Medicare Enrolled
Dr. Jessica Chan, MD
Endocrinology · Mission Viejo, CA
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Low-engagement
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. Chan 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. Chan?
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What this data tells you about Dr. Chan
Dr. Jessica Chan is an endocrinology specialist in Mission Viejo, CA, with 11 years of NPI registration. Based on federal Medicare data, Dr. Chan performed 4,343 Medicare services across 937 unique beneficiaries.
Between the years covered by Open Payments, Dr. Chan received a total of $6,636 from 39 pharmaceutical and/or device companies across 303 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in endocrinology. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Chan 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.
✓ 11 years in practice
▲ Top 19% volume in CA
$6,636 industry payments
Medicare Practice Summary
Medicare Utilization ↗4,343
Medicare services
Top 19% in CA for endocrinology
937
Unique beneficiaries
$29
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~395 Medicare services per year of practice
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 |
|---|---|---|---|
| Denosumab injection (Prolia/Xgeva) | 2,760 | $16 | $30 |
| 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. |
493 | $99 | $345 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
135 | $8 | $13 |
| 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. |
108 | $12 | $39 |
| 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. |
95 | $123 | $447 |
| Thyroid stimulating hormone (TSH) test A blood test that measures the level of thyroid stimulating hormone to evaluate thyroid function. |
79 | $16 | $48 |
| Lipid panel (cholesterol and triglycerides) A blood test that measures cholesterol and triglyceride levels. |
77 | $13 | $43 |
| Hemoglobin A1c test (diabetes monitoring) A blood test that measures your average blood sugar levels over the past two to three months. |
77 | $9 | $32 |
| Free thyroxine (T4) test A blood test that measures the level of free thyroxine, a thyroid hormone, in the bloodstream. |
70 | $9 | $34 |
| Comprehensive metabolic blood panel A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers. |
61 | $10 | $32 |
| 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. |
55 | $6 | $39 |
| Creatinine test (kidney function) A blood test that measures the amount of creatinine to assess kidney function or detect muscle injury. |
55 | $5 | $18 |
| Vitamin D level test A blood test to measure the amount of Vitamin D-3 in your body. |
52 | $29 | $85 |
| Continuous glucose monitoring with interpretation This procedure involves monitoring blood sugar levels in tissue fluid using a sensor placed under the skin, along with the interpretation and reporting of the results. |
41 | $29 | $92 |
| 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. |
38 | $76 | $245 |
| Basic metabolic blood panel A blood test that measures a group of basic chemicals, including total calcium levels. |
37 | $8 | $24 |
| Bone density scan (DEXA) A test that uses low-dose X-rays to measure bone mineral density in the hip, pelvis, and spine. It helps assess bone strength and risk of fractures. |
35 | $44 | $109 |
| Ultrasound of head and neck soft tissue This procedure uses sound waves to create images of the soft tissues in the head and neck area. It allows for the visualization of structures beneath the skin without using radiation. |
32 | $99 | $325 |
| 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. |
22 | $40 | $104 |
| 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. |
21 | $114 | $485 |
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. A higher procedure volume generally indicates more experience with that procedure.
Industry Payment Transparency
Open Payments through 2024 ↗$6,636
Total received (2020-2024)
Avg $1,327/year across 5 years
Top 25% in CA for endocrinology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
39
Companies
303
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$6,636 (100.0%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$1,533
2023
$2,349
2022
$1,712
2021
$1,021
2020
$20
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Abbott Laboratories
$232
Corcept Therapeutics
$206
Radius Health, Inc.
$139
Novo Nordisk Inc
$94
Verity Pharmaceuticals Inc.
$91
Amgen Inc.
$90
SANOFI-AVENTIS U.S. LLC
$83
Tandem Diabetes Care, Inc.
$74
Dexcom, Inc.
$72
Insulet Corporation
$59
Boehringer Ingelheim Pharmaceuticals, Inc.
$49
ABBVIE INC.
$47
Embecta Corp.
$47
RECORDATI_RARE_DISEASES_INC.
$46
Lilly USA, LLC
$44
Medtronic, Inc.
$32
AstraZeneca Pharmaceuticals LP
$28
Xeris Pharmaceuticals, Inc.
$25
Mannkind Corporation
$22
Exact Sciences Corporation
$20
Alvogen Inc
$17
Antares Pharma, Inc.
$17
Top 3 companies account for 37.6% of 2024 payments
All-time payments by company (2020-2024) ›
Lilly USA, LLC
$1,076
Novo Nordisk Inc
$783
Abbott Laboratories
$633
Dexcom, Inc.
$457
Insulet Corporation
$444
Amgen Inc.
$365
Corcept Therapeutics
$344
Radius Health, Inc.
$281
Xeris Pharmaceuticals, Inc.
$195
Boehringer Ingelheim Pharmaceuticals, Inc.
$188
Medtronic, Inc.
$185
AstraZeneca Pharmaceuticals LP
$166
CeQur Corporation
$140
SANOFI-AVENTIS U.S. LLC
$128
AbbVie Inc.
$118
Tandem Diabetes Care, Inc.
$111
Verity Pharmaceuticals Inc.
$91
Antares Pharma, Inc.
$90
Bayer Healthcare Pharmaceuticals Inc.
$87
ABBVIE INC.
$77
DEXCOM, INC.
$70
RECORDATI_RARE_DISEASES_INC.
$69
Embecta Corp.
$69
Novartis Pharmaceuticals Corporation
$61
Alvogen Inc
$56
Supernus Pharmaceuticals, Inc.
$43
Exact Sciences Corporation
$41
Kyowa Kirin, Inc.
$40
Ascendis Pharma Inc
$35
Horizon Therapeutics plc
$31
PFIZER INC.
$31
Mannkind Corporation
$22
Merck Sharp & Dohme LLC
$20
Takeda Pharmaceuticals U.S.A., Inc.
$18
Ultragenyx Pharmaceutical Inc.
$16
Merck Sharp & Dohme Corporation
$14
Tolmar, Inc.
$14
Currax Pharmaceuticals LLC
$13
Esperion Therapeutics, Inc.
$13
Top 3 companies account for 37.6% of all-time payments
Associated products mentioned in payments ›
AFREZZA · AIRSUPRA · BAQSIMI · BD Nano 2nd Gen Pen Needle · BELSOMRA · CONTRAVE · CeQur Simplicity · Cologuard Collection Kit · Crysvita · DEXCOM G6 TRANSMITTER · Dexcom G6 Transmitter · EMGALITY · EVENITY · FARXIGA · FREESTYLE LIBRE · FREESTYLE LIBRE 3 · FreeStyle Libre · GARDASIL 9 · GVOKE HYPOPEN · GVOKE PFS · HUMULIN · INPEN SMART INSULIN DELIVERY SYSTEM · INTELLIS ADAPTIVESTIM · InPen · JARDIANCE · JATENZO · Kerendia · Korlym · LEQVIO · LYUMJEV · MINIMED 780G · MOUNJARO · Minimed 670G System · Minimed 770G System · NEXLETOL · NOCDURNA · Omnipod · Ozempic · RYBELSUS · Repatha · Rybelsus · SIGNIFOR LAR · SKYTROFA · SOLIQUA 100/33 · SOMAVERT · SYNTHROID · Saxenda · TEPEZZA · TERIPARATIDE · TLANDO · TOUJEO · TRINTELLIX · TRULICITY · TZIELD · Tlando · Tymlos · UBRELVY · VIBERZI · Wegovy · XYOSTED · t-slim insulin pump · t:slim X2 Insulin Pump with Control-IQ
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. 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 →
Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Endocrinologists within 10 mi
91
Per 100K population
2.9
County median income
$113,702
Nearest hospital
PROVIDENCE MISSION HOSPITAL
0.0 mi
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. Chan is a mixed practice specialist, with above-average Medicare volume (top 19% in CA), with low-engagement industry engagement.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Chan experienced with denosumab injection (prolia/xgeva)?
Based on Medicare claims data, Dr. Chan performed 2,760 denosumab injection (prolia/xgeva) services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Chan receive payments from pharmaceutical companies?
Yes. Dr. Chan received a total of $6,636 from 39 companies across 303 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. 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. Chan's costs compare to other endocrinologists in Mission Viejo?
Dr. Chan's average Medicare payment per service is $29. 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. Chan) 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 a long track record of practice, Medicare participation, and industry disclosure. 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?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
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About this page
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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