Danier Ong, MD
NPI 1255073912 · Emergency Medicine Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Danier Ong, MD is a Emergency Medicine Physician provider in Saint Louis, MO (NPI 1255073912).
Provider details
- NPI number
- 1255073912
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 2026007838 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
4 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$20 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 4301 X StSacramento, CA 95817-2214Phone: (916) 734-2011
Registry dates
- Enumerated
- 2022-04-12
- Last updated
- 2026-05-26
- Certified
- 2026-05-26
Frequently asked questions
- What is Danier Ong's NPI number?
- Danier Ong's National Provider Identifier (NPI) is 1255073912, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Danier Ong's specialty?
- Danier Ong is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Danier Ong located?
- Danier Ong's practice location on file with NPPES is 1201 S Grand Blvd, Saint Louis, MO 63104-1016.
- What is Danier Ong's phone number?
- The practice phone number listed in the NPPES registry for Danier Ong is (314) 257-1320.
- Does Danier Ong accept Medicare?
- Danier Ong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Danier Ong's NPI active?
- Yes — Danier Ong's NPI (1255073912) is active in the NPPES registry as of the last update on 2026-05-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.