Dr. Diana Nguyen Pham, MD
What this data tells you about Dr. Nguyen Pham
Dr. Diana Nguyen Pham is a family medicine specialist in Fountain Valley, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Nguyen Pham performed 1,646 Medicare services across 898 unique beneficiaries.
Between the years covered by Open Payments, Dr. Nguyen Pham received a total of $15,077 from 13 pharmaceutical and/or device companies across 81 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in family medicine. The majority of payments are for speaking programs and promotional activities, reflecting participation in industry-sponsored events. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Nguyen Pham is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
Medicare Practice Summary
Medicare Utilization ↗Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Ceftriaxone antibiotic injection This code represents the administration of ceftriaxone sodium, an antibiotic medication. The charge is calculated for every 250 mg of the drug administered. |
272 | $0 | $21 |
| Anti-nausea injection (ondansetron/Zofran) | 168 | $0 | $6 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
164 | $96 | $206 |
| Intravenous drug injection A procedure involving the administration of a medication or substance directly into a vein. |
116 | $32 | $76 |
| Normal saline infusion, 500 ml Administration of sterile normal saline solution through an intravenous line. This procedure involves the infusion of a 500 ml unit of the solution. |
116 | $1 | $21 |
| Intravenous infusion, 1 hour or less Administration of medication or fluid directly into a vein for therapeutic, preventive, or diagnostic purposes. The procedure lasts one hour or less. |
115 | $53 | $132 |
| Intravenous injection of additional new drug or substance Administration of an additional new medication or substance directly into a vein. |
97 | $14 | $32 |
| Ketorolac injection, per 15 mg An injection of ketorolac tromethamine, a nonsteroidal anti-inflammatory drug, administered in doses measured per 15 mg. |
80 | $0 | $11 |
| Methylprednisolone injection, up to 125 mg An injection of methylprednisolone sodium succinate, a corticosteroid medication, with a dosage of up to 125 mg. |
72 | $4 | $21 |
| New patient office visit (30-44 min) An initial office visit for a new patient lasting between 30 and 44 minutes. This code is used when the total time spent on the date of the encounter falls within this range. |
40 | $79 | $181 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
34 | $8 | $11 |
| Complete blood count (CBC) with differential An automated laboratory test that measures the levels of red blood cells, white blood cells, and platelets in the blood, including a breakdown of the different types of white blood cells. |
29 | $8 | $16 |
| Comprehensive metabolic blood panel A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers. |
28 | $10 | $56 |
| Free thyroxine (T4) test A blood test that measures the level of free thyroxine, a thyroid hormone, in the bloodstream. |
28 | $9 | $18 |
| Thyroid stimulating hormone (TSH) test A blood test that measures the level of thyroid stimulating hormone to evaluate thyroid function. |
28 | $16 | $34 |
| Lipid panel (cholesterol and triglycerides) A blood test that measures cholesterol and triglyceride levels. |
27 | $13 | $27 |
| Hemoglobin A1c test (diabetes monitoring) A blood test that measures your average blood sugar levels over the past two to three months. |
26 | $10 | $19 |
| Vitamin D level test A blood test to measure the amount of Vitamin D-3 in your body. |
24 | $29 | $59 |
| Vitamin B-12 level test A blood test that measures the amount of vitamin B-12 in your body. |
24 | $15 | $30 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
24 | $132 | $288 |
| Unclassified drug A medication that does not fit into standard HCPCS or CPT classification categories. |
24 | $1 | $26 |
| Amylase enzyme level test A blood test that measures the amount of amylase, an enzyme produced by the pancreas and salivary glands, to help evaluate pancreatic health. |
20 | $6 | $13 |
| Lipase level test A blood test that measures the amount of lipase, a fat-digesting enzyme, in your body. |
20 | $7 | $14 |
| Manual urinalysis with microscopic examination A urine test performed manually without automated equipment. The sample is examined under a microscope to check for abnormalities. |
15 | $4 | $11 |
| Myoglobin level test A blood test that measures the amount of myoglobin, a protein found in muscle tissue, in the body. |
15 | $13 | $26 |
| Troponin blood test A blood test that measures the amount of troponin protein in your body. Troponin is released into the blood when heart muscle is damaged. |
15 | $12 | $25 |
| Cardiac creatine kinase MB level test A blood test that measures the level of the MB fraction of creatine kinase, an enzyme found in heart muscle. This test helps assess potential heart muscle damage. |
14 | $11 | $23 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
11 | $172 | $424 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2024)
All-time payments by company (2018-2024) ›
Associated products mentioned in payments ›
The majority of payments (69%) are for speaking programs and promotional activities, which reflect participation in industry-sponsored educational or marketing events. This is common in family medicine and does not inherently indicate bias, but patients may wish to be aware. Total industry engagement is in the top 2% for family medicine in CA.
Geographic Context
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Nguyen Pham is a mixed practice specialist, with above-average Medicare volume (top 13% in CA), with speaking/promotional industry engagement in the top 2% of CA peers, with 19 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
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All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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