Dr. Dai Dao Nghiem, MD
- Medicare services, 2024
- 143
- Medicare patients, 2024
- 101
- Part D claims, 2024
- 2,021
- Industry payments
- $8,209
- Affiliated sites
- 2
- Practice address
- 9191 Westminster Ave Ste 211, Garden Grove, CA 92844
- Practice phone
- Call (714) 899-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Southern California Vein & Wound Care Center
Surgery Center - Not Medicare-Certified · Garden Grove, California
Find Dr. Nghiem'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. Dai Dao Nghiem is a transplant surgery physician in Garden Grove, California
Dr. Nghiem practices at Southern California Vein & Wound Care Center in Garden Grove, California.
Dr. Nghiem's NPI, 1285635672, was assigned on August 9, 2005. Dr. Nghiem holds California license C52961.
- NPI
- 1285635672NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6204012487
- NPI enumeration date
- August 9, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (714) 899-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 83
- Medical school graduation
- 1969
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Dai Dao Nghiem practices at Southern California Vein & Wound Care Center in Garden Grove, California
Dr. Nghiem's primary practice is Southern California Vein & Wound Care Center, at 9191 Westminster Ave Ste 211, Garden Grove, CA 92844. The practice phone is (714) 899-2000.
- Southern California Vein & Wound Care Center9191 Westminster Ave Ste 211, Garden Grove, CA 92844Phone(714) 899-2000
Source: Dmand AI Affiliation Data
Dr. Dai Dao Nghiem is affiliated with 2 sites of care and 1 medical group
Dr. Nghiem's primary practice is Southern California Vein & Wound Care Center in Garden Grove, California. The medical group on file is Dao Medical Group. Dmand AI also links Dr. Nghiem to 1 more group practice or clinic, named with a free account. Dr. Nghiem's employer is on file too: a surgery center (asc).
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Dai Dao Nghiem's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nghiem practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Southern California Vein & Wound Care Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Dai Dao Nghiem is one of 69 transplant surgery physicians in California
Transplant surgery is Dr. Nghiem's primary specialty in the NPI Registry, under taxonomy code 204F00000X. Dmand AI has Dr. Nghiem's licenses on file in 2 states: California and Pennsylvania.
Specialties and state licenses
- Transplant surgery, CaliforniaPrimary
- Surgery, Pennsylvania
Transplant surgery physicians near Dr. Nghiem
Counts of transplant surgery 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. Dai Dao Nghiem billed Medicare for 143 services in 2024
CMS data shows 143 Medicare services from Dr. Nghiem across 2 procedure codes in 2024, all of them office visits, for 101 Medicare patients. Medicare paid $10,608 for them. Every service was in an office.
Dr. Nghiem's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 982024: 14346%
Dr. Nghiem compared with the California median for transplant surgery physicians, 2024
- Dr. Nghiem
- California median
- Medicare services
- 143vs 1589% below
- Medicare patients
- 101vs 7044% above
- Part D claims
- 1,547vs 4336.0 times
Medians across 64 transplant surgery physicians in California with Dmand AI profiles that report each measure.
Dr. Nghiem'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.
Need commercial claims for Dr. Nghiem?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Nghiem and other transplant surgery physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Dai Dao Nghiem treated 101 Medicare patients in 2024, average age 74
CMS counts 101 Medicare patients who saw Dr. Nghiem in 2024. The largest group is 65 to 74, with 53 patients. 75% of them have high cholesterol, and 73% have high blood pressure. Their average risk score is 1.04, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Nghiem's median patient age at 59, with 46% women.
Dr. Nghiem's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Nghiem's Medicare patients by sex, 2024
- Women5150%
- Men5050%
Chronic conditions among Dr. Nghiem's Medicare patients, 2024
- High cholesterol75%
- High blood pressure73%
- Arthritis51%
- Diabetes43%
- Osteoporosis42%
- Ischemic heart disease26%
- Chronic kidney disease20%
- COPD15%
Share of Medicare patients with each condition. A patient can have several.
Dr. Nghiem's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women46%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Dai Dao Nghiem wrote 2,021 Medicare Part D claims in 2024
In 2024, Dr. Nghiem wrote 2,021 Medicare Part D claims for 339 patients. 81% of them were for generic drugs. CMS names the drug for 1,547 of them, across 50 drugs with 11 or more claims each, at $145,867 in total drug cost. In 2023, CMS named 1,313 claims across 46 drugs.
Dr. Nghiem's Part D claims by kind of drug, 2024
- Generic1,631 claims81%
- Brand-name360 claims18%
- Other30 claims1%
Dr. Nghiem'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. Nghiem's Part D claims, 2024
- Antibiotics3%68 of 2,021 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: 1,3132024: 1,54718%
Drugs named by CMS: 50 in 2024, 46 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. Dai Dao Nghiem takes part in Medicare
Dr. Nghiem 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. Dai Dao Nghiem received $8,209 in industry payments from 2016 to 2025
CMS Open Payments shows 129 general payments to Dr. Nghiem from 38 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Gilead Sciences, Inc. paid the most, $869.
General payments to Dr. Nghiem by program year, 2016 to 2025
General payments to Dr. Nghiem by kind, 2016 to 2025
- Food and beverage$8,205100%
- Travel and lodging$40%
Companies that paid Dr. Nghiem the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Dai Dao Nghiem'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 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) |
| 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. Dai Dao Nghiem
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. Dai Dao Nghiem's NPI number?
Dr. Dai Dao Nghiem's NPI number is 1285635672. It was assigned on August 9, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Dai Dao Nghiem?
Dr. Dai Dao Nghiem is a transplant surgery physician in Garden Grove, California. The primary specialty in the NPI Registry is Transplant Surgery Physician (taxonomy code 204F00000X).
Where does Dr. Dai Dao Nghiem practice?
Dr. Nghiem practices at 9191 Westminster Ave Ste 211, Garden Grove, CA 92844. Dr. Nghiem's primary practice is Southern California Vein & Wound Care Center in Garden Grove, California. Dmand AI also links Dr. Nghiem to 1 group practice or clinic.
What is Dr. Dai Dao Nghiem's office phone number?
The practice phone on file for Dr. Nghiem is (714) 899-2000.
What is Dr. Dai Dao Nghiem's medical license number?
Dr. Nghiem holds California license C52961, one of the licenses on file in 2 states.
Which states has Dr. Dai Dao Nghiem been licensed in?
Dmand AI has state licenses on file for Dr. Nghiem in California and Pennsylvania.
What medical group is Dr. Dai Dao Nghiem part of?
Dr. Nghiem is linked to Dao Medical Group.
Does Dr. Dai Dao Nghiem accept Medicare?
Yes. CMS data shows Dr. Nghiem billed Medicare for 143 services in 2024, and Dr. Nghiem accepts Medicare assignment.
How many Medicare patients does Dr. Dai Dao Nghiem see?
CMS counts 101 Medicare patients who saw Dr. Nghiem in 2024, with an average age of 74.
What services does Dr. Dai Dao Nghiem bill to Medicare?
In 2024, Dr. Nghiem's most billed Medicare services were office visit, established patient (99213) and office visit, established patient (99214).
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What drugs does Dr. Dai Dao Nghiem prescribe most?
In 2024 Medicare Part D data, Dr. Nghiem's most prescribed drugs by claims were Amlodipine Besylate, Atorvastatin Calcium and Metformin HCl.
Has Dr. Dai Dao Nghiem received payments from drug or device companies?
CMS Open Payments shows $8,209 in general payments to Dr. Nghiem from 38 companies from 2016 to 2025. The largest total came from Gilead Sciences, Inc.
How long has Dr. Dai Dao Nghiem been practicing?
Dr. Nghiem graduated from medical school in 1969, 57 years ago.
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