Medicare Enrolled
Dr. Mei-Tsuey Hwang, MD
Nephrology · Fresno, CA
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Hwang from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Hwang
Dr. Mei-Tsuey Hwang is a nephrology specialist in Fresno, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Hwang performed 5,183 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Hwang received a total of $1,926 from 25 pharmaceutical and/or device companies across 100 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Hwang 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.
✓ 19 years of NPI registration
▲ Top 9% volume in CA
$1,926 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗5,183
Medicare services
Top 9% in CA for nephrology
Not available
Unique patients (not deduplicated)
$66
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
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 |
|---|---|---|---|
| Dialysis services for patients 20 or older Dialysis treatment provided to patients aged 20 years or older, involving four or more physician visits per month. |
645 | $277 | $1,092 |
| Hospital follow-up visit, moderate complexity Follow-up hospital visit for an existing patient involving moderate medical decision making. The visit requires at least 35 minutes of time spent on the date of service. |
620 | $63 | $223 |
| Epoetin alfa injection (Procrit) for anemia An injection of epoetin alfa containing 1000 units for use in patients not on end-stage renal disease (ESRD) dialysis. |
530 | $6 | $25 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
405 | $54 | $235 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
279 | $8 | $16 |
| Comprehensive metabolic blood panel A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers. |
223 | $10 | $43 |
| Phosphate level test A blood test that measures the amount of phosphate in your body. Phosphate is a mineral that helps keep bones and teeth strong. |
221 | $5 | $14 |
| Magnesium level test A blood test to measure the amount of magnesium in your body. This helps check for magnesium deficiency or excess. |
220 | $7 | $20 |
| 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. |
194 | $8 | $32 |
| Hospital follow-up visit, high complexity Subsequent hospital inpatient or observation care for an existing patient involving high-level medical decision making, with at least 50 minutes total time on the date of the encounter. |
179 | $95 | $319 |
| Creatinine test (kidney function) A blood test that measures the amount of creatinine to assess kidney function or detect muscle injury. |
178 | $5 | $16 |
| 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. |
154 | $69 | $341 |
| Urine microalbumin test (kidney screening) A laboratory test that measures the amount of microalbumin, a small protein, in a urine sample. This test is used to detect early signs of kidney damage. |
142 | $6 | $17 |
| Hospital follow-up visit, low complexity Follow-up hospital visit for an established patient with straightforward or low-level medical decision making. The visit requires at least 25 minutes of time spent on the day of service. |
139 | $39 | $122 |
| Parathyroid hormone level test A blood test that measures the amount of parathyroid hormone in your body. This hormone helps regulate calcium levels in the blood and bones. |
107 | $40 | $124 |
| Initial hospital admission, high complexity Initial hospital inpatient or observation care for a new patient involving high-level medical decision making, with at least 75 minutes total time on the date of the encounter. |
93 | $138 | $627 |
| Dialysis services for adults, 2-3 visits per month This code covers dialysis services for patients aged 20 or older who have 2 to 3 physician visits per month. |
87 | $224 | $921 |
| Urine total protein level A laboratory test that measures the total amount of protein present in a urine sample. |
68 | $4 | $11 |
| Vitamin D level test A blood test to measure the amount of Vitamin D-3 in your body. |
65 | $29 | $89 |
| Drug injection, under skin or into muscle A procedure involving the administration of a medication or substance via injection into the subcutaneous tissue or muscle. |
59 | $11 | $51 |
| Hemoglobin A1c test (diabetes monitoring) A blood test that measures your average blood sugar levels over the past two to three months. |
57 | $9 | $18 |
| Lipid panel (cholesterol and triglycerides) A blood test that measures cholesterol and triglyceride levels. |
53 | $13 | $40 |
| Iron level test | 52 | $6 | $19 |
| Iron binding capacity test A blood test that measures the amount of iron in the blood and the blood's ability to bind and transport iron. |
52 | $9 | $26 |
| Ferritin level test (iron stores) A blood test that measures the level of ferritin, a protein that stores iron in the body. |
46 | $13 | $41 |
| Vitamin B-12 level test A blood test that measures the amount of vitamin B-12 in your body. |
41 | $15 | $45 |
| Cystatin C level test A blood test that measures the level of cystatin C, a protein produced by cells in the body. This measurement is used to help assess kidney function. |
39 | $18 | $56 |
| Vitamin B-12 injection An injection of vitamin B-12 (cyanocobalamin) with a dose of up to 1000 mcg. |
35 | $1 | $10 |
| Folic acid level test A blood test that measures the amount of folic acid in the serum. |
34 | $14 | $44 |
| Hemodialysis, single evaluation A dialysis procedure to filter waste from the blood, performed with a physician's evaluation. |
28 | $57 | $221 |
| Dialysis procedure with evaluation A dialysis treatment that includes one evaluation. |
26 | $68 | $270 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
23 | $135 | $513 |
| Telephone medical discussion, 21-30 minutes A telephone conversation with a physician lasting between 21 and 30 minutes. This code covers the time spent discussing medical matters over the phone. |
23 | $68 | $341 |
| Monthly dialysis physician visit A monthly doctor's visit for patients aged 20 or older who are receiving dialysis treatment. |
21 | $155 | $633 |
| Automated red blood cell count with calculations A blood test that automatically counts red blood cells and performs additional calculations to assess blood health. |
19 | $5 | $23 |
| Uric acid level test A blood test that measures the level of uric acid in your body. Uric acid is a waste product formed when the body breaks down purines. |
14 | $4 | $19 |
| Complete ultrasound of retroperitoneum An ultrasound examination of the structures located behind the abdominal cavity. |
12 | $84 | $364 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. These counts do not measure clinical quality or years of experience.
Industry Payment Transparency
Open Payments through 2024 ↗$1,926
Total received (2018-2024)
Avg $275/year across 7 years
Top 38% in CA for nephrology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
25
Companies
100
Payment records
Payments are publicly reported; disclosure does not establish legality · Not evidence of wrongdoing · How to interpret →
Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$518
2023
$602
2022
$284
2021
$12
2020
$191
2019
$167
2018
$152
Payments by company (2024)
Amgen Inc.
$174
Travere Therapeutics, Inc.
$84
Bayer Healthcare Pharmaceuticals Inc.
$58
GENZYME CORPORATION
$46
AstraZeneca Pharmaceuticals LP
$44
Aurinia Pharma U.S., Inc.
$41
Otsuka America Pharmaceutical, Inc.
$39
Kyowa Kirin, Inc.
$19
Boehringer Ingelheim Pharmaceuticals, Inc.
$13
Top 3 companies account for 61.0% of 2024 payments
All-time payments by company (2018-2024) ›
Amgen Inc.
$407
Horizon Therapeutics plc
$230
AstraZeneca Pharmaceuticals LP
$174
Otsuka America Pharmaceutical, Inc.
$169
Octapharma USA, Inc.
$150
Travere Therapeutics, Inc.
$104
BAXTER HEALTHCARE
$100
GlaxoSmithKline, LLC.
$68
GENZYME CORPORATION
$66
Kyowa Kirin, Inc.
$59
Bayer Healthcare Pharmaceuticals Inc.
$58
Aurinia Pharma U.S., Inc.
$41
Ultragenyx Pharmaceutical Inc.
$37
Boehringer Ingelheim Pharmaceuticals, Inc.
$36
Calliditas Therapeutics US Inc.
$32
Fresenius USA Marketing, Inc.
$31
Bayer HealthCare Pharmaceuticals Inc.
$27
Shire North American Group Inc
$25
Mallinckrodt Hospital Products Inc.
$20
Amicus Therapeutics, Inc.
$19
Relypsa, Inc.
$17
Novartis Pharmaceuticals Corporation
$16
Allergan, Inc.
$15
OPKO Pharmaceuticals, LLC
$14
Mallinckrodt LLC
$12
Top 3 companies account for 42.1% of all-time payments
Associated products mentioned in payments ›
ACTHAR · AFINITOR · Aranesp · BENLYSTA · CRYSVITA · Crysvita · FABRAZYME · FARXIGA · GALAFOLD · JARDIANCE · JYNARQUE · KRYSTEXXA · Kerendia · LOKELMA · LUPKYNIS · NATPARA (PARATHYROID HORMONE) · OCTAPLAS · Parsabiv · Rayaldee · Renal - Non Product Related · Repatha · TARPEYO · TAVNEOS · TEFLARO · Velphoro · Veltassa
Should you be concerned? Industry payments are disclosed through CMS Open Payments. Disclosure alone does not establish their purpose, legality, or effect on care. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Geographic Context
Nephrologists in nearby ZIP areas
33
County median income
$71,434
Nearest hospital to ZIP centroid (approximate)
SAINT AGNES MEDICAL CENTER
0.0 mi
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not included | 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. Hwang is a mixed practice specialist, with above-average Medicare volume (top 9% in CA), 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
Is Dr. Hwang experienced with dialysis services for patients 20 or older?
Based on Medicare claims data, Dr. Hwang performed 645 dialysis services for patients 20 or older services. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Dr. Hwang receive payments from pharmaceutical companies?
Yes. Dr. Hwang received a total of $1,926 from 25 companies across 100 payment records. A record can group multiple payments. These transfers are publicly disclosed through CMS Open Payments. Disclosure alone does not establish their legality or effect on care. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Hwang's costs compare to other nephrologists in Fresno?
Dr. Hwang's average Medicare payment per service is $66. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Hwang) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating the presence of registry, enrollment, activity or payment records, not verified experience or clinical quality. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Source publication dates and the snapshots loaded on this site can differ. Rebuilding a page does not refresh its source records. Check the Medicare reporting year and the payment interval shown above; consult the linked official sources for newer releases and current registry details. See our data freshness policy →
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About this page
This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: 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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