Are you Selwyn E. Mahon, M.D.? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileWhere to find Selwyn E. Mahon, M.D.
- Tamuning location main office
850 Gov. Carlos Camacho Road, Guam Memorial Hospital Authority, Tamuning, GU 96913 - Woonsocket location
115 Cass Ave, Woonsocket, RI 02895
About Dr. Mahon
Selwyn E. Mahon, M.D. practices emergency medicine in Tamuning, GU. Selwyn is a 1990 graduate of Howard University College of Medicine. Medicare claims data shows Selwyn provided 168 services to 166 patients. The services billed most often include emergency department visit with moderate level of medical decision making, emergency department visit with high level of medical decision making, and emergency department visit with low level of medical decision making. The provider's National Provider Identifier (NPI) is 1992816169.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (671) 647-2350
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
850 GOV. CARLOS CAMACHO ROAD GUAM MEMORIAL HOSPITAL AUTHORITY
Tamuning, GU 96913
115 Cass Ave
Woonsocket, RI 02895
Conditions Commonly Evaluated or Treated
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.
Conditions
Bites & Stings
- Spider or insect sting reaction
- Snake Bite or Venomous Sting
Brain & Nerves
- Delirium
- Stroke
- Fainting and syncope
- Seizure in Child
- Severe headache or sudden migraine
- Status epilepticus
- Transient ischemic attack
Endocrine & Metabolic
- Dangerously low blood sugar
- Dangerous high blood sugar
Eye Care
- Open-globe eye injury
Injuries & Trauma
- Animal or dog bite
- Bone fractures
- Deep cut or wound
- Dislocated joint
- Severe burn
- Sprains and muscle strains
- Traumatic brain injury
Rashes & allergy
- Poison Ivy
Skin & Infections
- Skin abscess or boil
Urinary & Bladder
- Inability to pee
Women's Health
- Heavy vaginal bleeding
- Ectopic pregnancy
Abdomen & Digestion
- Appendicitis
- Lower gastrointestinal bleeding
- Vomiting or throwing up blood
Allergy & Immune
- Angioedema
Allergy & Immunology
- Severe Allergic Reaction
Blood & Circulation
- Deep vein thrombosis
Breathing
- Choking or swallowed object
- Coughing up blood
- Severe asthma attack
- Shortness of breath
Digestion & Stomach
- Abdominal Pain
- Acute gallbladder inflammation
- Bowel obstruction
Ear, Nose & Throat
- Nosebleeds
Environmental
- Heat stroke
- Hypothermia and frostbite
Eye Emergency
- Corneal abrasion
General Emergency
- Severe dehydration
- Uncontrolled bleeding
Heart & Chest
- Acute coronary syndrome
- Heart palpitations
Heart & Circulation
- Dangerous high blood pressure
Heart & Lungs
- Blood Clot in Lung
Infections & Illness
- High fever
- Sepsis or blood infection
Lungs & Breathing
- Collapsed lung
Men's Health
- Testicular torsion
Poisoning & Environmental
- Smoke Inhalation
Poisoning & Toxins
- Drug overdose or poisoning
Spine & Back
- Severe back pain
Urinary & Kidney
- Kidney stones
Procedures & services
Abdominal Procedures
- Paracentesis
Breathing & Airway
- Emergency intubation
- Breathing Treatment
Critical Care
- Central line placement
- Chest tube insertion
- CPR and defibrillation
- Blood transfusion
Diagnostic testing
- Rapid flu test
Diagnostics
- Rapid blood work
- Lumbar puncture
Ear, Nose & Throat
- Nasal packing for nosebleed
Eye & ENT
- Superficial foreign-body removal
- Eye-pressure measurement
- Foreign Object Removal from Eye
Heart & Diagnostics
- Cardioversion for rapid heartbeat
- EKG
Imaging & Diagnostics
- Emergency MRI scan
- Emergency CT scan
- Emergency ultrasound
- Emergency X-ray
Injections & Vaccines
- Rabies shot series
- Tetanus shot
Kidney Care
- Emergency dialysis
Lung & Respiratory
- Draining lung fluid
- Chest Needle Decompression
Medications
- IV medication for severe nausea
- IV medication for severe pain
- Emergency epinephrine injection
Mental Health
- Emergency psychiatric evaluation
Minor Procedures
- Nasal cautery for nosebleeds
- Tick Removal
- Urinary catheter insertion
- Fishhook or embedded splinter removal
- Incision and drainage of an abscess
Minor Trauma
- Stuck ring removal
Orthopedics
- Popping a dislocated joint back in place
- Splinting and temporary casting
Poisoning & Toxicology
- Antivenom treatment
Specialized Care
- Sexual assault forensic exam
Stroke & Vascular
- Clot busting medication for stroke
Toxicology
- Narcan overdose reversal
- Stomach pumping or activated charcoal
Women's Health
- Emergency pelvic exam
Wound Care
- Burn dressing and care
- Skin glue for cuts
- Stitches and Laceration Repair
- Wound cleaning and debridement
- Wound stapling
Airway & Breathing
- Emergency surgical airway
Anesthesia & Sedation
- Moderate dental sedation
Digestive Care
- Urgent upper endoscopy
Eye Care
- Emergency Eye Flushing
Heart Care
- Temporary Pacemaker Placement
Orthopedic Procedures
- Joint injection or aspiration
Supportive Care
- IV fluids
Procedures Most Often Billed to Medicare
168 services · 166 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Emergency department visit with moderate level of medical decision making | Office visit | 99284 |
89 | More often than most peers in Emergency Medicine |
| Emergency department visit with high level of medical decision making | Office visit | 99285 |
56 | Less often than most peers in Emergency Medicine |
| Emergency department visit with low level of medical decision making | Office visit | 99283 |
23 | As often as other peers in Emergency Medicine |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other emergency physicians at this location 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 19 related providers in 3 groups
Other emergency physicians in Tamuning 3
Same specialty, same city.
Trained at Howard University College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1990 at Howard University College of Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Selwyn E. Mahon specialize in?
Selwyn E. Mahon is an emergency physician in Tamuning, GU. That is the designation recorded for this NPI in the federal registry, where it is listed as “Emergency Medicine”.
NPI registry
Where is Selwyn E. Mahon located?
Selwyn E. Mahon is listed at 850 Gov. Carlos Camacho Road Guam Memorial Hospital Authority, Tamuning, GU 96913. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Selwyn E. Mahon's phone number?
The number on file is (671) 647-2350. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Selwyn E. Mahon?
Selwyn E. Mahon's National Provider Identifier is 1992816169. 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
Where did Selwyn E. Mahon train?
Selwyn E. Mahon attended Howard University College of Medicine, graduating in 1990. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Selwyn E. Mahon have?
Selwyn E. Mahon has 36 years experience. Calculated from a graduation year of 1990, reported in the CMS National Downloadable File.
CMS public data
What does Selwyn E. Mahon do most often?
According to Medicare billing data, Selwyn E. Mahon the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Selwyn E. Mahon's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Selwyn E. Mahon. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.