DENNIS GREWAL DO
NPI 1538556592
Internal Medicine - Cardiovascular Disease in Santa Ana, CA

Active since April 16, 2015PECOS EnrolledAccepts Medicare Assignment
700 N TUSTIN AVE, SANTA ANA, CA 92705(714) 245-1444(714) 245-1444 Get Directions Write a Review

NPPES record last updated: April 7, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Apr 7, 2025, Aug 30, 2022, Jul 26, 2018 and 1 more (4 updates tracked since 2018).

About Dennis Grewal Do NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DENNIS GREWAL DO (NPI 1538556592) is an individual cardiovascular disease provider in Santa Ana, California, licensed in California (15476) and active in the NPI registry since April 2015. He is enrolled in Medicare PECOS and is a graduate of Other (2015).

NPPES Registry Identity

NPI1538556592
Entity TypeIndividualMale
Primary Taxonomy207RC0000X
Provider Legal NameDENNIS GREWALCredential: DO
Location Address700 N TUSTIN AVESanta Ana, CA 92705-3602
Mailing Address700 N Tustin AveSanta Ana, CA 92705-3602 · (714) 245-1444 · Fax (714) 953-6604
Fax(714) 245-1444
Sole ProprietorNo
Medical School CMSOtherGraduated 2015
Enumeration DateApril 16, 2015
Last NPPES UpdateApril 7, 20254 updates tracked since enumeration
NPPES CertifiedApril 7, 2025
NPI 1538556592 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
License Licensed in CA · 15476
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
Also ListedInternal MedicineTaxonomy 207R00000X · License 20A15476 (CA)
700 N TUSTIN AVE, Santa Ana, CA 92705

Other Names 1

Former Name (1)Bachiter Grewal Md

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Dennis Grewal Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1456602028
PECOS Enrollment IDI20180920000704
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 27

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306
This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.
472 services456 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
104 services72 patients
Ultrasound of heart blood flow, valves and chambers 93320
An ultrasound of your heart, also known as an echocardiogram, is a test that uses sound waves to create detailed images of your heart. It helps doctors check the health of your heart's chambers, valves, and blood flow.
64 services64 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
64 services32 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000
An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.
54 services53 patients
Ultrasound of heart with color-depicted blood flow, rate and valve function 93325
An ultrasound of the heart, also known as an echocardiogram, uses sound waves to create pictures of your heart. It shows the structure, movement, and blood flow within your heart. This helps assess the heart's health and function, including the valves and rate.
54 services53 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92705 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 10

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Specialist
700 N TUSTIN AVE
SANTA ANA, CA 92705
Specialist
700 N TUSTIN AVE
SANTA ANA, CA 92705
Internal Medicine (Interventional Cardiology)
700 N TUSTIN AVE
SANTA ANA, CA 92705
Specialist
700 N TUSTIN AVE
SANTA ANA, CA 92705
Internal Medicine (Cardiovascular Disease)
700 N TUSTIN AVE
SANTA ANA, CA 92705
Internal Medicine (Interventional Cardiology)
700 N TUSTIN AVE
SANTA ANA, CA 92705
Specialist
700 N TUSTIN AVE
SANTA ANA, CA 92705
Specialist
700 N TUSTIN AVE
SANTA ANA, CA 92705

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Dennis Grewal's NPI number?

The NPI number for Dennis Grewal is 1538556592. It was assigned to this individual provider in the NPPES registry on April 16, 2015. The provider is also known as Bachiter Grewal MD.

Where is Dennis Grewal located?

Dennis Grewal practices at 700 N Tustin Ave, Santa Ana, CA 92705. The listed phone number is (714) 245-1444.

What is Dennis Grewal's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Dennis Grewal enrolled in Medicare?

Yes. Dennis Grewal is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Dennis Grewal was last updated on April 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.