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Edit this profileWhere to find Dennis Grewal, DO
- Santa Ana location main office
700 N Tustin Ave, Santa Ana, CA 92705 - Irvine location
16300 Sand Canyon Ave Ste 201, Irvine, CA 92618
About Dr. Grewal
Dennis Grewal, DO practices cardiovascular disease in Santa Ana, CA. Dennis is also listed as specializing in internal medicine. According to Medicare claims data, Dennis cared for 1,209 Medicare patients across 1,306 services. The services billed most often include ultrasound of heart with color-depicted blood flow, rate, direction and valve function, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes. The provider's National Provider Identifier (NPI) is 1538556592.
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
- (714) 245-1444
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
700 N TUSTIN AVE
Santa Ana, CA 92705
16300 Sand Canyon Ave Ste 201
Irvine, CA 92618
Conditions Commonly Evaluated or Treated
Within Cardiovascular Disease 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
Specialized cardiovascular care
Most searched conditions
Coronary and ischemic heart disease
Heart failure and cardiomyopathy
Heart rhythm
Symptoms and functional disorders
Valve and structural heart
Vascular and risk factors
Artery & vascular
Heart inflammation
Heart muscle
Heart valves
Vascular disease
Procedures & services
Advanced imaging
- Cardiac computed tomography
- Coronary artery calcium scan
- Transesophageal echocardiogram
- Cardiac magnetic resonance imaging
- Nuclear cardiac stress imaging
Catheter-based diagnosis and treatment
Heart & circulation
Life Support
Office and noninvasive testing
- Cardiology consultation
- Exercise stress test
- Pharmacologic cardiac stress test
- Stress echocardiogram
- Transthoracic echocardiogram
- Ambulatory blood-pressure monitoring
Structural heart
Most searched procedures
Consultations
Diagnostic testing
Diagnostics
Heart devices
- Biventricular Pacemaker (Cardiac Resynchronization Therapy)
- Implantable Loop Recorder (Cardiac Monitor Implant)
Heart imaging
Heart procedures
Heart rhythm procedures
Imaging
Implants
Recovery & rehabilitation
Vascular imaging
Procedures Most Often Billed to Medicare
1,306 services · 1,209 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| 3d radiographic procedure | Imaging | 76376 |
14 | Less often than most peers in Cardiovascular Disease |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | Treatment | 93306 |
472 | More often than most peers in Cardiovascular Disease |
| Ultrasound of heart blood flow, valves and chambers | Treatment | 93320 |
64 | More often than most peers in Cardiovascular Disease |
| Ultrasound of heart with color-depicted blood flow, rate and valve function | Treatment | 93325 |
54 | More often than most peers in Cardiovascular Disease |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
54 | Less often than most peers in Cardiovascular Disease |
| Heart muscle strain imaging | Treatment | 93356 |
50 | As often as other peers in Cardiovascular Disease |
| Ultrasound of heart with probe in esophagus, with report | Treatment | 93312 |
41 | More often than most peers in Cardiovascular Disease |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | Treatment | 93306 |
40 | More often than most peers in Cardiovascular Disease |
| Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes | Treatment | 99152 |
38 | As often as other peers in Cardiovascular Disease |
| 3d ultrasound imaging of heart for evaluation of heart structure performed during ultrasound imaging of congenital heart defects | Treatment | 93319 |
25 | As often as other peers in Cardiovascular Disease |
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 cardiologists at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 3
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 — 31 related providers in 4 groups
Other cardiologists in Santa Ana 7
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2015 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs 3d radiographic procedure 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Dr. Grewal specialize in?
Dr. Grewal is a cardiologist in Santa Ana, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Cardiovascular Disease”.
NPI registry
Where is Dr. Grewal located?
Dr. Grewal is listed at 700 N Tustin Ave, Santa Ana, CA 92705. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Grewal's phone number?
The number on file is (714) 245-1444. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Grewal's NPI number?
Dr. Grewal's National Provider Identifier is 1538556592. 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. Grewal go to medical school?
Dr. Grewal attended Other, graduating in 2015. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Grewal been practicing?
Dr. Grewal has 11 years experience. Calculated from a graduation year of 2015, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Grewal do most often?
According to Medicare billing data, Dr. Grewal performs imaging including 3d radiographic procedure; provides treatments such as ultrasound of heart with color-depicted blood flow, rate, direction and valve function and ultrasound of heart blood flow, valves and chambers, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Grewal confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Grewal. If this is you, claiming it is free.
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