Are you Christopher J. Markus, D.O? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 1 Medical Plaza Dr, Roseville, CA 95661
About Dr. Markus
Based in Roseville, CA, Christopher J. Markus, D.O is listed in the NPI registry under emergency medicine. Medicare claims data shows Christopher provided 136 services to 134 patients. The services billed most often include initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes, initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes, and initial hospital care with same-day admission and discharge with high level of medical decision making, per day, if using time, at least 85 minutes. NPI 1891717427 identifies this record in the national registry.
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
- (916) 781-1000
- Email not available
Practice Locations
1 MEDICAL PLAZA DR
Roseville, CA 95661
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
- Acute coronary syndrome
- Heart palpitations
Heart & Circulation
Heart & Lungs
Infections & Illness
- High fever
- Sepsis or blood infection
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
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
136 services · 134 patients · 5 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
53 | More often than most peers in Emergency Medicine |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
31 | More often than most peers in Emergency Medicine |
| Initial hospital care with same-day admission and discharge with high level of medical decision making, per day, if using time, at least 85 minutes | Office visit | 99236 |
25 | More often than most peers in Emergency Medicine |
| Initial hospital care with same-day admission and discharge with moderate level of medical decision making, per day, if using time, at least 70 minutes | Office visit | 99235 |
15 | More often than most peers in Emergency Medicine |
| Hospital discharge day management, more than 30 minutes | Office visit | 99239 |
12 | 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 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 2
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 — 23 related providers in 3 groups
Other emergency physicians in Roseville 7
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1993 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Christopher J. Markus?
Christopher J. Markus is an emergency physician in Roseville, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Emergency Medicine”.
NPI registry
What is Christopher J. Markus's address?
Christopher J. Markus is listed at 1 Medical Plaza Dr, Roseville, CA 95661. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Christopher J. Markus?
The number on file is (916) 781-1000. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Christopher J. Markus?
Christopher J. Markus's National Provider Identifier is 1891717427. 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 Christopher J. Markus train?
Christopher J. Markus attended Other, graduating in 1993. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Christopher J. Markus have?
Christopher J. Markus has 33 years experience. Calculated from a graduation year of 1993, reported in the CMS National Downloadable File.
CMS public data
What procedures does Christopher J. Markus perform?
According to Medicare billing data, Christopher J. Markus 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 Christopher J. Markus's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Christopher J. Markus. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.