Tiffany Quyen Nguyen, PA-C
- Medicare services, 2024
- 379
- Medicare patients, 2024
- 186
- Part D claims, 2024
- 333
- MIPS score, 2024
- 90
- Hospital affiliations
- 1
- Practice address
- 700 N Tustin Ave, Santa Ana, CA 92705-3602
- Practice phone
- Call (714) 245-1444
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Cardiology Specialists Of Orange County
Primary care practice · Santa Ana, California
Find Tiffany Quyen Nguyen'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.
Tiffany Quyen Nguyen is a physician assistant in Santa Ana, California
Tiffany Quyen Nguyen practices at Cardiology Specialists Of Orange County in Santa Ana, California.
Tiffany Quyen Nguyen's NPI, 1356804587, was assigned on April 14, 2019.
- NPI
- 1356804587NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9931593746
- NPI enumeration date
- April 14, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (714) 245-1444
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Tiffany Quyen Nguyen practices at Cardiology Specialists of Orange County in Santa Ana, California
Tiffany Quyen Nguyen's primary practice is Cardiology Specialists of Orange County, at 700 N Tustin Ave, Santa Ana, CA 92705-3602. The practice phone is (714) 245-1444.
- Cardiology Specialists of Orange County700 N Tustin Ave, Santa Ana, CA 92705-3602Phone(714) 245-1444
Source: Dmand AI Affiliation Data
Tiffany Quyen Nguyen is affiliated with 2 sites of care and 1 medical group
Tiffany Quyen Nguyen's primary practice is Cardiology Specialists Of Orange County in Santa Ana, California. Tiffany Quyen Nguyen is also affiliated with Hoag Hospital Newport Beach. The medical group on file is Cardiology Specialists of Orange County.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Tiffany Quyen Nguyen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Tiffany Quyen Nguyen practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Cardiology Specialists Of Orange County | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Tiffany Quyen Nguyen is one of 11,482 physician assistants in California
Physician assistant is Tiffany Quyen Nguyen's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Tiffany Quyen Nguyen has a license on file in California.
Specialties and state licenses
- Physician assistant, California
Physician assistants near Tiffany Quyen Nguyen
Counts of physician assistants 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
Tiffany Quyen Nguyen billed Medicare for 379 services in 2024
CMS data shows 379 Medicare services from Tiffany Quyen Nguyen across 3 procedure codes in 2024, for 186 Medicare patients. Medicare paid $17,684 for them. Every service was in an office.
Tiffany Quyen Nguyen's Medicare services by type, 2024
- Office and hospital visits255
- Tests and treatments124
Tiffany Quyen Nguyen compared with the California median for physician assistants, 2024
- Tiffany Quyen Nguyen
- California median
- Medicare services
- 379vs 20486% above
- Medicare patients
- 186vs 10577% above
- Part D claims
- 187vs 24323% below
Medians across 7,065 physician assistants in California with Dmand AI profiles that report each measure.
Tiffany Quyen Nguyen'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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Medicare shows one payer. Book a meeting to get commercial claims data for Tiffany Quyen Nguyen and other physician assistants in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Tiffany Quyen Nguyen treated 186 Medicare patients in 2024, average age 76
CMS counts 186 Medicare patients who saw Tiffany Quyen Nguyen in 2024. The largest group is 65 to 74, with 81 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 13% are also on Medicaid. Their average risk score is 1.52, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Tiffany Quyen Nguyen's median patient age at 70, with 55% women.
Tiffany Quyen Nguyen's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Tiffany Quyen Nguyen's Medicare patients by sex, 2024
- Women10758%
- Men7942%
Chronic conditions among Tiffany Quyen Nguyen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis55%
- Anxiety33%
- Ischemic heart disease32%
- Atrial fibrillation30%
- Diabetes26%
- Chronic kidney disease25%
Share of Medicare patients with each condition. A patient can have several.
Tiffany Quyen Nguyen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women55%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Tiffany Quyen Nguyen wrote 333 Medicare Part D claims in 2024
In 2024, Tiffany Quyen Nguyen wrote 333 Medicare Part D claims for 110 patients. 88% of them were for generic drugs. CMS names the drug for 187 of them, across 8 drugs with 11 or more claims each, at $1,239 in total drug cost.
Tiffany Quyen Nguyen's Part D claims by kind of drug, 2024
- Generic292 claims88%
- Brand-name41 claims12%
Tiffany Quyen Nguyen'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.
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
Tiffany Quyen Nguyen scored 90 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 90 out of 100 for Tiffany Quyen Nguyen for performance year 2024, reported as part of a group. Tiffany Quyen Nguyen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Tiffany Quyen Nguyen as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Tiffany Quyen Nguyen's MIPS scores, performance year 2024
- 90of 100Final score
- 84.1of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 75of 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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Tiffany Quyen Nguyen received $1,090 in industry payments from 2024 to 2025
CMS Open Payments shows 55 general payments to Tiffany Quyen Nguyen from 12 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Novartis Pharmaceuticals Corporation paid the most, $417.
General payments to Tiffany Quyen Nguyen by program year, 2024 to 2025
Companies that paid Tiffany Quyen Nguyen the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Tiffany Quyen Nguyen'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)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 Tiffany Quyen Nguyen
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Tiffany Quyen Nguyen's NPI number?
Tiffany Quyen Nguyen's NPI number is 1356804587. It was assigned on April 14, 2019, and it is active in the NPI Registry.
What does Tiffany Quyen Nguyen specialize in?
Tiffany Quyen Nguyen is a physician assistant in Santa Ana, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Tiffany Quyen Nguyen practice?
Tiffany Quyen Nguyen practices at 700 N Tustin Ave, Santa Ana, CA 92705-3602. Tiffany Quyen Nguyen's primary practice is Cardiology Specialists Of Orange County in Santa Ana, California.
What is Tiffany Quyen Nguyen's office phone number?
The practice phone on file for Tiffany Quyen Nguyen is (714) 245-1444.
Which hospitals is Tiffany Quyen Nguyen affiliated with?
Tiffany Quyen Nguyen is affiliated with Hoag Hospital Newport Beach.
What medical group is Tiffany Quyen Nguyen part of?
Tiffany Quyen Nguyen is linked to Cardiology Specialists of Orange County.
Does Tiffany Quyen Nguyen accept Medicare?
Yes. CMS data shows Tiffany Quyen Nguyen billed Medicare for 379 services in 2024, and Tiffany Quyen Nguyen accepts Medicare assignment.
Does Tiffany Quyen Nguyen offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Tiffany Quyen Nguyen as offering telehealth services.
What is Tiffany Quyen Nguyen's MIPS score?
Tiffany Quyen Nguyen's MIPS final score for performance year 2024 is 90 out of 100, reported as part of a group.
How many Medicare patients does Tiffany Quyen Nguyen see?
CMS counts 186 Medicare patients who saw Tiffany Quyen Nguyen in 2024, with an average age of 76.
Show 4 more questionsShow fewer questions
What services does Tiffany Quyen Nguyen bill to Medicare?
In 2024, Tiffany Quyen Nguyen's most billed Medicare services were office visit, established patient (99213), heart test or procedure (93000) and office visit, new patient (99203).
What drugs does Tiffany Quyen Nguyen prescribe most?
In 2024 Medicare Part D data, Tiffany Quyen Nguyen's most prescribed drugs by claims were Metoprolol Succinate, Atorvastatin Calcium and Amlodipine Besylate.
Has Tiffany Quyen Nguyen received payments from drug or device companies?
CMS Open Payments shows $1,090 in general payments to Tiffany Quyen Nguyen from 12 companies from 2024 to 2025. The largest total came from Novartis Pharmaceuticals Corporation.
How long has Tiffany Quyen Nguyen been practicing?
Tiffany Quyen Nguyen graduated from medical school in 2018, 8 years ago.
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