Medicare Enrolled
Dr. Brian Chavez, M.D.
Endocrinology · Lake Forest, 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. Chavez 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. Chavez?
Request a correction or review of any data shown here. Provider portal →
What this data tells you about Dr. Chavez
Dr. Brian Chavez is an endocrinology specialist in Lake Forest, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Chavez performed 21,656 Medicare services across 9,205 unique beneficiaries.
Between the years covered by Open Payments, Dr. Chavez received a total of $13,884 from 70 pharmaceutical and/or device companies across 546 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. Chavez 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 in practice
▲ Top 4% volume in CA
$13,884 industry payments
Medicare Practice Summary
Medicare Utilization ↗21,656
Medicare services
Top 4% in CA for endocrinology
9,205
Unique beneficiaries
$20
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~1,140 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 |
|---|---|---|---|
| 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. |
1,049 | $96 | $262 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
884 | $8 | $20 |
| Basic metabolic blood panel A blood test that measures a group of basic chemicals, including total calcium levels. |
880 | $8 | $42 |
| Thyroid stimulating hormone (TSH) test A blood test that measures the level of thyroid stimulating hormone to evaluate thyroid function. |
875 | $16 | $54 |
| 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. |
874 | $8 | $30 |
| Liver function blood test panel | 864 | $8 | $41 |
| Free thyroxine (T4) test A blood test that measures the level of free thyroxine, a thyroid hormone, in the bloodstream. |
864 | $9 | $60 |
| Total T3 thyroid hormone test A blood test that measures the total amount of triiodothyronine (T3) hormone in your body. T3 is a thyroid hormone that helps regulate metabolism and energy levels. |
863 | $14 | $45 |
| Vitamin D level test A blood test to measure the amount of Vitamin D-3 in your body. |
855 | $29 | $95 |
| 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. |
848 | $40 | $132 |
| Hemoglobin A1c test (diabetes monitoring) A blood test that measures your average blood sugar levels over the past two to three months. |
844 | $9 | $32 |
| 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. |
842 | $5 | $33 |
| Magnesium level test A blood test to measure the amount of magnesium in your body. This helps check for magnesium deficiency or excess. |
840 | $7 | $38 |
| Lipid panel (cholesterol and triglycerides) A blood test that measures cholesterol and triglyceride levels. |
824 | $13 | $51 |
| Folic acid level test A blood test that measures the amount of folic acid in the serum. |
815 | $14 | $47 |
| Iron level test | 815 | $6 | $21 |
| 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. |
815 | $9 | $29 |
| Ferritin level test (iron stores) A blood test that measures the level of ferritin, a protein that stores iron in the body. |
814 | $13 | $45 |
| 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. |
799 | $4 | $21 |
| Vitamin B-12 level test A blood test that measures the amount of vitamin B-12 in your body. |
793 | $15 | $53 |
| Chronic care management, first 20 min/month This service covers the first 20 minutes of clinical staff time directed by a healthcare professional each calendar month to manage chronic conditions. |
775 | $51 | $125 |
| Cardiac enzyme level (CK-MB) test A blood test that measures the total level of creatine kinase, specifically the cardiac enzyme fraction, to help evaluate heart muscle damage. |
684 | $6 | $21 |
| Microsomal antibody test A blood test that measures the level of microsomal antibodies, which are autoantibodies produced by the immune system. |
573 | $14 | $90 |
| C-peptide level test A blood test that measures the amount of C-peptide, a protein produced along with insulin, to help evaluate insulin production and diabetes management. |
436 | $20 | $66 |
| 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. |
308 | $92 | $253 |
| Annual alcohol misuse screening, 5 to 15 minutes | 223 | $20 | $40 |
| 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. |
180 | $6 | $11 |
| Creatinine test (kidney function) A blood test that measures the amount of creatinine to assess kidney function or detect muscle injury. |
179 | $5 | $10 |
| Chronic care management, additional 20 min/month This service covers an extra 20 minutes of clinical staff time directed by a healthcare professional for managing two or more chronic conditions each calendar month. |
169 | $40 | $94 |
| COVID-19 antibody test A blood test that measures antibodies to severe acute respiratory syndrome coronavirus 2 (COVID-19). It detects the presence of immune response markers to the virus. |
151 | $41 | $76 |
| Total testosterone level test A blood test that measures the total amount of testosterone in your body. This hormone is important for various bodily functions in both men and women. |
116 | $25 | $83 |
| Sex hormone binding globulin level test A blood test that measures the level of sex hormone binding globulin, a protein that binds to sex hormones in the bloodstream. |
114 | $21 | $40 |
| Blood glucose test using hand-held instrument A test that measures the level of sugar in the blood using a portable device. The result helps monitor blood glucose levels. |
88 | $3 | $5 |
| Total estradiol level test A blood test that measures the total amount of estradiol, a form of estrogen, in the body. |
77 | $27 | $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. |
69 | $27 | $73 |
| Follicle stimulating hormone (FSH) level A blood test to measure the level of follicle stimulating hormone, a reproductive hormone. |
60 | $18 | $83 |
| Luteinizing hormone level test A blood test that measures the level of luteinizing hormone, a reproductive hormone. This test helps evaluate hormonal balance and reproductive function. |
60 | $18 | $83 |
| 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. |
52 | $66 | $181 |
| PSA test (prostate cancer screening) | 50 | $18 | $34 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
48 | $24 | $24 |
| Progesterone level test A blood test that measures the amount of progesterone, a reproductive hormone, in your body. |
45 | $20 | $75 |
| Quadrivalent influenza vaccine, cell-culture derived A flu shot containing four strains of influenza virus, produced using cell culture technology rather than eggs. This formulation is free from preservatives and antibiotics. |
40 | $33 | $112 |
| PSA test (prostate cancer screening) A blood test that measures the level of prostate-specific antigen to screen for prostate cancer. |
32 | $19 | $60 |
| 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. |
21 | $12 | $52 |
| New patient office visit, complex (60-74 min) | 20 | $180 | $444 |
| 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. |
15 | $113 | $346 |
| 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. |
14 | $100 | $236 |
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 ↗$13,884
Total received (2018-2024)
Avg $1,983/year across 7 years
Top 16% in CA for endocrinology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
70
Companies
546
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
$13,779 (99.2%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$105 (0.8%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$2,367
2023
$2,707
2022
$1,870
2021
$2,255
2020
$1,229
2019
$1,606
2018
$1,850
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
ABBVIE INC.
$318
Lilly USA, LLC
$271
Boehringer Ingelheim Pharmaceuticals, Inc.
$270
Novartis Pharmaceuticals Corporation
$212
Novo Nordisk Inc
$185
CeQur Corporation
$170
Amgen Inc.
$114
SANOFI-AVENTIS U.S. LLC
$98
Corcept Therapeutics
$82
Mannkind Corporation
$77
Embecta Corp.
$70
Xeris Pharmaceuticals, Inc.
$70
CALLIDITAS THERAPEUTICS US INC.
$57
Verity Pharmaceuticals Inc.
$43
Bayer Healthcare Pharmaceuticals Inc.
$37
Otsuka America Pharmaceutical, Inc.
$36
Dexcom, Inc.
$34
Antares Pharma, Inc.
$33
Madrigal Pharmaceuticals
$30
Alnylam Pharmaceuticals Inc.
$29
Exact Sciences Corporation
$23
Astellas Pharma US Inc
$22
Ascensia Diabetes Care Us Inc.
$21
SCILEX PHARMACEUTICALS INC.
$21
Abbott Laboratories
$16
Rhythm Pharmaceuticals, Inc.
$15
Currax Pharmaceuticals LLC
$13
Top 3 companies account for 36.3% of 2024 payments
All-time payments by company (2018-2024) ›
Amgen Inc.
$1,362
Boehringer Ingelheim Pharmaceuticals, Inc.
$1,328
Lilly USA, LLC
$1,286
AstraZeneca Pharmaceuticals LP
$1,070
SANOFI-AVENTIS U.S. LLC
$583
Novo Nordisk Inc
$514
CeQur Corporation
$508
Novartis Pharmaceuticals Corporation
$507
Insulet Corporation
$505
Corcept Therapeutics
$481
Horizon Therapeutics plc
$422
Bayer Healthcare Pharmaceuticals Inc.
$418
Bayer HealthCare Pharmaceuticals Inc.
$377
Esperion Therapeutics, Inc.
$338
ABBVIE INC.
$335
MannKind Corporation
$330
Amarin Pharma Inc.
$281
Mannkind Corporation
$272
AbbVie Inc.
$270
Dexcom, Inc.
$268
Antares Pharma, Inc.
$213
Merck Sharp & Dohme Corporation
$192
Xeris Pharmaceuticals, Inc.
$124
GENZYME CORPORATION
$105
Embecta Corp.
$102
DEXCOM, INC.
$92
Calliditas Therapeutics US Inc.
$92
Abbott Laboratories
$79
CALLIDITAS THERAPEUTICS US INC.
$77
Horizon Pharma plc
$72
Zealand Pharma US, Inc.
$67
Becton, Dickinson and Company
$58
Takeda Pharmaceuticals U.S.A., Inc.
$57
AbbVie, Inc.
$57
Kowa Pharmaceuticals America, Inc.
$57
Janssen Pharmaceuticals, Inc
$51
PFIZER INC.
$49
Alnylam Pharmaceuticals Inc.
$49
Otsuka America Pharmaceutical, Inc.
$48
Medtronic MiniMed, Inc.
$46
Verity Pharmaceuticals Inc.
$43
Radius Health, Inc.
$43
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$42
Valeritas, Inc.
$41
Boston Scientific Corporation
$40
Shield Therapeutics Inc
$39
Ultragenyx Pharmaceutical Inc.
$37
Alvogen Inc
$34
Alfasigma USA, Inc.
$33
OPKO Pharmaceuticals, LLC
$32
Madrigal Pharmaceuticals
$30
Genentech USA, Inc.
$23
Exact Sciences Corporation
$23
Vertical Pharmaceuticals, LLC
$23
Astellas Pharma US Inc
$22
Ascensia Diabetes Care Us Inc.
$21
SCILEX PHARMACEUTICALS INC.
$21
Endo Pharmaceuticals Inc.
$19
Tandem Diabetes Care, Inc.
$19
IDORSIA PHARMACEUTICALS US INC
$16
Alexion Pharmaceuticals, Inc.
$16
ARBOR PHARMACEUTICALS, INC.
$15
Rhythm Pharmaceuticals, Inc.
$15
GlaxoSmithKline, LLC.
$14
Nalpropion Pharmaceuticals LLC
$14
Currax Pharmaceuticals LLC
$13
IBSA Pharma Inc.
$13
Seqirus USA Inc
$12
Amryt Pharma Holdings Ltd
$12
Gemini Laboratories, LLC
$12
Top 3 companies account for 28.6% of all-time payments
Associated products mentioned in payments ›
ACCRUFER · AFREZZA · Aimovig · Androgel · BAQSIMI · BASAGLAR · BD Nano · BD Nano 2nd Gen Pen Needle · CONTRAVE · CeQur Simplicity · Cologuard Collection Kit · Creon · Crysvita · DEXCOM G6 TRANSMITTER · DEXCOM G7 GSS (161) · DIVIGEL · Dexcom CGM · Dexcom G6 Transmitter · EMGALITY · ETERNA · EVENITY · EVERSENSE 365 SENSOR KIT (RETAIL) · Edarbi · FARXIGA · Fluad · FreeStyle Libre · FreeStyle Libre blood glucose Flash Monitoring System · GVOKE PFS · HUMULIN R 500 · IMCIVREE · INVOKANA · JANUVIA · JARDIANCE · JYNARQUE · KEVEYIS · Kerendia · Korlym · LEQVIO · LICART · LYRICA · LYUMJEV · Livalo · MOUNJARO · MYCAPSSA · Minimed 670G System · NASCOBAL · NEXLETOL · NEXLIZET · NOCDURNA · NO_PRODUCT · OTREXUP · OXLUMO · Omnipod · Otezla · Otrexup · Ozempic · PENNSAID · PREMARIN · QULIPTA · QUVIVIQ · RAYALDEE · RECORLEV · RESMETIROM · Repatha · Rybelsus · SHINGRIX · SOLIQUA · SOLIQUA 100/33 · STRENSIQ · SYNTHROID · Saxenda · TARPEYO · TEPEZZA · TERIPARATIDE · TOUJEO · TRULICITY · TZIELD · Tlando · Trintellix · Tymlos · UBRELVY · UNITHROID · V-GO · V-GO DISPOSABLE INSULIN DELIVERY · Vascepa · Veozah · WaveWriter Alpha Prime 16 · Wegovy · XIFAXAN · XYOSTED · Xofluza · ZTLido · Zelnorm · t:slim X2 insulin pump
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 (99%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Endocrinologists within 10 mi
97
Per 100K population
3.1
County median income
$113,702
Nearest hospital
PROVIDENCE MISSION HOSPITAL
2.5 mi
2.5 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. Chavez is a mixed practice specialist, with above-average Medicare volume (top 4% in CA), with low-engagement industry engagement in the top 16% 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
Is Dr. Chavez experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Chavez performed 1,049 office visit, established patient (30-39 min) 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. Chavez receive payments from pharmaceutical companies?
Yes. Dr. Chavez received a total of $13,884 from 70 companies across 546 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. Chavez's costs compare to other endocrinologists in Lake Forest?
Dr. Chavez's average Medicare payment per service is $20. 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. Chavez) 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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