Are you Mary-Stewart Willsie, D.O.? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 4755 Ogletown Stanton Rd, Newark, DE 19718
About Dr. Willsie
Mary-Stewart Willsie, D.O. practices emergency medicine in Newark, DE. Mary-Stewart is a 2009 graduate of Kansas City University of Physicians and Surgeons. Medicare claims data shows Mary-Stewart provided 613 services to 601 patients. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, urinalysis, manual test, and new patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more. The provider's National Provider Identifier (NPI) is 1780818377.
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
- (130) 273-3100
- Email not available
Practice Locations
4755 OGLETOWN STANTON RD
Newark, DE 19718
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
Abdomen & Digestion
- Appendicitis
- Lower gastrointestinal bleeding
- Vomiting or throwing up blood
Allergy & Immune
Allergy & Immunology
- Severe Allergic Reaction
Bites & Stings
- Snake Bite or Venomous Sting
- Spider or insect sting reaction
Blood & Circulation
Brain & Nerves
- Delirium
- Fainting and syncope
- Seizure in Child
- Severe headache or sudden migraine
- Status epilepticus
- Stroke
- Transient ischemic attack
Breathing
- Choking or swallowed object
- Coughing up blood
- Severe asthma attack
- Shortness of breath
Digestion & Stomach
Ear, Nose & Throat
Endocrine & Metabolic
- Dangerous high blood sugar
- Dangerously low blood sugar
Environmental
Eye Care
- Open-globe eye injury
Eye Emergency
General Emergency
- Severe dehydration
- Uncontrolled bleeding
Heart & Chest
Heart & Circulation
Heart & Lungs
Infections & Illness
Injuries & Trauma
- Animal or dog bite
- Bone fractures
- Deep cut or wound
- Dislocated joint
- Severe burn
- Sprains and muscle strains
- Traumatic brain injury
Lungs & Breathing
Men's Health
- Testicular torsion
Poisoning & Environmental
Poisoning & Toxins
Skin & Infections
- Skin abscess or boil
Spine & Back
Urinary & Bladder
- Inability to pee
Urinary & Kidney
Women's Health
- Ectopic pregnancy
- Heavy vaginal bleeding
Procedures & services
Abdominal Procedures
Airway & Breathing
Anesthesia & Sedation
Breathing & Airway
Critical Care
Diagnostics
- Lumbar puncture
- Rapid blood work
Digestive Care
Ear, Nose & Throat
- Nasal packing for nosebleed
Eye & ENT
- Eye-pressure measurement
- Foreign Object Removal from Eye
- Superficial foreign-body removal
Eye Care
- Emergency Eye Flushing
Heart & Diagnostics
Heart Care
Imaging & Diagnostics
- Emergency CT scan
- Emergency MRI scan
- Emergency ultrasound
- Emergency X-ray
Injections & Vaccines
- Rabies shot series
- Tetanus shot
Kidney Care
- Emergency dialysis
Lung & Respiratory
- Chest Needle Decompression
- Draining lung fluid
Medications
- Emergency epinephrine injection
- IV medication for severe nausea
- IV medication for severe pain
Mental Health
- Emergency psychiatric evaluation
Minor Procedures
- Fishhook or embedded splinter removal
- Incision and drainage of an abscess
- Nasal cautery for nosebleeds
- Tick Removal
- Urinary catheter insertion
Minor Trauma
- Stuck ring removal
Orthopedic Procedures
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
Supportive Care
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
Procedures Most Often Billed to Medicare
613 services · 601 patients · 12 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| X-ray of chest, 2 views | Imaging | 71046 |
46 | More often than most peers in Emergency Medicine |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
43 | More often than most peers in Emergency Medicine |
| Administration of vaccine | Treatment | 90471 |
19 | More often than most peers in Emergency Medicine |
| Diphtheria, tetanus, and acellular pertussis vaccine (7 years or older) | Treatment | 90715 |
11 | Less often than most peers in Emergency Medicine |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
267 | More often than most peers in Emergency Medicine |
| Urinalysis, manual test | Lab test | 81002 |
53 | More often than most peers in Emergency Medicine |
| New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more | Office visit | 99202 |
47 | More often than most peers in Emergency Medicine |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
46 | As often as other peers in Emergency Medicine |
| Detection test by immunoassay with direct visual observation for streptococcus, group a (strep) | Lab test | 87880 |
27 | As often as other peers in Emergency Medicine |
| Detection test by immunoassay with direct visual observation for influenza virus | Lab test | 87804 |
26 | 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.
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 4
Same specialty, same street address — most likely the same department or group.
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.
Other emergency physicians in Newark 5
Same specialty, same city.
More connections — 19 related providers in 3 groups
Trained at Kansas City University of Physicians and Surgeons 8
Other providers in the same specialty who trained at the same institution.
Class of 2009 at Kansas City University of Physicians and Surgeons 8
Providers who graduated from the same medical school in the same year.
Also performs X-ray of chest, 2 views 3
Providers in DE who bill this service to Medicare most often.
Common questions
What kind of doctor is Mary-Stewart Willsie?
Mary-Stewart Willsie is an emergency physician in Newark, DE. That is the designation recorded for this NPI in the federal registry, where it is listed as “Emergency Medicine”.
NPI registry
What is Mary-Stewart Willsie's address?
Mary-Stewart Willsie is listed at 4755 Ogletown Stanton Rd, Newark, DE 19718. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Mary-Stewart Willsie?
The number on file is (130) 273-3100. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Mary-Stewart Willsie?
Mary-Stewart Willsie's National Provider Identifier is 1780818377. 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 Mary-Stewart Willsie train?
Mary-Stewart Willsie attended Kansas City University of Physicians and Surgeons, graduating in 2009. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Mary-Stewart Willsie have?
Mary-Stewart Willsie has 17 years experience. Calculated from a graduation year of 2009, reported in the CMS National Downloadable File.
CMS public data
What procedures does Mary-Stewart Willsie perform?
According to Medicare billing data, Mary-Stewart Willsie performs imaging including x-ray of chest, 2 views; provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report and administration of vaccine, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Mary-Stewart Willsie's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Mary-Stewart Willsie. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.