Dr. Thao P. Phung, MD
- Medicare services, 2024
- 992
- Medicare patients, 2024
- 169
- Part D claims, 2024
- 1,337
- Hospital affiliations
- 2
- State license
- 1
- Practice address
- 9920 Talbert Avenue, Fountain Valley, CA 92708
- Practice phone
- Call (714) 378-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Thao P. Phung is a hospitalist in Fountain Valley, California
Dr. Phung practices at Orange Coast Medical Center in Fountain Valley, California, part of MemorialCare Health System.
Dr. Phung's NPI, 1699909622, was assigned on May 5, 2009. Dr. Phung graduated from Georgetown University School of Medicine in 2009. Dr. Phung holds California license A125932.
- NPI
- 1699909622NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2567742109
- NPI enumeration date
- May 5, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (714) 378-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thao P. Phung practices at Orange Coast Medical Center in Fountain Valley, California
Dr. Phung's primary practice is Orange Coast Medical Center, at 9920 Talbert Avenue, Fountain Valley, CA 92708 in Orange County. The practice phone is (714) 378-7000.
- Orange Coast Medical Center9920 Talbert Avenue, Fountain Valley, CA 92708 · Orange CountyPhone(714) 378-7000
Source: Dmand AI Affiliation Data
Dr. Thao P. Phung is affiliated with 8 sites of care
Dr. Phung's primary practice is Orange Coast Medical Center in Fountain Valley, California, part of MemorialCare Health System. Dr. Phung is also affiliated with UCI Health - Orange. Dmand AI also links Dr. Phung to 4 more skilled nursing facilities, 1 physician office and 1 home health agency, 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. Thao P. Phung's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Phung practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Orange Coast Medical Center | Available with a free account |
| +7 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Thao P. Phung is one of 3,186 hospitalists in California
Hospitalist is Dr. Phung's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Phung is licensed in California.
Specialties and state licenses
- Hospitalist, CaliforniaPrimary
Hospitalists near Dr. Phung
Counts of hospitalists 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. Thao P. Phung billed Medicare for 992 services in 2024
CMS data shows 992 Medicare services from Dr. Phung across 7 procedure codes in 2024, for 169 Medicare patients. Medicare paid $111,732 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Phung's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 8362024: 99219%
Dr. Phung compared with the California median for hospitalists, 2024
- Dr. Phung
- California median
- Medicare services
- 992vs 4302.3 times
- Medicare patients
- 169vs 20116% below
- Part D claims
- 984vs 6914.3 times
Medians across 2,991 hospitalists 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. Thao P. Phung treated 169 Medicare patients in 2024, average age 78
CMS counts 169 Medicare patients who saw Dr. Phung in 2024. The largest group is 85 and over, with 56 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 2.49, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Phung's median patient age at 66, with 51% women.
Dr. Phung's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Phung's Medicare patients by sex, 2024
- Women9355%
- Men7645%
Chronic conditions among Dr. Phung's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease62%
- Diabetes62%
- Arthritis56%
- Ischemic heart disease46%
- Heart failure42%
- Atrial fibrillation36%
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 66
Patient panel by sex, all payers
- Women51%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Thao P. Phung wrote 1,337 Medicare Part D claims in 2024
In 2024, Dr. Phung wrote 1,337 Medicare Part D claims for 108 patients. 85% of them were for generic drugs. CMS names the drug for 984 of them, across 39 drugs with 11 or more claims each, at $45,761 in total drug cost. In 2023, CMS named 1,620 claims across 50 drugs.
Dr. Phung's Part D claims by kind of drug, 2024
- Generic1,132 claims85%
- Brand-name205 claims15%
Dr. Phung's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Phung's Part D claims, 2024
- Opioids1%13 of 1,337 claims
- Antibiotics4%60 of 1,337 claims
- Antipsychotics, patients 65 and over1%18 of 1,337 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,6202024: 98439%
Drugs named by CMS: 39 in 2024, 50 in 2023.
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
How Dr. Thao P. Phung takes part in Medicare
Dr. Phung accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Thao P. Phung graduated from Georgetown University School of Medicine
Dr. Phung graduated from Georgetown University School of Medicine in 2009.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Thao P. 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) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Thao P. 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. Thao P. Phung's NPI number?
Dr. Thao P. Phung's NPI number is 1699909622. It was assigned on May 5, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Thao P. Phung?
Dr. Thao P. Phung is a hospitalist in Fountain Valley, California. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Thao P. Phung practice?
Dr. Phung practices at 9920 Talbert Avenue, Fountain Valley, CA 92708. Dr. Phung's primary practice is Orange Coast Medical Center in Fountain Valley, California, part of MemorialCare Health System. Dmand AI also links Dr. Phung to 4 skilled nursing facilities, 1 physician office and 1 home health agency.
What is Dr. Thao P. Phung's office phone number?
The practice phone on file for Dr. Phung is (714) 378-7000.
What is Dr. Thao P. Phung's medical license number?
Dr. Phung holds California license A125932.
Which hospitals is Dr. Thao P. Phung affiliated with?
Dr. Phung practices at Orange Coast Medical Center in Fountain Valley, California. Dr. Phung is also affiliated with UCI Health - Orange.
Does Dr. Thao P. Phung accept Medicare?
Yes. CMS data shows Dr. Phung billed Medicare for 992 services in 2024, and Dr. Phung accepts Medicare assignment.
How many Medicare patients does Dr. Thao P. Phung see?
CMS counts 169 Medicare patients who saw Dr. Phung in 2024, with an average age of 78.
What services does Dr. Thao P. Phung bill to Medicare?
In 2024, Dr. Phung's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99223) and hospital inpatient care (99239).
Where did Dr. Thao P. Phung go to medical school?
Dr. Phung graduated from Georgetown University School of Medicine in 2009.
What drugs does Dr. Thao P. Phung prescribe most?
In 2024 Medicare Part D data, Dr. Phung's most prescribed drugs by claims were Atorvastatin Calcium, Tamsulosin HCl and Amlodipine Besylate.
How long has Dr. Thao P. Phung been practicing?
Dr. Phung graduated from medical school in 2009, 17 years ago.
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