Mark Elton Ong
NPI 1871144303 · Physical Therapist · Belvidere, IL
Mark Elton Ong is a Physical Therapist provider in Belvidere, IL (NPI 1871144303).
Provider details
- NPI number
- 1871144303
- Entity type
- Individual
- Primary specialty
- Physical TherapistRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 070021359 (IL)
Specialties & taxonomies
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 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
- 2019-09-25
- Last updated
- 2019-09-25
Frequently asked questions
- What is Mark Elton Ong's NPI number?
- Mark Elton Ong's National Provider Identifier (NPI) is 1871144303, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Elton Ong's specialty?
- Mark Elton Ong is listed in the NPPES registry with a primary specialty of Physical Therapist (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is Mark Elton Ong located?
- Mark Elton Ong's practice location on file with NPPES is 2250 Pearl St, Belvidere, IL 61008-6022.
- What is Mark Elton Ong's phone number?
- The practice phone number listed in the NPPES registry for Mark Elton Ong is (815) 544-0358.
- Is Mark Elton Ong's NPI active?
- Yes — Mark Elton Ong's NPI (1871144303) is active in the NPPES registry as of the last update on 2019-09-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.