Antoinette T. Khowong, MEDICAL DOCTOR
Obstetrics Physician · Roseville, CA
Antoinette T. Khowong, MEDICAL DOCTOR is an obstetrics physician with a practice address in Roseville, California, and NPI 1033274238, issued on Dec 27, 2006. Check the license (California A105245, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Antoinette T. Khowong
- Credential
- MEDICAL DOCTOR
- Primary taxonomy
- Obstetrics Physician 207VX0000X
- License numbers
- A105245 CA
6252 KS
Self-reported in NPPES; status is on the state search - Practice location
- 5 Medical Plaza Dr, Roseville, CA 95661
- Phone
- (916) 782-2229
- Enumerated
- Dec 27, 2006
- Record last updated
- Dec 16, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (916) 797-9414
- Medicare enrollment
- Enrolled (PECOS I20081114000703); accepts Medicare assignment
- Medical or professional school
- University Of Colorado School Of Medicine, Denver, 2003
- Entity
- Type 1 · individual
8 nearest obstetrics physician records → All 174 in California → Look up another NPI →
Also registered at 5 Medical Plaza Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shawn Aghili, M.D.Critical Care Medicine (Internal Medicine) Physician1871531590
- Brian Bellucci, M.D.Pulmonary Disease Physician1801114988
- Paul Bilunos, M.D.Internal Medicine Physician1891737946
- Harold Burton, MEDICAL DOCTORGynecology Physician1235107947
- Dina Canavero, MEDICAL DOCTORObstetrics & Gynecology Physician1386612083
- Alan Cubre, M.D.Pulmonary Disease Physician1831131895
Verify Antoinette T. Khowong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A105245Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
44% more Medicare Part D claims than the average obstetrics physician in 2024
315 Medicare Part D claims for 198 beneficiaries, against an average of 218 among the 863 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Estradiol77 claims
- Yuvafem25 claims
- Clobetasol Propionate19 claims
- Estring15 claims
- Fluconazole13 claims
- Acyclovir12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Permanente Medical Group IncRoseville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Antoinette T. Khowong among 174 obstetrics physician records in California
Antoinette T. Khowong, MEDICAL DOCTOR is one of 174 obstetrics physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 56% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 52% of these records are
- Graduated2003 · median 2002 among the 91 with a school on file
- Record last updated2021 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207VX0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics Physician providers in California
There are 174 obstetrics physician records in California.
All 174 in California → Every provider in Roseville → Obstetrics Physician nationwide →
The 8 obstetrics physician records with the nearest ZIP codes
- Olivia Juhn, MEDICAL DOCTORRoseville, CA 956611306048624
- Jerry Cline, M.D.Vacaville, CA 956881336126374
- Elizabeth Micks, MD, MPHArcata, CA 955211144405119
- Elena Langdon, MDSacramento, CA 958161033233085
- Christine Kim, M.D.Sacramento, CA 958171982671533
- Rebecca Surrey, MDSacramento, CA 958171174026959
- Dariush Tonkaboni, M.D.Sacramento, CA 958231487816146
- Derek Wong, M.D.Sacramento, CA 958251710218599
Common questions
What is Antoinette T. Khowong, MEDICAL DOCTOR's NPI number?
Antoinette T. Khowong, MEDICAL DOCTOR's National Provider Identifier (NPI) is 1033274238, issued on Dec 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Antoinette T. Khowong, MEDICAL DOCTOR located?
The NPPES record lists a practice address at 5 Medical Plaza Dr, Roseville, CA, 95661. Phone: (916) 782-2229. Providers update this record themselves, so call before visiting.
How can I verify Antoinette T. Khowong, MEDICAL DOCTOR's license?
NPPES lists California license number A105245, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Antoinette T. Khowong, MEDICAL DOCTOR prescribe under Medicare Part D?
In 2024, Antoinette T. Khowong, MEDICAL DOCTOR had 315 Medicare Part D claims for 198 beneficiaries; the average among obstetrics physician prescribers was 218. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.