ANTOINETTE T KHOWONG MEDICAL DOCTOR
NPI 1033274238
Obstetrics & Gynecology - Obstetrics in Roseville, CA
About Antoinette T Khowong Medical Doctor NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ANTOINETTE T KHOWONG MEDICAL DOCTOR (NPI 1033274238) is an individual obstetrics provider in Roseville, California, licensed in California (A105245) and active in the NPI registry since December 2006. She is enrolled in Medicare PECOS and is a graduate of University Of Colorado School Of Medicine, Denver (2003).
NPPES Registry Identity
Specialties & Licenses 2
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
Antoinette T Khowong Medical Doctor 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
2Medicare enrollment records show Antoinette Khowong reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Roseville, CA 95661
- Reassigned Medicare billing, California enrollment
- 11 clinicians in this Medicare group
Stockton, CA 95210
- Reassigned Medicare billing, California enrollment
- 20,078 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 95661 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.
ROSEVILLE, CA 95661
ROSEVILLE, CA 95661
ROSEVILLE, CA 95661
ROSEVILLE, CA 95661
ROSEVILLE, CA 95661
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 Antoinette Khowong's NPI number?
The NPI number for Antoinette Khowong is 1033274238. It was assigned to this individual provider in the NPPES registry on December 27, 2006.
Where is Antoinette Khowong located?
Antoinette Khowong practices at 5 Medical Plaza Dr Suite 250, Roseville, CA 95661. The listed phone number is (916) 782-2229.
What is Antoinette Khowong's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Obstetrics, with taxonomy code 207VX0000X.
Is Antoinette Khowong enrolled in Medicare?
Yes. Antoinette Khowong 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 Antoinette Khowong's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Antoinette Khowong reassigns Medicare benefits to 2 organizations: Associates In Womens Health Care (Roseville, CA) and Permanente Medical Group Inc (Stockton, CA). 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 Antoinette Khowong's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Antoinette Khowong was last updated on December 16, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Antoinette T Khowong, MEDICAL DOCTOR · NPI 1033274238
Obstetrics physician in Roseville, California. Individual provider, active in the CMS NPPES registry since December 27, 2006.
## Identity
- **NPI:** 1033274238 (Entity type: Individual)
- **Enumerated:** December 27, 2006
- **Primary specialty:** Obstetrics & Gynecology - Obstetrics · taxonomy 207VX0000X
- **State license:** A105245 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 5 MEDICAL PLAZA DR, SUITE 250, Roseville, CA 95661-2865
- **Phone:** (916) 782-2229 · **Fax:** (916) 797-9414
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Associates In Womens Health Care (NPI 1366419491, Roseville, CA); Permanente Medical Group Inc (NPI 1548343510, Stockton, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Colorado School Of Medicine, Denver, class of 2003
## Record status
- **NPPES last updated:** December 16, 2021
---
Source: [NPI Profile](https://npiprofile.com/npi/1033274238) · Data from the CMS NPPES public registry.