Physician Profile
Based in Baltimore, MD, Christian A. Merlo, M.D. is listed in the NPI registry under critical care (intensivists). Christian graduated from Georgetown University School of Medicine in 1996. Christian is also listed as specializing in pulmonary disease and critical care medicine. Medicare claims data shows Christian provided 361 services to 158 patients. The services billed most often include subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes, established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more, and initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes. NPI 1538118393 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.
600 N WOLFE ST
Baltimore, MD 21287
Within Critical Care 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.
Blood & metabolism
Brain & nerve
Brain & Nervous System
Breathing & Lungs
Digestive emergencies
Environmental emergencies
Heart & Circulation
Heart & vascular
Infection & Sepsis
Infections
Injury & trauma
Lung & breathing
Medication reactions
Metabolic Emergencies
Muscle & kidney
Organ Failure
Pregnancy emergencies
Recovery
Substance emergencies
Toxicity & Trauma
Airway & Breathing
Airway procedures
Brain procedures
Breathing support
Consultation & Recovery
Digestive procedures
Emergency surgery
Fluid Drainage
Heart procedures
Heart support
ICU recovery
Lab tests & monitoring
Life Support
Medication therapies
Medications & Infusions
Monitoring
Nutrition & Digestion
Nutrition support
Organ Support
Vascular Access
361 services · 158 patients · 5 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
221 | More often than most peers in Critical Care (Intensivists) |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
91 | More often than most peers in Critical Care (Intensivists) |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
21 | Less often than most peers in Critical Care (Intensivists) |
| Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or | Billing code | G2212 |
14 | Less often than most peers in Critical Care (Intensivists) |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
14 | Less often than most peers in Critical Care (Intensivists) |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Christian A. Merlo is a critical care (intensivists) in Baltimore, MD. That is the designation recorded for this NPI in the federal registry.
NPI registry
Christian A. Merlo is listed at 600 N Wolfe St, Baltimore, MD 21287. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (410) 550-5864. Contact the office directly to confirm availability and scheduling.
NPI registry
Christian A. Merlo's National Provider Identifier is 1538118393. 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
Christian A. Merlo attended Georgetown University School of Medicine, graduating in 1996. This comes from the CMS National Downloadable File.
CMS public data
Christian A. Merlo has 30 years experience. Calculated from a graduation year of 1996, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Christian A. Merlo 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
Not yet. This profile is built from public federal data and has not been confirmed by Christian A. Merlo. If this is you, claiming it is free.
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