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Edit this profileBased in Tustin, CA, Maxwell Jen, MD is listed in the NPI registry under emergency medicine. Maxwell graduated from University of California, San Francisco School of Medicine in 2012. According to Medicare claims data, Maxwell cared for 6,639 Medicare patients across 11,574 services. The services billed most often include physician or allowed practitioner supervision of a patient receiving medicare-covered services provided by a participating home health agency (patient not present) requiring complex and multidisciplinary care modalities involving regular physician or allo, prolonged home or residence evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by the physician or quali, and advance care planning, first 30 minutes. NPI 1154688810 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
17400 IRVINE BLVD STE N
Tustin, CA 92780
333 City Blvd W Suite 640, Rt. 128-01
Orange, CA 92868
Within Emergency Medicine generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Bites & Stings
Brain & Nerves
Endocrine & Metabolic
Eye Care
Injuries & Trauma
Rashes & allergy
Skin & Infections
Urinary & Bladder
Women's Health
Abdomen & Digestion
Allergy & Immune
Allergy & Immunology
Blood & Circulation
Breathing
Digestion & Stomach
Ear, Nose & Throat
Environmental
Eye Emergency
General Emergency
Heart & Chest
Heart & Circulation
Heart & Lungs
Infections & Illness
Lungs & Breathing
Men's Health
Poisoning & Environmental
Poisoning & Toxins
Spine & Back
Urinary & Kidney
Abdominal Procedures
Breathing & Airway
Critical Care
Diagnostic testing
Diagnostics
Ear, Nose & Throat
Eye & ENT
Heart & Diagnostics
Imaging & Diagnostics
Injections & Vaccines
Kidney Care
Lung & Respiratory
Medications
Mental Health
Minor Procedures
Minor Trauma
Orthopedics
Poisoning & Toxicology
Specialized Care
Stroke & Vascular
Toxicology
Women's Health
Wound Care
Airway & Breathing
Anesthesia & Sedation
Digestive Care
Eye Care
Heart Care
Orthopedic Procedures
Supportive Care
11,574 services · 6,639 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Electrocardiogram (ecg) 1 to 3 leads with review by physician | Treatment | 93040 |
191 | Too few peers to compare |
| Ultrasound of leg arteries at rest and after exercise | Treatment | 93924 |
99 | Too few peers to compare |
| Administration of psychological or neuropsychological test by technician, each additional 30 minutes | Treatment | 96139 |
96 | Too few peers to compare |
| Measurement of nerve conduction using visual stimulation testing with report | Treatment | 95930 |
96 | Too few peers to compare |
| Administration of psychological or neuropsychological test by technician, first 30 minutes | Treatment | 96138 |
95 | Too few peers to compare |
| Evaluation of neuropsychological test, first hour | Treatment | 96132 |
95 | Too few peers to compare |
| Complete ultrasound study of arm and leg arteries | Treatment | 93923 |
87 | Too few peers to compare |
| Measurement of brain wave activity (eeg), digital analysis | Treatment | 95957 |
73 | Too few peers to compare |
| Measurement of brain wave activity (eeg), awake and drowsy | Treatment | 95816 |
73 | Too few peers to compare |
| Evaluation of brain response to sound for diagnosis of nervous system disorders with interpretation and report | Treatment | 92653 |
73 | Too few peers to compare |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Dr. Jen is an emergency physician in Tustin, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Emergency Medicine”.
NPI registry
Dr. Jen is listed at 17400 Irvine Blvd Ste N, Tustin, CA 92780. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (111) 111-1111. Contact the office directly to confirm availability and scheduling.
NPI registry
Dr. Jen's National Provider Identifier is 1154688810. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Dr. Jen attended University of California, San Francisco School of Medicine, graduating in 2012. This comes from the CMS National Downloadable File.
CMS public data
Dr. Jen has 14 years experience. Calculated from a graduation year of 2012, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Dr. Jen provides treatments such as electrocardiogram 1 to 3 leads with review by physician and ultrasound of leg arteries at rest and after exercise, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Jen. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.
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