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Edit this profileAt a glance
- 817 S Madison Ave, Pasadena, CA 91106
About Dr. Dimassa
Based in Pasadena, CA, Giancarlo P. Dimassa, MD is listed in the NPI registry under emergency medicine. Giancarlo graduated from University of California, Geffen School of Medicine in 2001. Giancarlo is also listed as specializing in preventive medicine. Medicare claims data shows Giancarlo provided 1,260 services to 1,216 patients. The services billed most often include routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only, emergency department visit with high level of medical decision making, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. NPI 1255370797 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
- (310) 753-0885
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
817 S MADISON AVE
Pasadena, CA 91106
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
Brain & Nerves
- Delirium
- Stroke
- Fainting and syncope
- Seizure in Child
- Severe headache or sudden migraine
- Status epilepticus
- Transient ischemic attack
Endocrine & Metabolic
Eye Care
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
Skin & Infections
Urinary & Bladder
Women's Health
Abdomen & Digestion
Allergy & Immune
Allergy & Immunology
Blood & Circulation
Breathing
Digestion & Stomach
Ear, Nose & Throat
Environmental
Eye Emergency
General Emergency
Heart & Chest
Heart & Circulation
Heart & Lungs
Infections & Illness
Lungs & Breathing
Men's Health
Poisoning & Environmental
Poisoning & Toxins
Spine & Back
Urinary & Kidney
Procedures & services
Abdominal Procedures
Breathing & Airway
Critical Care
Diagnostic testing
Diagnostics
Ear, Nose & Throat
Eye & ENT
Heart & Diagnostics
Imaging & Diagnostics
Injections & Vaccines
Kidney Care
Lung & Respiratory
Medications
Mental Health
Minor Procedures
- Nasal cautery for nosebleeds
- Tick Removal
- Urinary catheter insertion
- Fishhook or embedded splinter removal
- Incision and drainage of an abscess
Minor Trauma
Orthopedics
Poisoning & Toxicology
Specialized Care
Stroke & Vascular
Toxicology
Women's Health
Wound Care
- Burn dressing and care
- Skin glue for cuts
- Stitches and Laceration Repair
- Wound cleaning and debridement
- Wound stapling
Airway & Breathing
Anesthesia & Sedation
Digestive Care
Eye Care
Heart Care
Orthopedic Procedures
Supportive Care
Procedures Most Often Billed to Medicare
1,260 services · 1,216 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
39 | As often as other peers in Emergency Medicine |
| X-ray of chest, 1 view | Imaging | 71045 |
50 | More often than most peers in Emergency Medicine |
| X-ray of chest, 1 view | Imaging | 71045 |
39 | More often than most peers in Emergency Medicine |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | Treatment | 93010 |
130 | More often than most peers in Emergency Medicine |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
48 | More often than most peers in Emergency Medicine |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
38 | As often as other peers in Emergency Medicine |
| Inhalation treatment for airway obstruction or sputum production | Treatment | 94640 |
17 | As often as other peers in Emergency Medicine |
| Injection, ketorolac tromethamine, per 15 mg | Drug given | J1885 |
29 | Less often than most peers in Emergency Medicine |
| Emergency department visit with high level of medical decision making | Office visit | 99285 |
120 | As often as other 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 |
84 | 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.
Other emergency physicians in Pasadena 8
Same specialty, same city.
Trained at University of California, Geffen School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2001 at University of California, Geffen School of Medicine 8
Providers who graduated from the same medical school in the same year.
More connections — 8 related providers in 1 group
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Dr. Dimassa specialize in?
Dr. Dimassa is an emergency physician in Pasadena, 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. Dimassa located?
Dr. Dimassa is listed at 817 S Madison Ave, Pasadena, CA 91106. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Dimassa's phone number?
The number on file is (310) 753-0885. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Dimassa?
Dr. Dimassa's National Provider Identifier is 1255370797. 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. Dimassa go to medical school?
Dr. Dimassa attended University of California, Geffen School of Medicine, graduating in 2001. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Dimassa have?
Dr. Dimassa has 25 years experience. Calculated from a graduation year of 2001, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Dimassa do most often?
According to Medicare billing data, Dr. Dimassa performs procedures including insertion of needle into vein for collection of blood sample; 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 and routine electrocardiogram using at least 12 leads with interpretation and report, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Dimassa's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Dimassa. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.