NPIMap

Individual provider Active NPI

Dennis Grewal, DO

  • Cardiovascular Disease Physician
  • Santa Ana, CA
National Provider Identifier
1538556592
Registry record updated Apr 7, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Cardiovascular Disease PhysicianTaxonomy code 207RC0000X
License
15476 Issued in CA
Practice address
700 N Tustin Ave
Santa Ana, CA 92705-3602
Phone
(714) 245-1444
Fax
(714) 245-1444
NPI assigned
Apr 16, 2015
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 7, 2025

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Cardiovascular Disease Physician 207RC0000X 15476 CA Primary
Internal Medicine Physician 207R00000X 20A15476 CA

Addresses

Primary practice location

700 N Tustin Ave
Santa Ana, CA 92705-3602

Mailing address

700 N Tustin Ave
Santa Ana, CA 92705-3602
Phone (714) 245-1444

Other practice location 1

16300 Sand Canyon Ave Ste 201
Irvine, CA 92618-3712
Phone (949) 753-9150

Other names 1

  • Bachiter Grewal Former name

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20180920000704 CA Practitioner - Cardiovascular Disease (Cardiology)Practitioner - Internal Medicine 1456602028 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Cardiovascular Disease (Cardiology)
Education
Other, 2015
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Cardiology Specialists of Orange CountyGroup PAC ID 7113830761, 9 clinicians

Practice addresses (Care Compare)

700 N Tustin Ave
Santa Ana, CA 92705-3602
Phone (714) 245-1444

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Osteopathy

State licenses

LicenseStateTypeSpecialty
20A15476CAMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Cardiology Specialists of Orange County CurrentSince May 1, 2025 Accepting new patients
Beaumont Radiology Services LLC CurrentSince Nov 10, 2024 Accepting new patients
Faculty Physicians and Surgeons of Llusm Past Accepting new patients

Locations

16300 Sand Canyon Ave
Ste 201
Irvine, CA 92618
Phone (949) 727-1818

16300 Sand Canyon Ave
Irvine, CA 92618
Phone (949) 753-1001

520 Superior Ave
Ste 255
Newport Beach, CA 92663
Phone (949) 720-9266

700 N Tustin Ave
Santa Ana, CA 92705
Phone (714) 245-1444

Interoperability endpoints

  • Direct secure messaging: dgrewal21094@epiclp.direct-ci.com
  • Direct secure messaging: bgrewal113413@direct.llu.edu
  • FHIR API: https://fhir4.healow.com/fhir/r4/DCIGAA

Organizations & group practices 3

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

Hospital & facility affiliations 6

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1429142400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1743984000000",
    "number": "1538556592",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "700 N TUSTIN AVE",
            "city": "SANTA ANA",
            "state": "CA",
            "postal_code": "927053602",
            "telephone_number": "714-245-1444",
            "fax_number": "714-953-6604"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "700 N TUSTIN AVE",
            "city": "SANTA ANA",
            "state": "CA",
            "postal_code": "927053602",
            "telephone_number": "714-245-1444",
            "fax_number": "714-245-1444"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "16300 Sand Canyon Ave Ste 201",
            "address_purpose": "LOCATION",
            "city": "Irvine",
            "state": "CA",
            "postal_code": "926183712",
            "country_code": "US",
            "telephone_number": "949-753-9150",
            "fax_number": "949-753-9152",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GREWAL",
        "first_name": "DENNIS",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2015-04-16",
        "last_updated": "2025-04-07",
        "certification_date": "2025-04-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "CA",
            "license": "15476",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "20A15476",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "BACHITER",
            "last_name": "GREWAL",
            "credential": "MD",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in Santa Ana, CA

Sources for this page

Verify at the official NPI Registry.