Medicare Enrolled
Dr. Charles Yen, M.D.
Optician · Houston, TX
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. Yen 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 →
Are you Dr. Yen?
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What this data tells you about Dr. Yen
Dr. Charles Yen is an optician specialist in Houston, TX, with 21 years of NPI registration. Based on federal Medicare data, Dr. Yen performed 28,466 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Yen received a total of $40,808 from 106 pharmaceutical and/or device companies across 1661 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. Yen 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.
✓ 21 years of NPI registration
▲ Top 2% volume in TX
$40,808 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗28,466
Medicare services
Top 2% in TX for optician
Not available
Unique patients (not deduplicated)
$8
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 |
|---|---|---|---|
| Iron infusion (Injectafer) An intravenous injection of ferric carboxymaltose, an iron replacement medication. |
21,000 | $1 | $3 |
| Dexamethasone injection (steroid) An injection of dexamethasone sodium phosphate, a corticosteroid medication, administered in a dose of 1 milligram. |
2,196 | $0 | $0 |
| Contrast dye for imaging (iodine-based) A contrast agent containing 300-399 mg/ml of iodine used to enhance imaging studies. It is administered per milliliter to improve the visibility of internal structures. |
2,100 | $0 | $0 |
| Anti-nausea injection (Aloxi/palonosetron) | 760 | $1 | $7 |
| 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. |
701 | $93 | $345 |
| Additional sequential IV infusion, 1 hour or less This code represents an additional intravenous infusion administered sequentially to a primary infusion. It covers the administration time of one hour or less. |
451 | $23 | $82 |
| Intravenous chemotherapy infusion, 1 hour or less Administration of chemotherapy medication directly into a vein. The procedure takes one hour or less to complete. |
261 | $105 | $375 |
| Additional hour of intravenous chemotherapy This code represents the administration of chemotherapy medication into a vein for each additional hour beyond the initial period. |
141 | $23 | $80 |
| 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. |
128 | $96 | $301 |
| Intravenous infusion of new drug or substance, 1 hour or less This procedure involves administering a new medication or substance directly into a vein through an existing access site. The infusion is completed within one hour or less. |
98 | $52 | $183 |
| 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. |
94 | $11 | $39 |
| Diphenhydramine injection, up to 50 mg An injection of diphenhydramine hydrochloride, an antihistamine medication, administered in a dose of up to 50 milligrams. |
92 | $1 | $3 |
| 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. |
85 | $70 | $251 |
| Irrigation of implanted venous access device This procedure involves flushing an implanted venous access device to clear blockages or maintain patency. It ensures the device remains functional for delivering medications or fluids. |
71 | $20 | $73 |
| 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. |
63 | $50 | $179 |
| 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. |
55 | $127 | $448 |
| Nuclear medicine scan from skull base to mid-thigh with CT A nuclear medicine imaging study covering the area from the base of the skull to the middle of the thighs, performed alongside a CT scan. |
36 | $1,182 | $5,182 |
| 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. |
27 | $140 | $504 |
| Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries | 27 | $109 | $295 |
| 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. |
23 | $145 | $462 |
| Office visit for established patient An office visit for an existing patient that may not require the healthcare professional to be present. |
22 | $19 | $62 |
| CT scan of abdomen and pelvis with contrast A CT scan of the abdomen and pelvis using contrast dye before and after administration to visualize internal structures. |
18 | $187 | $910 |
| CT scan of chest with contrast A computed tomography scan of the chest using a contrast dye to enhance the visibility of internal structures. |
17 | $48 | $433 |
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.
76.8% high complexity
19.2% medium
4.0% routine
Industry Payment Transparency
Open Payments through 2024 ↗$40,808
Total received (2018-2024)
Avg $5,830/year across 7 years
Top 6% in TX for optician
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
106
Companies
1,661
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
$10,021
2023
$7,564
2022
$5,317
2021
$6,860
2020
$2,153
2019
$6,203
2018
$2,689
Payments by company (2024)
Karyopharm Therapeutics Inc.
$3,008
AstraZeneca Pharmaceuticals LP
$649
Janssen Biotech, Inc.
$616
PFIZER INC.
$465
Daiichi Sankyo Inc.
$396
E.R. Squibb & Sons, L.L.C.
$372
Novartis Pharmaceuticals Corporation
$361
Celgene Corporation
$325
ABBVIE INC.
$324
Eisai Inc.
$310
Takeda Pharmaceuticals U.S.A., Inc.
$283
SOBI, INC
$261
GENZYME CORPORATION
$253
GlaxoSmithKline, LLC.
$221
Merck Sharp & Dohme LLC
$176
TAIHO ONCOLOGY, INC.
$166
Lilly USA, LLC
$133
Astellas Pharma US Inc
$127
Ipsen Biopharmaceuticals, Inc
$108
TerSera Therapeutics LLC
$102
Blueprint Medicines Corporation
$95
Incyte Corporation
$94
PharmaEssentia USA Corporation
$86
Tempus AI, Inc
$82
Regeneron Healthcare Solutions, Inc.
$76
Gilead Sciences, Inc.
$71
Genentech USA, Inc.
$69
SpringWorks Therapeutics, Inc.
$65
Mirati Therapeutics, Inc.
$57
Deciphera Pharmaceuticals Inc.
$50
Boston Scientific Corporation
$45
Dendreon Pharmaceuticals LLC
$44
Kite Pharma, Inc.
$33
Pharming Healthcare, Inc.
$32
Sirtex Medical Inc
$32
Aveo Pharmaceuticals, Inc.
$32
JAZZ PHARMACEUTICALS INC.
$31
Amneal Pharmaceuticals LLC
$27
Janssen Pharmaceuticals, Inc
$26
PUMA BIOTECHNOLOGY, INC.
$25
Alexion Pharmaceuticals, Inc.
$25
MorphoSys, US Inc.
$23
Stemline Therapeutics Inc.
$22
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$21
Bayer Healthcare Pharmaceuticals Inc.
$21
Boehringer Ingelheim Pharmaceuticals, Inc.
$20
ImmunoGen, Inc.
$18
ADC Therapeutics America, Inc.
$18
Immunocore Limited
$18
Spectrum Pharmaceuticals Inc.
$17
Novocure Inc.
$17
Novo Nordisk Inc
$16
BeiGene USA, Inc.
$15
Rigel Pharmaceuticals, Inc.
$15
EMD Serono, Inc.
$14
Agios Pharmaceuticals, Inc.
$14
Top 3 companies account for 42.6% of 2024 payments
All-time payments by company (2018-2024) ›
AstraZeneca Pharmaceuticals LP
$4,311
Karyopharm Therapeutics Inc.
$3,287
Janssen Biotech, Inc.
$2,907
Janssen Scientific Affairs, LLC
$2,366
Novartis Pharmaceuticals Corporation
$2,270
Celgene Corporation
$2,016
E.R. Squibb & Sons, L.L.C.
$1,593
PFIZER INC.
$1,573
Amgen Inc.
$1,506
GlaxoSmithKline, LLC.
$1,472
GENZYME CORPORATION
$1,170
Astellas Pharma US Inc
$1,015
Takeda Pharmaceuticals U.S.A., Inc.
$868
Daiichi Sankyo Inc.
$835
Seagen Inc.
$695
Incyte Corporation
$672
Eisai Inc.
$656
Genentech USA, Inc.
$634
Lilly USA, LLC
$613
Merck Sharp & Dohme Corporation
$609
Gilead Sciences, Inc.
$595
Pharmacyclics LLC, An AbbVie Company
$480
SOBI, INC
$398
Merck Sharp & Dohme LLC
$390
ABBVIE INC.
$366
PharmaEssentia USA Corporation
$342
BeiGene USA, Inc.
$324
Ipsen Biopharmaceuticals, Inc
$298
Boehringer Ingelheim Pharmaceuticals, Inc.
$274
COMSORT, Inc
$250
Myriad Genetic Laboratories, Inc.
$242
Regeneron Healthcare Solutions, Inc.
$225
TAIHO ONCOLOGY, INC.
$220
AVEO Pharmaceuticals, Inc.
$210
Dendreon Pharmaceuticals LLC
$198
Pharmacosmos Therapeutics Inc.
$182
Rigel Pharmaceuticals, Inc.
$178
Kite Pharma, Inc.
$172
Blueprint Medicines Corporation
$170
TerSera Therapeutics LLC
$156
EISAI INC.
$152
MorphoSys, US Inc.
$141
ARRAY BIOPHARMA INC
$140
Pharmacyclics LLC, an AbbVie Company
$126
EMD Serono, Inc.
$123
Verastem, Inc.
$121
Coherus Biosciences Inc.
$119
Sobi, Inc
$119
Janssen Pharmaceuticals, Inc
$112
Taiho Oncology, Inc.
$110
Bayer Healthcare Pharmaceuticals Inc.
$106
CTI BioPharma Corp.
$104
Agios Pharmaceuticals, Inc.
$103
Dova Pharmaceuticals
$101
Bayer HealthCare Pharmaceuticals Inc.
$100
SANOFI-AVENTIS U.S. LLC
$100
Alexion Pharmaceuticals, Inc.
$96
Foundation Medicine, Inc.
$96
Adaptive Biotechnologies Corporation
$94
Mirati Therapeutics, Inc.
$90
Stemline Therapeutics Inc.
$89
Pharming Healthcare, Inc.
$86
Tempus AI, Inc
$82
Teva Pharmaceuticals USA, Inc.
$78
Puma Biotechnology, Inc.
$77
Servier Pharmaceuticals LLC
$77
Spectrum Pharmaceuticals Inc.
$76
Octapharma USA, Inc.
$66
SpringWorks Therapeutics, Inc.
$65
Global Blood Therapeutics, Inc.
$64
Clovis Oncology, Inc.
$62
Sirtex Medical Inc
$54
AbbVie Inc.
$53
Deciphera Pharmaceuticals Inc.
$50
PUMA BIOTECHNOLOGY, INC.
$47
Boston Scientific Corporation
$45
G1 Therapeutics, Inc.
$44
TESARO, Inc.
$41
ADC Therapeutics America, Inc.
$40
Genentech, Inc.
$38
Immunocore Limited
$37
Epizyme, Inc.,
$35
Myovant Sciences Inc.
$34
Aveo Pharmaceuticals, Inc.
$32
Novo Nordisk Inc
$31
JAZZ PHARMACEUTICALS INC.
$31
Amneal Pharmaceuticals LLC
$27
Aurobindo Pharma USA, Inc.
$24
Heron Therapeutics, Inc.
$24
MEDIVATION FIELD SOLUTIONS LLC
$23
Horizon Pharma plc
$22
Nestle HealthCare Nutrition Inc.
$21
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$21
Emmaus Medical, Inc.
$20
Sumitomo Pharma America, Inc.
$19
Mylan Institutional Inc.
$18
Fortovia Therapeutics, Inc.
$18
ImmunoGen, Inc.
$18
Lexicon Pharmaceuticals, Inc.
$18
Novocure Inc.
$17
Helsinn Therapeutics (U.S.), Inc.
$17
Seattle Genetics, Inc.
$17
Array BioPharma Inc.
$15
SERVIER PHARMACEUTICALS LLC
$14
AMAG Pharmaceuticals, Inc.
$13
UCB, Inc.
$13
Top 3 companies account for 25.7% of all-time payments
Associated products mentioned in payments ›
ABECMA · ADAKVEO · ADCETRIS · AFINITOR · ALIMTA · ALUNBRIG · AVASTIN · AYVAKIT · Abraxane · Alecensa · Aliqopa · Avastin · BALVERSA · BAVENCIO · BENDEKA · BESREMI · BLENREP · BOSULIF · BRAFTOVI · BRUKINSA · Bavencio · Blincyto · Braftovi · CABLIVI · CALQUENCE · CARVYKTI · CHANTIX · CINVANTI · COSELA · CYRAMZA · Cimzia · Columvi · Copiktra · DARZALEX · DOPTELET · Doptelet · ELAHERE · ELIQUIS · ELITEK · ELREXFIO · EMEND · EMPLICITI · ENHERTU · ENJAYMO · EPKINLY · ERBITUX · ERLEADA · EXKIVITY · Endari · Enhertu · Erleada · FERAHEME · FOTIVDA · FOUNDATIONONE · FRUZAQLA · Fabhalta · Folotyn · GAZYVA · GILOTRIF · HYQVIA · Halaven · IBRANCE · ICLUSIG · IDHIFA · IMBRUVICA · IMFINZI · INFLECTRA · INJECTAFER · INLYTA · INQOVI · INREBIC · Imbruvica · Inrebic · JADENU · JAKAFI · JEMPERLI · JEVTANA · KANJINTI · KEYTRUDA · KIMMTRAK · KISQALI · KRAZATI · Kyprolis · LIBTAYO · LIBTAYO CEMIPLIMAB-RWLC INJECTION · LONSURF · LORBRENA · LUMAKRAS · LYNPARZA · Lenvima · Lonsurf · Lunsumio · MEKINIST · MONJUVI · MONOFERRIC · MYLOTARG · MYRISK · Monoferric · NERLYNX · NINLARO · Nerlynx · NovoSeven · Novoeight · Nplate · Nubeqa · OCTAGAM IMMUNE GLOBULIN (HUMAN) · OGIVRI · OGSIVEO · OJJAARA · ONUREG · OPDIVO · OPDUALAG · ORGOVYX · OXBRYTA · Onivyde · Optune Lua (NovoTTF-200T) · Orserdu · PADCEV · PIQRAY · PLUVICTO · POLIVY · PROMACTA · PROVENGE · Padcev · Perjeta · Phesgo · Pomalyst · PreciseTumor · Prolia · QINLOCK · Quzyttir · RAYOS · REBLOZYL · RETEVMO · ROLVEDON · RUCONEST · RYBREVANT · RYDAPT · Revlimid · Rezlidhia · Rubraca · SANDOSTATIN · SARCLISA · SCEMBLIX · SIR-Spheres Microspheres · SOMATULINE DEPOT · SPRYCEL · SUTENT · SYNAGIS · Stivarga · TABRECTA · TAGRISSO · TASIGNA · TAZVERIK · TECENTRIQ · TECVAYLI · TEPMETKO · TIBSOVO · TRUSELTIQ · TUKYSA · TUMOR LYSIS SYNDROME - DISEASE · Tavalisse · Tazverik · TheraSphere Y90 Glass Microspheres 10 GBq · Trodelvy · ULTOMIRIS · Udenyca · VENCLEXTA · VERZENIO · VIZIMPRO · VONJO · Vectibix · Venclexta · Vitrakvi · Vonjo · XALKORI · XARELTO · XGEVA · XIFAXAN · XPOVIO · XT CDX · XTANDI · Xermelo · Xospata · Xtandi · Yescarta · ZEJULA · ZENPEP · ZEPZELCA · ZOLADEX · ZYTIGA · Zoladex · clonoSEQ
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
Opticians in nearby ZIP areas
455
County median income
$73,104
Nearest hospital to ZIP centroid (approximate)
HCA HOUSTON HEALTHCARE NORTHWEST
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. Yen is a mixed practice specialist, with above-average Medicare volume (top 2% in TX), with 21 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. Yen experienced with iron infusion (injectafer)?
Based on Medicare claims data, Dr. Yen performed 21,000 iron infusion (injectafer) 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. Yen receive payments from pharmaceutical companies?
Yes. Dr. Yen received a total of $40,808 from 106 companies across 1,661 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. Yen's costs compare to other opticians in Houston?
Dr. Yen's average Medicare payment per service is $8. 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. Yen) 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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