Dr. Kelvin Mai, DO
What this data tells you about Dr. Mai
Dr. Kelvin Mai is an internal medicine specialist in Santa Ana, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Mai performed 16,608 Medicare services across 8,567 unique beneficiaries.
Between the years covered by Open Payments, Dr. Mai received a total of $36,342 from 94 pharmaceutical and/or device companies across 1821 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in internal medicine. 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. 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.
Medicare Practice Summary
Medicare Utilization ↗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 (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. |
5,149 | $48 | $100 |
| 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. |
1,886 | $55 | $150 |
| Denosumab injection (Prolia/Xgeva) | 1,295 | $0 | $0 |
| 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. |
886 | $40 | $70 |
| Annual wellness visit, follow-up A follow-up annual wellness visit that includes a personalized prevention plan of service. |
863 | $67 | $200 |
| 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. |
649 | $19 | $149 |
| Vitamin B-12 injection An injection of vitamin B-12 (cyanocobalamin) with a dose of up to 1000 mcg. |
532 | $1 | $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. |
524 | $12 | $35 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
494 | $29 | $30 |
| 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. |
472 | $22 | $50 |
| Steroid injection (triamcinolone) A 10 mg injection of triamcinolone acetonide, a corticosteroid medication. This code specifies the drug and dosage administered. |
470 | $1 | $11 |
| Office visit for established patient An office visit for an existing patient that may not require the healthcare professional to be present. |
392 | $39 | $46 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
342 | $8 | $10 |
| Advance care planning, each additional 30 minutes This code covers each additional 30 minutes spent on advance care planning discussions beyond the initial session. It involves counseling patients and families about future healthcare preferences and end-of-life care options. |
329 | $16 | $150 |
| 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. |
249 | $1 | $20 |
| Intravenous hydration infusion, 31-60 minutes Administration of fluids into a vein to maintain hydration. This procedure involves an infusion lasting between 31 and 60 minutes. |
245 | $28 | $106 |
| Remote patient monitoring device, 30 days Initial setup of devices for remote monitoring of body functions with daily data transmission or alerts. This service covers the first 30 days of the monitoring period. |
224 | $42 | $126 |
| Additional hour of intravenous hydration This code represents each additional hour of intravenous fluid administration beyond the initial hour. It is used to bill for extended hydration therapy. |
205 | $11 | $105 |
| Joint injection, major joint Removal of fluid from a large joint and/or injection of medication into the joint space. |
156 | $50 | $140 |
| Physician evaluation for power mobility device A doctor's visit to assess and document the medical necessity for a power mobility device. |
130 | $7 | $25 |
| Home health plan of care certification Certification by a physician or allowed practitioner for Medicare-covered home health services under a home health plan of care. This includes contacting the home health agency and reviewing reports of patient status required by physicians. |
111 | $41 | $100 |
| Complete ultrasound of abdomen A diagnostic imaging test that uses sound waves to create detailed pictures of the organs and structures within the abdomen. |
109 | $104 | $150 |
| Electrocardiogram (EKG), 12-lead A standard heart rhythm test using at least 12 leads to record electrical activity. A healthcare provider interprets the results and provides a written report. |
103 | $12 | $60 |
| 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. |
64 | $101 | $350 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
56 | $169 | $300 |
| 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. |
53 | $126 | $198 |
| 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. |
49 | $82 | $300 |
| Destruction of precancerous skin growth, 1 Removal of a single precancerous skin growth. This procedure destroys abnormal skin cells to prevent them from developing into cancer. |
45 | $52 | $142 |
| Nursing facility visit, moderate complexity A follow-up visit by a healthcare provider at a nursing facility for an established patient. The visit involves moderate medical decision making and takes at least 30 minutes. |
45 | $71 | $180 |
| Dexamethasone injection (steroid) An injection of dexamethasone sodium phosphate, a corticosteroid medication, administered in a dose of 1 milligram. |
35 | $0 | $50 |
| Destruction of skin growths (warts/lesions), 1-14 This procedure involves the removal or destruction of one to fourteen skin growths. It is a minor surgical intervention performed on the skin surface. |
33 | $97 | $175 |
| Remote patient monitoring management, 20 min/month Management based on results from remote vital sign monitoring for the first 20 minutes per calendar month. |
33 | $43 | $102 |
| Ketorolac injection, per 15 mg An injection of ketorolac tromethamine, a nonsteroidal anti-inflammatory drug, administered in doses measured per 15 mg. |
27 | $0 | $60 |
| Influenza vaccine, quadrivalent, 0.5 ml dosage | 22 | $20 | $50 |
| 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. |
22 | $167 | $250 |
| Smoking cessation counseling, more than 10 minutes Intensive counseling session focused on helping patients quit smoking and tobacco use, lasting more than 10 minutes. |
21 | $29 | $50 |
| Ultrasound of arm or leg veins An ultrasound exam of the veins in the arm or leg. The test uses sound waves to check blood flow and may include compression and other maneuvers. |
20 | $163 | $250 |
| 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. |
19 | $204 | $308 |
| Simple repair of small facial wound A minor surgical procedure to close a small cut or wound on the face, ears, eyelids, nose, lips, or mouth that is 2.5 centimeters or less in length. |
18 | $89 | $150 |
| Home visit, established patient, low complexity A physician visits an existing patient at their residence to provide care involving a low level of medical decision making. The visit lasts at least 30 minutes. |
18 | $63 | $210 |
| Remote physiologic monitoring setup and education Initial setup of remote monitoring equipment and patient education on its use. |
18 | $18 | $38 |
| Skin tag removal, 1-15 tags This procedure involves the removal of one to fifteen skin tags. It is a minor surgical intervention to excise these benign growths from the skin. |
15 | $76 | $150 |
| Urinalysis, manual A manual laboratory examination of a urine sample to check for various substances and cells. |
15 | $3 | $20 |
| Tendon or ligament injection A procedure involving the injection of medication into a tendon or ligament. |
14 | $40 | $150 |
| New patient office visit (30-44 min) An initial office visit for a new patient lasting between 30 and 44 minutes. This code is used when the total time spent on the date of the encounter falls within this range. |
14 | $52 | $150 |
| Annual wellness visit, initial visit A yearly appointment to review your health and create a personalized prevention plan. This initial visit focuses on preventive care and health assessment. |
14 | $130 | $200 |
| Simple drainage of skin abscess A minor procedure to drain a localized collection of pus from the skin. The abscess is opened to allow the fluid to escape and promote healing. |
13 | $88 | $162 |
| Anoscopy A diagnostic exam of the anus using a thin, lighted tube called an endoscope to look inside. |
13 | $89 | $135 |
| Home visit, established patient, moderate complexity A home visit for an established patient involving moderate medical decision making. The visit requires at least 40 minutes of time if time is used to determine the level of service. |
13 | $45 | $180 |
| Initial preventive physical examination, new Medicare beneficiary A comprehensive preventive health visit for new Medicare beneficiaries during their first 12 months of enrollment. The service is conducted as a face-to-face visit and is limited to preventive care. |
13 | $144 | $200 |
| Destruction of 15 or more precancerous skin growths This procedure involves the removal or destruction of fifteen or more precancerous skin lesions. It is performed to treat abnormal skin cells that have the potential to develop into cancer. |
12 | $138 | $200 |
| Ultrasound of abdomen and pelvis blood flow An ultrasound exam that uses sound waves to visualize and assess blood flow through the arteries and veins in the abdomen and pelvis. |
12 | $130 | $200 |
| Inhalation treatment for acute airway obstruction, first hour This procedure involves administering inhaled medication to treat acute airway obstruction during the first hour of treatment. |
12 | $48 | $83 |
| Anti-nausea injection (ondansetron/Zofran) | 12 | $0 | $50 |
| Pap smear screening test A screening test to collect and prepare a cervical or vaginal sample for laboratory analysis. |
12 | $49 | $55 |
| Pelvic and clinical breast exam for cancer screening A physical examination of the pelvis and breasts to screen for cervical or vaginal cancer. This procedure involves a clinical assessment performed by a healthcare provider. |
11 | $43 | $50 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2024)
All-time payments by company (2018-2024) ›
Associated products mentioned in payments ›
Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians. Total industry engagement is in the top 4% for internal medicine in CA.
Geographic Context
1.8 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. Mai is a clinical cardiology specialist, with above-average Medicare volume (top 1% in CA), with low-engagement industry engagement in the top 4% 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
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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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