MISS EE SING ANGELA ONG ACNP
NPI 1336577287
Nurse Practitioner - Acute Care in San Antonio, TX
About Miss Ee Sing Angela Ong Acnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MISS EE SING ANGELA ONG ACNP (NPI 1336577287) is an individual acute care provider in San Antonio, Texas, licensed in Texas (AP124609) and active in the NPI registry since October 2013. She is enrolled in Medicare PECOS, is affiliated with Christus Santa Rosa Hospital-san Marcos, and maintains a secondary practice location in San Antonio.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Location 1
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Miss Ee Sing Angela Ong Acnp is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
6Medicare enrollment records show Ee Sing Ong reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Marcos, TX 78666
- Reassigned Medicare billing, Texas enrollment
- 31 clinicians in this Medicare group
Austin, TX 78759
- Reassigned Medicare billing, Texas enrollment
- 89 clinicians in this Medicare group
Cedar Park, TX 78613
- Reassigned Medicare billing, Texas enrollment
- 104 clinicians in this Medicare group
Cedar Park, TX 78613
- Reassigned Medicare billing, Texas enrollment
- 828 clinicians in this Medicare group
Round Rock, TX 78665
- Reassigned Medicare billing, Texas enrollment
- 65 clinicians in this Medicare group
Dallas, TX 75231
- Reassigned Medicare billing, Texas enrollment
- 1,208 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Christus Santa Rosa Hospital-San Marcos
Acute Care Hospitals · San Marcos, TXAscension Seton Williamson
Acute Care Hospitals · Round Rock, TXAscension Seton Hays
Acute Care Hospitals · Kyle, TXResolute Health Hospital
Acute Care Hospitals · New Braunfels, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 78232 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN ANTONIO, TX 78232
SAN ANTONIO, TX 78232
SAN ANTONIO, TX 78232
SAN ANTONIO, TX 78232
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Ee Sing Ong's NPI number?
The NPI number for Ee Sing Ong is 1336577287. It was assigned to this individual provider in the NPPES registry on October 30, 2013. The provider is also known as Miss Angela Ong Acnp-Bc.
Where is Ee Sing Ong located?
Ee Sing Ong practices at 16620 N Us Highway 281 Ste 300, San Antonio, TX 78232. The listed phone number is (210) 309-1405.
What is Ee Sing Ong's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.
Is Ee Sing Ong enrolled in Medicare?
Yes. Ee Sing Ong is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Ee Sing Ong's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ee Sing Ong reassigns Medicare benefits to 6 organizations: Central Texas Intensivists, PLLC (San Marcos, TX), Austin Critical Care Specialists PA (Austin, TX), Usacs Critical Care Medicine Services Of Texas, PLLC (Cedar Park, TX), Usacs Integrated Acute Care Services Of Texas, PLLC (Cedar Park, TX), Usacs Observation Medicine Services Of Texas PLLC (Round Rock, TX) and 1 more organization, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Ee Sing Ong's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ee Sing Ong accept?
Health plans from Blue Cross and Blue Shield of Texas, CHRISTUS Health Plan, Harbor Health, Oscar Health and Oscar Insurance Company and 2 other insurers list Ee Sing Ong as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Ee Sing Ong affiliated with any hospitals?
According to CMS data, Ee Sing Ong is affiliated with Christus Santa Rosa Hospital-San Marcos, Ascension Seton Williamson, Ascension Seton Hays and Resolute Health Hospital.
When was this NPI record last updated?
The NPPES record for Ee Sing Ong was last updated on May 16, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Miss Ee Sing Angela Ong, ACNP · NPI 1336577287
Acute Care physician in San Antonio, Texas. Individual provider, active in the CMS NPPES registry since October 30, 2013.
## Identity
- **NPI:** 1336577287 (Entity type: Individual)
- **Enumerated:** October 30, 2013
- **Primary specialty:** Nurse Practitioner - Acute Care · taxonomy 363LA2100X
- **State license:** AP124609 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 16620 N US HIGHWAY 281 STE 300, San Antonio, TX 78232-2679
- **Phone:** (210) 309-1405 · **Fax:** (210) 688-4596
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 6 organizations under Medicare reassignment (form CMS-855R): Central Texas Intensivists, PLLC (NPI 1205690765, San Marcos, TX); Austin Critical Care Specialists PA (NPI 1447435805, Austin, TX); Usacs Critical Care Medicine Services Of Texas, PLLC (NPI 1023522554, Cedar Park, TX); Usacs Integrated Acute Care Services Of Texas, PLLC (NPI 1801300322, Cedar Park, TX); Usacs Observation Medicine Services Of Texas PLLC (NPI 1134606353, Round Rock, TX); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2013
## Record status
- **NPPES last updated:** May 16, 2019
- **Other identifiers:** Medicaid 334363404 (TX); Medicaid 334363401 (TX)
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Source: [NPI Profile](https://npiprofile.com/npi/1336577287) · Data from the CMS NPPES public registry.