Dr. Thanh Gia Phung, MD
- Medicare services, 2024
- 7,834
- Medicare patients, 2024
- 4,430
- Part D claims, 2024
- 13
- Industry payments
- $285
- Affiliated sites
- 3
- Practice address
- 14571 Magnolia Street Suite 107, Westminster, CA 92683
- Practice phone
- Call (714) 387-2778
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Magnolia Surgery Center - Westminster
Surgery Center - Medicare-Certified · Westminster, California
Find Dr. Phung's professional email, personal email and mobile number
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Dr. Thanh Gia Phung is a general practice physician in Westminster, California
Dr. Phung practices at Magnolia Surgery Center - Westminster in Westminster, California.
Dr. Phung's NPI, 1952315319, was assigned on July 28, 2006. Dr. Phung holds California license C42348.
- NPI
- 1952315319NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2264421965
- NPI enumeration date
- July 28, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (714) 387-2778
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 79
- Medical school graduation
- 1973
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thanh Gia Phung practices at Magnolia Surgery Center - Westminster in Westminster, California
Dr. Phung's primary practice is Magnolia Surgery Center - Westminster, at 14571 Magnolia Street Suite 107, Westminster, CA 92683. The practice phone is (714) 387-2778.
- Magnolia Surgery Center - Westminster14571 Magnolia Street Suite 107, Westminster, CA 92683Phone(714) 387-2778
Source: Dmand AI Affiliation Data
Dr. Thanh Gia Phung is affiliated with 3 sites of care and 3 medical groups
Dr. Phung's primary practice is Magnolia Surgery Center - Westminster in Westminster, California. The medical group on file is Magnolia Imaging by Families Together of Orange County. Dmand AI also links Dr. Phung to 2 more medical groups, 1 community health center and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Thanh Gia Phung's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Phung practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Magnolia Surgery Center - Westminster | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Thanh Gia Phung is one of 1,526 general practice physicians in California
General practice is Dr. Phung's primary specialty in the NPI Registry, under taxonomy code 208D00000X. Dr. Phung is licensed in California.
Specialties and state licenses
- General practice, CaliforniaPrimary
General practice physicians near Dr. Phung
Counts of general practice physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Thanh Gia Phung billed Medicare for 7,834 services in 2024
CMS data shows 7,834 Medicare services from Dr. Phung across 65 procedure codes in 2024, for 4,430 Medicare patients. Medicare paid $643,977 for them. Every service was in an office.
Dr. Phung's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 7,4352024: 7,5582%
- Tests and treatments
- 2023: 2512024: 2404%
- Other services
- 2023: 02024: 21
- Surgery
- 2023: 172024: 1512%
Dr. Phung compared with the California median for general practice physicians, 2024
- Dr. Phung
- California median
- Medicare services
- 7,834vs 26229.9 times
- Medicare patients
- 4,430vs 13632.6 times
- Part D claims
- 23vs 19288% below
Medians across 1,114 general practice physicians in California with Dmand AI profiles that report each measure.
Dr. Phung's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Thanh Gia Phung treated 4,430 Medicare patients in 2024, average age 74
CMS counts 4,430 Medicare patients who saw Dr. Phung in 2024. The largest group is 65 to 74, with 2,290 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 97% are also on Medicaid. Their average risk score is 1.28, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Phung's median patient age at 65, with 47% women.
Dr. Phung's Medicare patients by age, 2024
Dr. Phung's Medicare patients by sex, 2024
- Women2,90966%
- Men1,52134%
Chronic conditions among Dr. Phung's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis51%
- Diabetes48%
- Chronic kidney disease33%
- Osteoporosis32%
- Ischemic heart disease25%
- COPD16%
Share of Medicare patients with each condition. A patient can have several.
Dr. Phung's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women47%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Thanh Gia Phung wrote 13 Medicare Part D claims in 2024
In 2024, Dr. Phung wrote 13 Medicare Part D claims for 12 patients. They cover 2 drugs, with $3,005 in total drug cost.
Dr. Phung's most prescribed drugs by claims, 2017
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Thanh Gia Phung scored 0 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 0 out of 100 for Dr. Phung for performance year 2024, reported individually. Dr. Phung accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Phung's MIPS scores, performance year 2024
- 0of 100Final score
- 0of 100Quality
- 0of 100Improvement Activities
- 0of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Thanh Gia Phung received $285 in industry payments from 2016 to 2018
CMS Open Payments shows 4 general payments to Dr. Phung from 3 drug and device companies from 2016 to 2018. Food and beverage make up the largest share, 100% of the total. Abbott Laboratories paid the most, $129.
General payments to Dr. Phung by program year, 2016 to 2018
Companies that paid Dr. Phung the most, 2016 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Thanh Gia Phung's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Thanh Gia Phung
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Thanh Gia Phung's NPI number?
Dr. Thanh Gia Phung's NPI number is 1952315319. It was assigned on July 28, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Thanh Gia Phung?
Dr. Thanh Gia Phung is a general practice physician in Westminster, California. The primary specialty in the NPI Registry is General Practice Physician (taxonomy code 208D00000X).
Where does Dr. Thanh Gia Phung practice?
Dr. Phung practices at 14571 Magnolia Street Suite 107, Westminster, CA 92683. Dr. Phung's primary practice is Magnolia Surgery Center - Westminster in Westminster, California. Dmand AI also links Dr. Phung to 2 medical groups, 1 community health center and 1 group practice or clinic.
What is Dr. Thanh Gia Phung's office phone number?
The practice phone on file for Dr. Phung is (714) 387-2778.
What is Dr. Thanh Gia Phung's medical license number?
Dr. Phung holds California license C42348.
What medical group is Dr. Thanh Gia Phung part of?
Dr. Phung is linked to Magnolia Imaging by Families Together of Orange County. Dmand AI links Dr. Phung to 2 more medical groups.
Does Dr. Thanh Gia Phung accept Medicare?
Yes. CMS data shows Dr. Phung billed Medicare for 7,834 services in 2024, and Dr. Phung accepts Medicare assignment.
What is Dr. Thanh Gia Phung's MIPS score?
Dr. Phung's MIPS final score for performance year 2024 is 0 out of 100, reported individually.
How many Medicare patients does Dr. Thanh Gia Phung see?
CMS counts 4,430 Medicare patients who saw Dr. Phung in 2024, with an average age of 74.
What services does Dr. Thanh Gia Phung bill to Medicare?
In 2024, Dr. Phung's most billed Medicare services were diagnostic imaging (71046), radiation oncology (77078) and radiation oncology (77067).
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What drugs does Dr. Thanh Gia Phung prescribe most?
In 2017 Medicare Part D data, Dr. Phung's most prescribed drugs by claims were Namenda XR and Memantine HCl.
Has Dr. Thanh Gia Phung received payments from drug or device companies?
CMS Open Payments shows $285 in general payments to Dr. Phung from 3 companies from 2016 to 2018. The largest total came from Abbott Laboratories.
How long has Dr. Thanh Gia Phung been practicing?
Dr. Phung graduated from medical school in 1973, 53 years ago.
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