Medicare Enrolled
Dr. Chinh Mai, MD
Hospitalist Physician · Westminster, CA
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
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. Mai 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. Mai
Dr. Chinh Mai is a hospitalist physician in Westminster, CA, with 16 years of NPI registration. Based on federal Medicare data, Dr. Mai performed 15,609 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Mai received a total of $13,853 from 43 pharmaceutical and/or device companies across 642 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. Mai 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.
✓ 16 years of NPI registration
▲ Top 1% volume in CA
$13,853 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗15,609
Medicare services
Top 1% in CA for hospitalist physician
Not available
Unique patients (not deduplicated)
$37
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 |
|---|---|---|---|
| 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. |
3,794 | $58 | $195 |
| 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. |
2,142 | $52 | $133 |
| Blood glucose level test A test that measures the amount of sugar in your blood. |
1,967 | $4 | $11 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
810 | $8 | $20 |
| Additional hour of intravenous infusion This code represents each additional hour of intravenous infusion beyond the initial hour for therapy, prevention, or diagnosis. |
725 | $18 | $40 |
| Hemoglobin a1c level, by device for home use | 680 | $10 | $40 |
| Injection, thiamine hcl, 100 mg | 670 | $2 | $11 |
| 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. |
638 | $53 | $74 |
| 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. |
537 | $12 | $30 |
| 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. |
365 | $58 | $135 |
| 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. |
340 | $1 | $10 |
| Advance care planning consultation, first 30 min A session focused on discussing and documenting future healthcare preferences and goals. This service covers the initial 30 minutes of the planning discussion. |
318 | $33 | $149 |
| 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. |
314 | $28 | $62 |
| Annual wellness visit, follow-up A follow-up annual wellness visit that includes a personalized prevention plan of service. |
301 | $44 | $210 |
| Vitamin B-12 injection An injection of vitamin B-12 (cyanocobalamin) with a dose of up to 1000 mcg. |
295 | $1 | $11 |
| Annual depression screening | 276 | $21 | $33 |
| Office visit, established patient (10-19 min) An office visit for an existing patient lasting 10 to 19 minutes. The visit involves medical evaluation and management of the patient's condition. |
243 | $45 | $82 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
243 | $33 | $60 |
| Obesity behavioral counseling, 15 minutes A 15-minute face-to-face session focused on behavioral counseling to help manage obesity. |
148 | $27 | $45 |
| Flu vaccine, quadrivalent A flu shot containing four strains of the influenza virus to help prevent seasonal influenza infection. |
99 | $72 | $75 |
| Flu vaccine, high-dose High-dose seasonal influenza vaccine for adults aged 65 and older. Contains four times the antigen of standard-dose flu vaccines (60 mcg per strain), split-virus formulation, preservative-free, single-dose syringe. |
96 | $72 | $75 |
| Home visit, established patient, high complexity A home visit for an established patient involving high-level medical decision making, lasting at least 60 minutes. |
90 | $93 | $314 |
| Transitional care management, high complexity Coordination of care for a patient transitioning from a short-term hospital stay or other facility to home or another care setting. This service addresses a high-complexity medical problem. |
89 | $76 | $417 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
65 | $174 | $386 |
| 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. |
62 | $93 | $292 |
| Assessment of and care planning for patient with impaired thought processing, typically 60 minutes | 61 | $236 | $468 |
| Quadrivalent influenza vaccine, preservative-free A flu shot containing four strains of the influenza virus, formulated without preservatives, administered in a 0.5 ml dose. |
47 | $22 | $38 |
| Complete ultrasound of abdomen A diagnostic imaging test that uses sound waves to create detailed pictures of the organs and structures within the abdomen. |
39 | $107 | $227 |
| Ultrasound of arm and leg arteries A non-invasive imaging test that uses sound waves to examine the blood vessels in the arms and legs. It evaluates blood flow and checks for blockages or other vascular issues. |
34 | $118 | $254 |
| Ear wax removal A procedure to remove impacted ear wax from the ear canal. |
31 | $41 | $85 |
| Ultrasound of leg arteries or grafts An imaging test that uses sound waves to create pictures of the blood vessels in the legs or any surgical grafts present. |
28 | $218 | $487 |
| Ultrasound of head and neck blood flow, bilateral An ultrasound exam that uses sound waves to visualize and assess blood flow in the vessels of both the head and the neck. |
21 | $176 | $382 |
| Transitional care management services, moderate complexity Services provided to coordinate care during the transition from an inpatient or other facility setting back to the community. This includes follow-up and management of a health problem of at least moderate complexity. |
15 | $74 | $297 |
| Remote physiologic monitoring setup and education Initial setup of remote monitoring equipment and patient education on its use. |
13 | $18 | $56 |
| Normal saline infusion, 250 cc Administration of 250 cubic centimeters of normal saline solution into a vein. This procedure involves the intravenous delivery of a sterile saltwater fluid. |
13 | $1 | $10 |
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.
9.7% high complexity
10.4% medium
79.9% routine
Industry Payment Transparency
Open Payments through 2024 ↗$13,853
Total received (2018-2024)
Avg $1,979/year across 7 years
Top 2% in CA for hospitalist physician
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
43
Companies
642
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
$2,547
2023
$1,799
2022
$3,455
2021
$3,030
2020
$1,724
2019
$1,052
2018
$246
Payments by company (2024)
AstraZeneca Pharmaceuticals LP
$367
ABBVIE INC.
$331
Boehringer Ingelheim Pharmaceuticals, Inc.
$237
Amgen Inc.
$223
Gilead Sciences, Inc.
$199
Merck Sharp & Dohme LLC
$155
Novartis Pharmaceuticals Corporation
$131
Novo Nordisk Inc
$119
Lilly USA, LLC
$114
Sumitomo Pharma America, Inc.
$99
GlaxoSmithKline, LLC.
$89
Xeris Pharmaceuticals, Inc.
$87
Ardelyx, Inc.
$85
Dexcom, Inc.
$64
IRONWOOD PHARMACEUTICALS, INC
$62
AIMMUNE THERAPEUTICS, INC.
$44
SHIELD THERAPEUTICS INC
$39
PFIZER INC.
$22
Mylan Specialty L.P.
$20
Exact Sciences Corporation
$20
Phathom Pharmaceuticals, Inc.
$20
Kowa Pharmaceuticals America, Inc.
$20
Top 3 companies account for 36.7% of 2024 payments
All-time payments by company (2018-2024) ›
Amgen Inc.
$1,943
AstraZeneca Pharmaceuticals LP
$1,799
Boehringer Ingelheim Pharmaceuticals, Inc.
$1,595
Amarin Pharma Inc.
$910
Novo Nordisk Inc
$881
GlaxoSmithKline, LLC.
$734
SANOFI-AVENTIS U.S. LLC
$565
Lilly USA, LLC
$538
Dexcom, Inc.
$450
Novartis Pharmaceuticals Corporation
$449
ABBVIE INC.
$436
Merck Sharp & Dohme LLC
$384
Sunovion Pharmaceuticals Inc.
$324
Gilead Sciences, Inc.
$309
AbbVie Inc.
$302
Sumitomo Pharma America, Inc.
$202
Nestle HealthCare Nutrition Inc.
$191
Merck Sharp & Dohme Corporation
$178
DEXCOM, INC.
$173
Bayer HealthCare Pharmaceuticals Inc.
$163
AbbVie, Inc.
$122
PFIZER INC.
$115
Radius Health, Inc.
$100
NESTLE HEALTHCARE NUTRITION INC.
$97
Sanofi Pasteur Inc.
$95
Ironwood Pharmaceuticals, Inc
$87
Xeris Pharmaceuticals, Inc.
$87
Ardelyx, Inc.
$85
Janssen Pharmaceuticals, Inc
$82
IRONWOOD PHARMACEUTICALS, INC
$62
SANOFI PASTEUR INC.
$62
AIMMUNE THERAPEUTICS, INC.
$44
Astellas Pharma US Inc
$42
SHIELD THERAPEUTICS INC
$39
Mylan Specialty L.P.
$39
Genentech USA, Inc.
$36
Medtronic Vascular, Inc.
$28
Exact Sciences Corporation
$20
Phathom Pharmaceuticals, Inc.
$20
Kowa Pharmaceuticals America, Inc.
$20
Cranial Technologies, Inc
$16
Paratek Pharmaceuticals, Inc.
$16
Biohaven Pharmaceuticals, Inc.
$14
Top 3 companies account for 38.5% of all-time payments
Associated products mentioned in payments ›
ACCRUFER · AIRSUPRA · AMYVID · ANORO ELLIPTA · APTIOM · Aimovig · BAQSIMI · BELSOMRA · BEXSERO · BREZTRI · BRILINTA · CREON · Cologuard Collection Kit · DEXCOM G6 TRANSMITTER · Dexcom G6 Transmitter · Doc Band · ELIQUIS · ENTRESTO · EUCRISA · EVENITY · FARXIGA · FLUZONE HIGH-DOSE · GARDASIL · GARDASIL 9 · GEMTESA · GVOKE HYPOPEN · IBSRELA · INVOKANA · JANUVIA · JARDIANCE · Kerendia · LEQVIO · LINZESS · Linzess · M-M-R II · MENQUADFI · MOUNJARO · MYRBETRIQ · Mavyret · NOXAFIL · NURTEC ODT · NUZYRA · Otezla · Ozempic · PENTACEL · PREVNAR 13 · ROTATEQ · RYBELSUS · Repatha · Rybelsus · SOLIQUA 100/33 · SPIRIVA RESPIMAT · STIOLTO RESPIMAT · SYMBICORT · SYNJARDY · TOUJEO · TRADJENTA · TRELEGY ELLIPTA · TRULICITY · Tresiba · Tymlos · VAXELIS · VERQUVO · VIBERZI · VOQUEZNA · Valiant Captivia · Vascepa · Vemlidy · XARELTO · Xofluza · YUPELRI · ZENPEP · ZORYVE
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
Hospitalist physicians in nearby ZIP areas
207
County median income
$113,702
Nearest hospital to ZIP centroid (approximate)
HUNTINGTON BEACH HOSPITAL
2.2 mi
2.2 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. Mai is a clinical cardiology specialist, with above-average Medicare volume (top 1% in CA), with 16 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. Mai experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Mai performed 3,794 office visit, established patient (30-39 min) 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. Mai receive payments from pharmaceutical companies?
Yes. Dr. Mai received a total of $13,853 from 43 companies across 642 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. Mai's costs compare to other hospitalist physicians in Westminster?
Dr. Mai's average Medicare payment per service is $37. 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. Mai) 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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