Individual provider Active NPI

Mark E Reader, D.O.

  • Otolaryngology Physician
  • Porterville, CA
National Provider Identifier
1649363334
Registry record updated Nov 12, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Otolaryngology PhysicianTaxonomy code 207Y00000X
License
20A8888 Issued in CA
Practice address
590 W Putnam Ave
Porterville, CA 93257-3257
Phone
(559) 781-3700
NPI assigned
Oct 2, 2006
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Nov 12, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Otology & Neurotology Physician 207YX0901X 20A8888 CA
Otolaryngology Physician 207Y00000X 20A8888 CA Primary

Addresses

Primary practice location

590 W Putnam Ave
Porterville, CA 93257-3257

Mailing address

390 N. Pearson Drive
Porterville, CA 93257
Phone (559) 791-1779

Other practice location 1

390 Pearson Dr
Porterville, CA 93257-3368
Phone (559) 781-3700

Other identifiers 7

IdentifierTypeStateIssuer
421387379OtherTRICARE
4536696OtherAETNA
020A88880OtherBLUE SHIELD
421387379OtherBLUE CROSS
4213873790OtherADVANTEK
421387379AOtherHEALTHNET
00AX88880MedicaidCA

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20050810001011 CA Practitioner - Otolaryngology 7416986369 Reassigns benefits to 1 organization
Receives reassigned benefits from 2 practitioners
Practice locations: Porterville, CA; Visalia, CA

Care Compare profile

Medicare Care Compare
Specialty
Otolaryngology
Education
At Still University of Health Sciences, College of Osteo Med, Kirksville, 1987
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Sequoia Healthcare AllianceGroup PAC ID 7911319645, 13 clinicians

Practice addresses (Care Compare)

390 Pearson Dr
Porterville, CA 93257-3368
Phone (559) 781-3700

Hospital & facility affiliations

  • Sierra View Medical Center Hospital, Porterville, CA, CCN 050261

Merit-based Incentive Payment System (MIPS)

Final score
0 of 100Reported as individual
Quality
0
Improvement activities
0
Cost
0

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
8888CAMDOccupational Therapist

Practice roles

OrganizationSpecialtyStatusNew patients
Sequoia Healthcare Alliance CurrentSince Jun 25, 2025 Accepting new patients
Sequoia Family Medical Center, Inc Past Accepting new patients
Kaweah Delta Health Care District Past Accepting new patients
Sierra View Local Health Care District Past Accepting new patients
Mark E. Reader PastSince Jan 1, 1990 Accepting new patients

Locations

585 W Putnam Ave
Porterville, CA 93257
Phone (559) 359-4415

590 W Putnam Ave
Ste 9
Porterville, CA 93257
Phone 55978141001022

590 W Putnam Ave
Porterville, CA 93257
Phone (559) 781-3700

390 Pearson Dr
Porterville, CA 93257
Phone (559) 781-3700

Practitioners & affiliated clinicians

Practitioners 2

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

Organizations & group practices 5

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 1

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": "1159747200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1762905600000",
    "number": "1649363334",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "390 N. PEARSON DRIVE",
            "city": "PORTERVILLE",
            "state": "CA",
            "postal_code": "93257",
            "telephone_number": "559-791-1779",
            "fax_number": "559-791-9353"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "590 W PUTNAM AVE",
            "city": "PORTERVILLE",
            "state": "CA",
            "postal_code": "932573257",
            "telephone_number": "559-781-3700"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "390 Pearson Dr",
            "address_purpose": "LOCATION",
            "city": "Porterville",
            "state": "CA",
            "postal_code": "932573368",
            "country_code": "US",
            "telephone_number": "559-781-3700",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "READER",
        "first_name": "MARK",
        "middle_name": "E",
        "credential": "D.O.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-10-02",
        "last_updated": "2025-11-12",
        "certification_date": "2025-11-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207YX0901X",
            "taxonomy_group": "",
            "desc": "Otolaryngology, Otology & Neurotology",
            "state": "CA",
            "license": "20A8888",
            "primary": false
        },
        {
            "code": "207Y00000X",
            "taxonomy_group": "",
            "desc": "Otolaryngology",
            "state": "CA",
            "license": "20A8888",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "TRICARE",
            "identifier": "421387379",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "AETNA",
            "identifier": "4536696",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUE SHIELD",
            "identifier": "020A88880",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUE CROSS",
            "identifier": "421387379",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "ADVANTEK",
            "identifier": "4213873790",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "HEALTHNET",
            "identifier": "421387379A",
            "state": null
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00AX88880",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Porterville, CA

Sources for this page

Verify at the official NPI Registry.