Calvin Nguyen
- Part D claims, 2024
- 105
- Hospital affiliations
- 1
- Industry payments
- $116
- Medical groups
- 2
- State license
- 1
- Practice address
- 9961 Sierra Ave, Fontana, CA 92335
- Practice phone
- Call (909) 427-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Calvin 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.
Calvin Nguyen is a physician assistant in Fontana, California
Calvin Nguyen practices at Fontana Medical Center in Fontana, California, part of Kaiser Permanente.
Calvin Nguyen's NPI, 1417432535, was assigned on September 25, 2018. Calvin Nguyen holds California license 56004.
- NPI
- 1417432535NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3678816865
- NPI enumeration date
- September 25, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (909) 427-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- 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)
Calvin Nguyen practices at Fontana Medical Center in Fontana, California
Calvin Nguyen's primary practice is Fontana Medical Center, at 9961 Sierra Ave, Fontana, CA 92335 in San Bernardino County. The practice phone is (909) 427-5000.
- Fontana Medical Center9961 Sierra Ave, Fontana, CA 92335 · San Bernardino CountyPhone(909) 427-5000
Source: Dmand AI Affiliation Data
Calvin Nguyen is affiliated with 3 sites of care and 2 medical groups
Calvin Nguyen's primary practice is Fontana Medical Center in Fontana, California, part of Kaiser Permanente. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Calvin Nguyen to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Calvin Nguyen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Calvin Nguyen practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Fontana Medical Center | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Calvin Nguyen is one of 11,482 physician assistants in California
Physician assistant is Calvin Nguyen's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Calvin Nguyen is licensed in California.
Specialties and state licenses
- Physician assistant, CaliforniaPrimary
Physician assistants near Calvin 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
Calvin Nguyen's patients have a median age of 51
Across all payers, Dmand AI patient panel data puts Calvin Nguyen's median patient age at 51, with 62% women.
Calvin 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 51
Patient panel by sex, all payers
- Women62%
- Men38%
Source: Dmand AI Patient Panel Data
Calvin Nguyen wrote 105 Medicare Part D claims in 2024
In 2024, Calvin Nguyen wrote 105 Medicare Part D claims for 56 patients. 93% of them were for generic drugs.
Calvin Nguyen's Part D claims by kind of drug, 2024
- Generic98 claims93%
- Brand-name and other7 claims7%
Drug classes CMS tracks in Calvin Nguyen's Part D claims, 2024
- Opioids27%28 of 105 claims
- Antibiotics28%29 of 105 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Calvin Nguyen takes part in Medicare
Calvin Nguyen 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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Calvin Nguyen received $116 in industry payments in 2025
CMS Open Payments shows 1 general payment to Calvin Nguyen from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Medtronic, Inc. paid the most, $116.
Companies that paid Calvin Nguyen the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Calvin 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 DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | 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 Calvin 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 Calvin Nguyen's NPI number?
Calvin Nguyen's NPI number is 1417432535. It was assigned on September 25, 2018, and it is active in the NPI Registry.
What does Calvin Nguyen specialize in?
Calvin Nguyen is a physician assistant in Fontana, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Calvin Nguyen practice?
Calvin Nguyen practices at 9961 Sierra Ave, Fontana, CA 92335. Calvin Nguyen's primary practice is Fontana Medical Center in Fontana, California, part of Kaiser Permanente. Dmand AI also links Calvin Nguyen to 2 group practices and clinics and 1 medical group.
What is Calvin Nguyen's office phone number?
The practice phone on file for Calvin Nguyen is (909) 427-5000.
What is Calvin Nguyen's medical license number?
Calvin Nguyen holds California license 56004.
Which hospitals is Calvin Nguyen affiliated with?
Calvin Nguyen practices at Fontana Medical Center in Fontana, California.
What medical group is Calvin Nguyen part of?
Calvin Nguyen is linked to Southern California Permanente Medical Group. Dmand AI links Calvin Nguyen to 1 more medical group.
Does Calvin Nguyen accept Medicare?
Yes. CMS lists Calvin Nguyen as accepting Medicare assignment.
Has Calvin Nguyen received payments from drug or device companies?
CMS Open Payments shows $116 in general payments to Calvin Nguyen from 1 company from 2025 to 2025. The largest total came from Medtronic, Inc.
How long has Calvin Nguyen been practicing?
Calvin Nguyen graduated from medical school in 2018, 8 years ago.
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