CA (NPI 1639214851).
Provider details
- NPI number
- 1639214851
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Male
- Sole proprietor
- No
- License
- OPT6062TPA (CA)
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
Registry dates
- Enumerated
- 2007-02-21
- Last updated
- 2015-05-12
Frequently asked questions
- What is John Ju's NPI number?
- John Ju's National Provider Identifier (NPI) is 1639214851, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Ju's specialty?
- John Ju is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is John Ju located?
- John Ju's practice location on file with NPPES is 616 N Garfield Ave Ste 100, Monterey Park, CA 91754-1153.
- What is John Ju's phone number?
- The practice phone number listed in the NPPES registry for John Ju is (626) 288-3555.
- Does John Ju accept Medicare?
- John Ju is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Ju's NPI active?
- Yes — John Ju's NPI (1639214851) is active in the NPPES registry as of the last update on 2015-05-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.