Individual provider Active NPI

Ethel Mae Maccallum, OTR

  • Occupational Therapist
  • Katy, TX
National Provider Identifier
1336669720
Registry record updated Jul 3, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Occupational TherapistTaxonomy code 225X00000X
License
108431 Issued in TX
Practice address
810 S Mason Rd
Katy, TX 77450-3895
Phone
(281) 652-5200
Fax
(818) 357-2505
NPI assigned
Jun 26, 2017
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jul 3, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Occupational Therapist 225X00000X 108431 TX Primary
Occupational Therapist 225X00000X 27508 CA

Addresses

Primary practice location

810 S Mason Rd
Katy, TX 77450-3895

Mailing address

605 Pelican St
Magnolia, TX 77355-3421
Phone (817) 292-8787

Other practice location 1

14515 Briarhills Pkwy Ste 208
Houston, TX 77077-1034
Phone (832) 850-2733

Other practice location 2

4300 Long Beach Blvd Ste 700
Long Beach, CA 90807-2000
Phone (818) 894-2273

Other practice location 3

5806 Pacific Blvd
Huntington Park, CA 90255-2618
Phone (818) 894-2273

Other practice location 4

599 S Barranca Ave Ste 555
Covina, CA 91723-2791
Phone (818) 894-2273

Other practice location 5

6420 Wilshire Blvd Ste 600
Los Angeles, CA 90048-5521
Phone (818) 894-2273

Other practice location 6

3356 W Ball Rd Ste 219
Anaheim, CA 92804-3728
Phone (818) 894-2273

Other practice location 7

6320 Canoga Ave Fl 15
Woodland Hills, CA 91367-2563
Phone (818) 894-2273

Other practice location 8

8929 Aero Dr Ste E
San Diego, CA 92123-2231
Phone (877) 757-8353

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in TX, CA2 enrollments

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20241214000470 TX Practitioner - Occupational Therapist in Private Practice 3274069182 Reassigns benefits to 2 organizations
I20260313000000 CA Practitioner - Occupational Therapist in Private Practice 3274069182 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Occupational Therapist in Private Practice
Education
Other, 1983
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
All Care Physical Therapy, PCGroup PAC ID 5890972335, 174 clinicians

Practice addresses (Care Compare)

3031 Tisch Way 110 Plaza W
San Jose, CA 95128-2541
Phone (877) 757-8353

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

State licenses

LicenseStateTypeSpecialty
27508CAMDPsychologist

Practice roles

OrganizationSpecialtyStatusNew patients
All Care Physical Therapy, P.C. Occupational Therapist CurrentSince Jan 1, 2026 Accepting new patients
Slptele LLC Occupational Therapist CurrentSince Feb 9, 2026 Accepting new patients
Post Therapy LLC Occupational Therapist CurrentSince Nov 12, 2024 Accepting new patients

Locations

8550 Balboa Blvd
Ste 242
Northridge, CA 91325

3031 Tisch Way
Ste 110
San Jose, CA 95128
Phone (669) 200-4619

20333 State Highway 249
Ste 200
Houston, TX 77070
Phone (281) 748-9088

810 S Mason Rd
Ste 315
Katy, TX 77450
Phone (281) 652-5200

8008 Ashlane Way
Ste 120
The Woodlands, TX 77382
Phone (281) 914-4679

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.

NPI Registry JSON

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

{
    "created_epoch": "1498435200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783036800000",
    "number": "1336669720",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "605 PELICAN ST",
            "city": "MAGNOLIA",
            "state": "TX",
            "postal_code": "773553421",
            "telephone_number": "817-292-8787",
            "fax_number": "817-789-6849"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "810 S MASON RD",
            "city": "KATY",
            "state": "TX",
            "postal_code": "774503895",
            "telephone_number": "281-652-5200",
            "fax_number": "818-357-2505"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "14515 Briarhills Pkwy Ste 208",
            "address_purpose": "LOCATION",
            "city": "Houston",
            "state": "TX",
            "postal_code": "770771034",
            "country_code": "US",
            "telephone_number": "832-850-2733",
            "fax_number": "713-575-2031",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "4300 Long Beach Blvd Ste 700",
            "address_purpose": "LOCATION",
            "city": "Long Beach",
            "state": "CA",
            "postal_code": "908072000",
            "country_code": "US",
            "telephone_number": "818-894-2273",
            "fax_number": "818-357-2505",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "5806 Pacific Blvd",
            "address_purpose": "LOCATION",
            "city": "Huntington Park",
            "state": "CA",
            "postal_code": "902552618",
            "country_code": "US",
            "telephone_number": "818-894-2273",
            "fax_number": "818-357-2505",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "599 S Barranca Ave Ste 555",
            "address_purpose": "LOCATION",
            "city": "Covina",
            "state": "CA",
            "postal_code": "917232791",
            "country_code": "US",
            "telephone_number": "818-894-2273",
            "fax_number": "818-357-2505",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "6420 Wilshire Blvd Ste 600",
            "address_purpose": "LOCATION",
            "city": "Los Angeles",
            "state": "CA",
            "postal_code": "900485521",
            "country_code": "US",
            "telephone_number": "818-894-2273",
            "fax_number": "818-357-2505",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "3356 W Ball Rd Ste 219",
            "address_purpose": "LOCATION",
            "city": "Anaheim",
            "state": "CA",
            "postal_code": "928043728",
            "country_code": "US",
            "telephone_number": "818-894-2273",
            "fax_number": "818-357-2505",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "6320 Canoga Ave Fl 15",
            "address_purpose": "LOCATION",
            "city": "Woodland Hills",
            "state": "CA",
            "postal_code": "913672563",
            "country_code": "US",
            "telephone_number": "818-894-2273",
            "fax_number": "818-357-2505",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "8929 Aero Dr Ste E",
            "address_purpose": "LOCATION",
            "city": "San Diego",
            "state": "CA",
            "postal_code": "921232231",
            "country_code": "US",
            "telephone_number": "877-757-8353",
            "fax_number": "818-357-2505",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MACCALLUM",
        "first_name": "ETHEL",
        "middle_name": "MAE",
        "credential": "OTR",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2017-06-26",
        "last_updated": "2026-07-03",
        "certification_date": "2026-07-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "225X00000X",
            "taxonomy_group": "",
            "desc": "Occupational Therapist",
            "state": "TX",
            "license": "108431",
            "primary": true
        },
        {
            "code": "225X00000X",
            "taxonomy_group": "",
            "desc": "Occupational Therapist",
            "state": "CA",
            "license": "27508",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Katy, TX

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 3, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.