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Edit this profileWhere to find William S. Clark, DO
- Escalon location main office
1631 4Th St, Escalon, CA 95320 - Modesto location
1235 McHenry Ave, Modesto, CA 95350
About Dr. Clark
William S. Clark, DO practices emergency medicine in Escalon, CA. William is a 2000 graduate of Chicago College of Osteopathy. William is also listed as specializing in addiction & substance abuse counselor. According to Medicare claims data, William cared for 891 Medicare patients across 1,030 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 emergency department visit with moderate level of medical decision making. The provider's National Provider Identifier (NPI) is 1770690430.
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
- (209) 838-3434
- Email not available
Practice Locations
1631 4TH ST
Escalon, CA 95320
1235 McHenry Ave
Modesto, CA 95350
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
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
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
1,030 services · 891 patients · 6 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of non-tunneled central venous tube for infusion (5 years or older) | Procedure | 36556 |
11 | Less often than most peers in Emergency Medicine |
| X-ray of chest, 1 view | Imaging | 71045 |
26 | As often as other peers in Emergency Medicine |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | Treatment | 93010 |
336 | More than most peers in Emergency Medicine |
| Emergency department visit with high level of medical decision making | Office visit | 99285 |
437 | More than most peers in Emergency Medicine |
| Emergency department visit with moderate level of medical decision making | Office visit | 99284 |
143 | More than most peers in Emergency Medicine |
| Critical care, first 30-74 minutes | Office visit | 99291 |
77 | More 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.
Trained at Chicago College of Osteopathy 8
Other providers in the same specialty who trained at the same institution.
Class of 2000 at Chicago College of Osteopathy 5
Providers who graduated from the same medical school in the same year.
Also performs Insertion of non-tunneled central venous tube for infusion (5 years or older) 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Dr. Clark specialize in?
Dr. Clark is an emergency physician in Escalon, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Emergency Medicine”.
NPI registry
Where is Dr. Clark located?
Dr. Clark is listed at 1631 4Th St, Escalon, CA 95320. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Clark's phone number?
The number on file is (209) 838-3434. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Clark's NPI number?
Dr. Clark's National Provider Identifier is 1770690430. 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 Dr. Clark go to medical school?
Dr. Clark attended Chicago College of Osteopathy, graduating in 2000. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Clark been practicing?
Dr. Clark has 26 years experience. Calculated from a graduation year of 2000, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Clark do most often?
According to Medicare billing data, Dr. Clark performs procedures including insertion of non-tunneled central venous tube for infusion; reads or performs imaging such as 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
Has Dr. Clark confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Clark. If this is you, claiming it is free.
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