Physician Profile
Based in Los Alamitos, CA, Kirsten K. Calder, MD is listed in the NPI registry under emergency medicine. Kirsten graduated from University of Texas Southwestern Medical School at Dallas in 1994. According to Medicare claims data, Kirsten cared for 506 Medicare patients across 526 services. The services billed most often include emergency department visit with high level of medical decision making, routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only, and x-ray of chest, 1 view. NPI 1952330938 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.
3751 KATELLA AVE
Los Alamitos, CA 90720
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.
Abdomen & Digestion
Allergy & Immune
Allergy & Immunology
Bites & Stings
Blood & Circulation
Brain & Nerves
Breathing
Digestion & Stomach
Ear, Nose & Throat
Endocrine & Metabolic
Environmental
Eye Care
Eye Emergency
General Emergency
Heart & Chest
Heart & Circulation
Heart & Lungs
Infections & Illness
Injuries & Trauma
Lungs & Breathing
Men's Health
Poisoning & Environmental
Poisoning & Toxins
Skin & Infections
Spine & Back
Urinary & Bladder
Urinary & Kidney
Women's Health
Abdominal Procedures
Airway & Breathing
Anesthesia & Sedation
Breathing & Airway
Critical Care
Diagnostics
Digestive Care
Ear, Nose & Throat
Eye & ENT
Eye Care
Heart & Diagnostics
Heart Care
Imaging & Diagnostics
Injections & Vaccines
Kidney Care
Lung & Respiratory
Medications
Mental Health
Minor Procedures
Minor Trauma
Orthopedic Procedures
Orthopedics
Poisoning & Toxicology
Specialized Care
Stroke & Vascular
Supportive Care
Toxicology
Women's Health
Wound Care
526 services · 506 patients · 5 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| X-ray of chest, 1 view | Imaging | 71045 |
45 | More often than most peers in Emergency Medicine |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | Treatment | 93010 |
198 | More often than most peers in Emergency Medicine |
| Emergency department visit with high level of medical decision making | Office visit | 99285 |
235 | More often than most peers in Emergency Medicine |
| Emergency department visit with moderate level of medical decision making | Office visit | 99284 |
33 | Less often than most peers in Emergency Medicine |
| Critical care, first 30-74 minutes | Office visit | 99291 |
15 | Less often than most peers in Emergency Medicine |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Dr. Calder is an emergency physician in Los Alamitos, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Emergency Medicine”.
NPI registry
Dr. Calder is listed at 3751 Katella Ave, Los Alamitos, CA 90720. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (562) 598-1311. Contact the office directly to confirm availability and scheduling.
NPI registry
Dr. Calder's National Provider Identifier is 1952330938. 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. Calder attended University of Texas Southwestern Medical School at Dallas, graduating in 1994. This comes from the CMS National Downloadable File.
CMS public data
Dr. Calder has 32 years experience. Calculated from a graduation year of 1994, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Dr. Calder performs imaging including x-ray of chest, 1 view; provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report only, 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. Calder. If this is you, claiming it is free.
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