Dr. Diana W. Zhao, MD
- Medicare services, 2022
- 58
- Part D claims, 2024
- 497
- Hospital affiliations
- 1
- Industry payments
- $2,026
- Medical groups
- 4
- Practice address
- One Hoag Drive, Newport Beach, CA 92663
- Practice phone
- Call (949) 764-4624
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Zhao's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Diana W. Zhao is an internist in Newport Beach, California
Dr. Zhao practices at Hoag Hospital Newport Beach in Newport Beach, California, part of Hoag Memorial Hospital Presbyterian.
Dr. Zhao's NPI, 1295199768, was assigned on April 11, 2016. Dr. Zhao graduated from Medical College Of Wisconsin in 2016. Dr. Zhao's California license number on file is A150485.
- NPI
- 1295199768NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0648503748
- NPI enumeration date
- April 11, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (949) 764-4624
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Diana W. Zhao practices at 2 locations in Newport Beach, California
Dr. Zhao's primary practice is Hoag Hospital Newport Beach, at One Hoag Drive, Newport Beach, CA 92663 in Orange County. The practice phone is (949) 764-4624. Dr. Zhao also practices at Hoag Hospital Newport Beach, 1 Hoag Dr, Newport Beach, CA 92663.
- Hoag Hospital Newport BeachPrimaryOne Hoag Drive, Newport Beach, CA 92663 · Orange CountyPhone(949) 764-4624
- Hoag Hospital Newport Beach1 Hoag Dr, Newport Beach, CA 92663 · Orange CountyPhone(949) 764-4624
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Diana W. Zhao is affiliated with 2 sites of care and 4 medical groups
Dr. Zhao's primary practice is Hoag Hospital Newport Beach in Newport Beach, California, part of Hoag Memorial Hospital Presbyterian. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Zhao to 3 more medical groups 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. Diana W. Zhao's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zhao practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Hoag Hospital Newport Beach | Available with a free account |
| +1 more site and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Hoag Memorial Hospital Presbyterian and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Diana W. Zhao is one of 16,751 internists in California
Internal medicine is Dr. Zhao's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Zhao is board certified in endocrinology, diabetes and metabolism by the American Board of Internal Medicine. Dr. Zhao has a license on file in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Zhao
Counts of internists 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. Diana W. Zhao billed Medicare for 58 services in 2022
CMS data shows 58 Medicare services from Dr. Zhao across 1 procedure code in 2022, all of them office visits. Medicare paid $3,927 for them. Every service was in an office.
Dr. Zhao's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 1692022: 5866%
- Lab and pathology
- 2021: 112022: 0100%
Dr. Zhao compared with the California median for internists, 2022
- Dr. Zhao
- California median
- Medicare services
- 58vs 36184% below
- Part D claims
- 316vs 42125% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Zhao's most billed Medicare procedure codes, 2022
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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Zhao and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Diana W. Zhao's patients have a median age of 67
Across all payers, Dmand AI patient panel data puts Dr. Zhao's median patient age at 67, with 69% women.
Dr. Zhao's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women69%
- Men30%
Source: Dmand AI Patient Panel Data
Dr. Diana W. Zhao wrote 497 Medicare Part D claims in 2024
In 2024, Dr. Zhao wrote 497 Medicare Part D claims for 130 patients. 43% of them were for generic drugs. CMS names the drug for 316 of them, across 12 drugs with 11 or more claims each, at $197,188 in total drug cost. In 2023, CMS named 242 claims across 12 drugs.
Dr. Zhao's Part D claims by kind of drug, 2024
- Generic212 claims43%
- Brand-name252 claims51%
- Other33 claims7%
Dr. Zhao'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2422024: 31631%
Drugs named by CMS: 12 in 2024, 12 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. Diana W. Zhao takes part in Medicare
Dr. Zhao 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. Diana W. Zhao received $2,026 in industry payments from 2018 to 2025
CMS Open Payments shows 59 general payments to Dr. Zhao from 17 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $586.
General payments to Dr. Zhao by program year, 2018 to 2025
Companies that paid Dr. Zhao the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Diana W. Zhao graduated from Medical College Of Wisconsin
Dr. Zhao graduated from Medical College Of Wisconsin in 2016.
- Medical school
- Board certified in endocrinology, diabetes and metabolism
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Diana W. Zhao accepts plans from 4 insurance carriers
Dr. Zhao is in network with 4 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
Plan types Dr. Zhao accepts, by number of carriers
- Medicare4
- PPO4
- HMO2
- POS2
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Diana W. Zhao'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice 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 Data |
| 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Diana W. Zhao
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. Diana W. Zhao's NPI number?
Dr. Diana W. Zhao's NPI number is 1295199768. It was assigned on April 11, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Diana W. Zhao?
Dr. Diana W. Zhao is an internist in Newport Beach, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Diana W. Zhao practice?
Dr. Zhao practices at One Hoag Drive, Newport Beach, CA 92663. Dr. Zhao also practices at 1 Hoag Dr, Newport Beach, CA 92663. Dr. Zhao's primary practice is Hoag Hospital Newport Beach in Newport Beach, California, part of Hoag Memorial Hospital Presbyterian. Dmand AI also links Dr. Zhao to 3 medical groups and 1 group practice or clinic.
What is Dr. Diana W. Zhao's office phone number?
The practice phone on file for Dr. Zhao is (949) 764-4624.
What is Dr. Diana W. Zhao's medical license number?
Dr. Zhao's California license number on file is A150485.
Which hospitals is Dr. Diana W. Zhao affiliated with?
Dr. Zhao practices at Hoag Hospital Newport Beach in Newport Beach, California.
What medical group is Dr. Diana W. Zhao part of?
Dr. Zhao is linked to Southern California Permanente Medical Group. Dmand AI links Dr. Zhao to 3 more medical groups.
Does Dr. Diana W. Zhao accept Medicare?
Yes. CMS data shows Dr. Zhao billed Medicare for 58 services in 2022, and Dr. Zhao accepts Medicare assignment.
Is Dr. Diana W. Zhao board certified?
Yes. Dr. Zhao is board certified in endocrinology, diabetes and metabolism by the American Board of Internal Medicine.
What services does Dr. Diana W. Zhao bill to Medicare?
In 2022, Dr. Zhao's most billed Medicare services were office visit, established patient (99213).
Show 5 more questionsShow fewer questions
Where did Dr. Diana W. Zhao go to medical school?
Dr. Zhao graduated from Medical College Of Wisconsin in 2016.
What drugs does Dr. Diana W. Zhao prescribe most?
In 2024 Medicare Part D data, Dr. Zhao's most prescribed drugs by claims were Metformin HCl ER, Jardiance and Ozempic.
Has Dr. Diana W. Zhao received payments from drug or device companies?
CMS Open Payments shows $2,026 in general payments to Dr. Zhao from 17 companies from 2018 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. Diana W. Zhao been practicing?
Dr. Zhao graduated from medical school in 2016, 10 years ago.
What insurance does Dr. Diana W. Zhao accept?
Dr. Zhao is in network with 4 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
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