Dr. Justine Nghiem, MD
- Medicare services, 2024
- 410
- Medicare patients, 2024
- 85
- Part D claims, 2024
- 2,565
- Industry payments
- $1,420
- Affiliated sites
- 1
- Practice address
- 201 9th Street, Marina, CA 93933
- Practice phone
- Call (831) 884-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Major General William H. Gourley VA-DoD Outpatient Clinic
Outpatient Addiction Treatment · Marina, 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. Justine Nghiem is an internist in Marina, California
Dr. Nghiem practices at Major General William H. Gourley VA-DoD Outpatient Clinic in Marina, California.
Dr. Nghiem's NPI, 1962550491, was assigned on January 8, 2007. Dr. Nghiem graduated from Albany Medical College in 1990. Dr. Nghiem holds California license G87687.
- NPI
- 1962550491NPI Registry (opens in a new tab)
- NPI enumeration date
- January 8, 2007
- NPI status
- Active
- Practice phone
- (831) 884-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Justine Nghiem practices at Major General William H. Gourley VA-DoD Outpatient Clinic in Marina, California
Dr. Nghiem's primary practice is Major General William H. Gourley VA-DoD Outpatient Clinic, at 201 9th Street, Marina, CA 93933. The practice phone is (831) 884-1000.
- Major General William H. Gourley VA-DoD Outpatient Clinic201 9th Street, Marina, CA 93933Phone(831) 884-1000
Source: Dmand AI Affiliation Data
Dr. Justine Nghiem is affiliated with 1 site of care
Dr. Nghiem's primary practice is Major General William H. Gourley VA-DoD Outpatient Clinic in Marina, California.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Justine Nghiem's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nghiem practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Major General William H. Gourley VA-DoD Outpatient Clinic | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Justine Nghiem is one of 16,751 internists in California
Internal medicine is Dr. Nghiem's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Nghiem's licenses on file in 2 states: California and New York.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- New York license
Clinical focus
Dmand AI lists alzheimer's disease, chronic anemia, chronic diabetes, chronic hypertension, chronic kidney disease, coronary artery disease, joint pain and kidney stone disease among the conditions Dr. Nghiem treats.
Internists near Dr. Nghiem
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. Justine Nghiem billed Medicare for 410 services in 2024
CMS data shows 410 Medicare services from Dr. Nghiem across 3 procedure codes in 2024, for 85 Medicare patients. Medicare paid $25,034 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Nghiem's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3612024: 41014%
Dr. Nghiem compared with the California median for internists, 2024
- Dr. Nghiem
- California median
- Medicare services
- 410vs 36114% above
- Medicare patients
- 85vs 15144% below
- Part D claims
- 2,161vs 4215.1 times
Medians across 15,815 internists 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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Nghiem and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Justine Nghiem treated 85 Medicare patients in 2024, average age 82
CMS counts 85 Medicare patients who saw Dr. Nghiem in 2024. The largest group is 85 and over, with 38 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 65% are also on Medicaid. Their average risk score is 2.40, 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. Nghiem's median patient age at 78, with 55% 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
- Women4452%
- Men4148%
Chronic conditions among Dr. Nghiem's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis52%
- Chronic kidney disease52%
- Diabetes52%
- Mood disorders52%
- Depression51%
- Heart failure49%
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 78
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Justine Nghiem wrote 2,565 Medicare Part D claims in 2024
In 2024, Dr. Nghiem wrote 2,565 Medicare Part D claims for 54 patients. 70% of them were for generic drugs. CMS names the drug for 2,161 of them, across 63 drugs with 11 or more claims each, at $127,513 in total drug cost. In 2023, CMS named 1,569 claims across 55 drugs.
Dr. Nghiem's Part D claims by kind of drug, 2024
- Generic1,793 claims70%
- Brand-name and other772 claims30%
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
- Opioids2%50 of 2,565 claims
- Antibiotics2%43 of 2,565 claims
- Antipsychotics, patients 65 and over2%41 of 2,565 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: 1,5692024: 2,16138%
Drugs named by CMS: 63 in 2024, 55 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
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Dr. Justine Nghiem received $1,420 in industry payments from 2016 to 2025
CMS Open Payments shows 26 general payments to Dr. Nghiem from 13 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Boehringer Ingelheim Pharmaceuticals, Inc. paid the most, $536.
General payments to Dr. Nghiem by program year, 2016 to 2025
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
Dr. Justine Nghiem graduated from Albany Medical College
Dr. Nghiem graduated from Albany Medical College in 1990.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Justine Nghiem accepts plans from 4 insurance carriers
Dr. Nghiem is in network with 4 carriers, including Elevance, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
Plan types Dr. Nghiem accepts, by number of carriers
- Medicare4
- PPO4
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Justine 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 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) |
| 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. Justine 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. Justine Nghiem's NPI number?
Dr. Justine Nghiem's NPI number is 1962550491. It was assigned on January 8, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Justine Nghiem?
Dr. Justine Nghiem is an internist in Marina, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Justine Nghiem practice?
Dr. Nghiem practices at 201 9th Street, Marina, CA 93933. Dr. Nghiem's primary practice is Major General William H. Gourley VA-DoD Outpatient Clinic in Marina, California.
What is Dr. Justine Nghiem's office phone number?
The practice phone on file for Dr. Nghiem is (831) 884-1000.
What is Dr. Justine Nghiem's medical license number?
Dr. Nghiem holds California license G87687, one of the licenses on file in 2 states.
Which states has Dr. Justine Nghiem been licensed in?
Dmand AI has state licenses on file for Dr. Nghiem in California (2006 to 2026) and New York (1994 to 2009).
Does Dr. Justine Nghiem accept Medicare?
Yes. CMS data shows Dr. Nghiem billed Medicare for 410 services in 2024.
How many Medicare patients does Dr. Justine Nghiem see?
CMS counts 85 Medicare patients who saw Dr. Nghiem in 2024, with an average age of 82.
What services does Dr. Justine Nghiem bill to Medicare?
In 2024, Dr. Nghiem's most billed Medicare services were nursing facility care (99308), nursing facility care (99309) and nursing facility care (99304).
Where did Dr. Justine Nghiem go to medical school?
Dr. Nghiem graduated from Albany Medical College in 1990.
Show 4 more questionsShow fewer questions
What drugs does Dr. Justine Nghiem prescribe most?
In 2024 Medicare Part D data, Dr. Nghiem's most prescribed drugs by claims were Levothyroxine Sodium, Atorvastatin Calcium and Amlodipine Besylate.
Has Dr. Justine Nghiem received payments from drug or device companies?
CMS Open Payments shows $1,420 in general payments to Dr. Nghiem from 13 companies from 2016 to 2025. The largest total came from Boehringer Ingelheim Pharmaceuticals, Inc.
How long has Dr. Justine Nghiem been practicing?
Dr. Nghiem graduated from medical school in 1990, 36 years ago.
What insurance does Dr. Justine Nghiem accept?
Dr. Nghiem is in network with 4 carriers, including Elevance, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
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