Joanne Hoang D. Nguyen, D.O.
Emergency Medical Services (Emergency Medicine) Physician · Union City, CA
Joanne Hoang D. Nguyen, D.O. is an emergency medical services (emergency medicine) physician with a practice address in Union City, California, and NPI 1245289503, issued on May 6, 2006. Check the license (California 20A8713, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joanne Hoang D. Nguyen
- Credential
- D.O.
- Primary taxonomy
- Emergency Medical Services (Emergency Medicine) Physician 207PE0004X
- License number
- 20A8713 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3553 Whipple RD, Union City, CA 94587
- Phone
- (510) 454-1000
- Enumerated
- May 6, 2006
- Record last updated
- Jan 4, 2022
- Medicaid ID
- 00AX87130 CA
- Medicare enrollment
- Enrolled (PECOS I20041108000744); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 1997
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest emergency medical services (emergency medicine) physician records → All 233 in California → Look up another NPI →
Also registered at 3553 Whipple RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jaishree Acharya, M.D.Internal Medicine Physician1053334920
- Marie Agleham, MDAdult Medicine Physician1649298209
- Muhammad Aleem, M.D.Internal Medicine Physician1952480006
- Eleanor Anderson-Williams, M.D.Internal Medicine Physician1164576815
- Kristina Austin, M.D.Ophthalmology Physician1417007238
- Vijaya Basawaprasad, M.D.Internal Medicine Physician1588736326
Verify Joanne Hoang D. Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A8713Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
12.4 times the Medicare Part D claims of the average emergency medical services (emergency medicine) physician in 2024
3,612 Medicare Part D claims for 358 beneficiaries, against an average of 292 among the 1,653 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 123 claims were for opioids.
Most prescribed
- Atorvastatin Calcium300 claims
- Losartan Potassium183 claims
- Amlodipine Besylate167 claims
- Lisinopril149 claims
- Levothyroxine Sodium138 claims
- Hydrochlorothiazide137 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 IncUnion City, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joanne Hoang D. Nguyen among 233 emergency medical services (emergency medicine) physician records in California
Joanne Hoang D. Nguyen, D.O. is one of 233 emergency medical services (emergency medicine) physician records with a practice address in California. 69% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 50% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 42% of these records are
- Graduated1997 · median 2002 among the 99 with a school on file
- Record last updated2022 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207PE0004X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medical Services (Emergency Medicine) Physician providers in California
There are 233 emergency medical services (emergency medicine) physician records in California.
All 233 in California → Every provider in Union City → Emergency Medical Services (Emergency Medicine) Physician nationwide →
The 8 emergency medical services (emergency medicine) physician records with the nearest ZIP codes
- Derek Ailes, M.D.Walnut Creek, CA 945961992001804
- Zita Konik, M.D.San Leandro, CA 945771861643058
- Casey LevisSaint Helena, CA 945741134073505
- William Turley, M.D.Saint Helena, CA 945741881881415
- Edwin Dietrich, MDOakland, CA 946021710221403
- Roneesha Knight, M.D.Oakland, CA 946021962724948
- Jordan Kramer, M.D.Oakland, CA 946061770592149
- Noel Hastings, MDEmeryville, CA 946081932337680
Common questions
What is Joanne Hoang D. Nguyen, D.O.'s NPI number?
Joanne Hoang D. Nguyen, D.O.'s National Provider Identifier (NPI) is 1245289503, issued on May 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joanne Hoang D. Nguyen, D.O. located?
The NPPES record lists a practice address at 3553 Whipple RD, Union City, CA, 94587. Phone: (510) 454-1000. Providers update this record themselves, so call before visiting.
How can I verify Joanne Hoang D. Nguyen, D.O.'s license?
NPPES lists California license number 20A8713, 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 Joanne Hoang D. Nguyen, D.O. prescribe under Medicare Part D?
In 2024, Joanne Hoang D. Nguyen, D.O. had 3,612 Medicare Part D claims for 358 beneficiaries; the average among emergency medical services (emergency medicine) physician prescribers was 292. 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.