Office listed in NPPES
5365 Walnut Ave, Suite A, Chino, CA 91710
(909) 620-1885
Confirm this address and number with the practice. Registry information may be outdated.
Physician registry profile
Duong Thieu Phung
MD · Chino, CA
Record details
- NPI
- 1588725659
- Registry updated
- 07/08/2007
- Imported
- 2026-11-03
- Registry specialty labels (English)
- Gynecology
Before arranging a visit
Confirm current services, ages treated, insurance, location, hospital affiliations and appointment availability directly with the practice. An active NPI does not verify current licensure, certification or practice status.
A registry specialty label does not establish that a clinician currently provides the particular care you need.
Background and affiliations
- Gender
- Male
- Medical school
- Northwestern University Feinberg Medical School · graduated 1997
- Offers telehealth
- No
- Accepts Medicare assignment
- Yes
Practice locations reported to Medicare
- 1226 N Park Ave, Pomona, CA 91768 · (909) 620-1888
Affiliated hospitals
- Pomona Valley Hospital Medical Center · Pomona, CA · CMS rating 3/5 · Birthing-Friendly (CMS)
Source: CMS Doctors and Clinicians and Hospital General Information. An affiliation does not confirm current privileges or the services offered there.
Industry payments
In 2025, drug and medical-device companies reported $305 in general payments to Duong Thieu Phung (3 payments). Largest: Gilead Sciences, Inc. ($250); Baxter Healthcare ($55.36). Research funding is excluded. These payments are public under the Sunshine Act, and a payment does not by itself mean a conflict of interest. CMS Open Payments
Insurance
- Medicare: accepts Medicare assignment (CMS).
- Other plans (for example Anthem Blue Cross (California), Medi-Cal (Medicaid), UnitedHealthcare) haven't been reported by this office yet. Call to confirm before booking.
Documented Medicare service activity
2024 Medicare-billed services:
For maternity care, confirm delivery services and the delivery hospital.
Reporting year: 2024. These are billed services or units in Original Medicare Part B, not total career experience, all patients, surgical case counts or a quality rating.
Scroll the table sideways to see every column.
| HCPCS | Billed services / units | Beneficiaries in this row | Service description (English) | Billing setting |
|---|---|---|---|---|
| 99213 | 37 | 19 | Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Non-facility |
| G0101 | 16 | 16 | Cervical or vaginal cancer screening; pelvic and clinical breast examination | Non-facility |
| Q0091 | 16 | 16 | Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory | Non-facility |
How to interpret these counts
CMS suppresses provider/service rows involving fewer than 11 beneficiaries. Services may repeat for one person, and beneficiaries cannot be added across rows. Facility/non-facility describes billing and does not establish a current hospital affiliation. These counts do not report case complexity, clinical outcomes or whether a treatment is appropriate for you.
Exact CMS source rows for this NPI · Checked 2026-11-03
Common questions
Where is Duong Thieu Phung's office?
The NPPES registry lists 5365 Walnut Ave, Suite A, Chino, CA 91710. Confirm the location before your visit; registry addresses can be out of date. The registry entry was last updated in 2007; Medicare’s current enrollment lists 1226 N Park Ave, Pomona, CA 91768.
What phone number is listed for Duong Thieu Phung?
The registry lists (909) 620-1885. Practices sometimes change numbers; check the practice website if the call does not connect. Medicare lists (909) 620-1888 for this physician’s office.
What is Duong Thieu Phung's specialty?
The registry lists Gynecology. A registry specialty is self-reported and does not confirm board certification or the services offered today.
Does Duong Thieu Phung bill Medicare?
CMS data shows publicly disclosed Original Medicare Part B services billed in 2024 (see above). That does not confirm the practice is accepting new Medicare patients; ask the office.
What is Duong Thieu Phung's NPI number?
NPI 1588725659, a public identifier from the national registry. It does not by itself confirm a current license.
Which hospitals is Duong Thieu Phung affiliated with?
Medicare records list Pomona Valley Hospital Medical Center (Pomona, CA). An affiliation does not confirm current privileges.
Does Duong Thieu Phung offer telehealth?
CMS records do not indicate telehealth services. Ask the office which visits can be done remotely.
Patient reviews
Reviews are moderated before publication, and negative reviews are published on the same terms as positive ones. Ratings describe reported patient experience, not clinical quality.
Other gynecologists nearby
- Nichole Marie Adair, DOChino, CA
- Robert Lopez, MDChino, CA
- Pamela Estrada Higa, MDChino Hills, CA
- Corazon S Navarro, MDMontclair, CA
- Norman L. Lamberty, MDMontclair, CA
- Thomas T, Lee, MDMontclair, CA