NPIMap

Individual provider Active NPI

Joseph James Merlo Jr., M.D., PH.D.

  • Clinical Pathology Physician
  • Danville, PA
National Provider Identifier
1225327596
Registry record updated Nov 5, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical Pathology PhysicianTaxonomy code 207ZC0006X
License
MD491207 Issued in PA
Practice address
100 N Academy Ave
Danville, PA 17822-9800
Phone
(570) 271-6338
Fax
(570) 271-6105
NPI assigned
Apr 7, 2011
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Nov 5, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Clinical Pathology Physician 207ZC0006X MD491207 PA Primary

Addresses

Primary practice location

100 N Academy Ave
Danville, PA 17822-9800

Mailing address

100 N Academy Ave
Danville, PA 17822-4903
Phone (570) 271-6338

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in SC, PA2 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20200107000675 SC Practitioner - PathologyPractitioner - HematologyPractitioner - Medical Genetics and Genomics 1254570682 Reassigns benefits to 1 organization
I20251112001551 PA Practitioner - Pathology 1254570682 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Pathology
Education
Other, 2011
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Geisinger ClinicGroup PAC ID 5395657001, 3,432 clinicians
Geisinger-HM Joint Venture LLCGroup PAC ID 1355676370, 426 clinicians

Practice addresses (Care Compare)

100 N Academy Ave
Danville, PA 17822-9800
Phone (570) 271-6211

255 Route 220 Hwy
Muncy, PA 17756-7569
Phone (570) 308-2600

Hospital & facility affiliations

  • Geisinger Medical Center Hospital, Danville, PA, CCN 390006
  • Geisinger Wyoming Valley Medical Center Hospital, Wilkes Barre, PA, CCN 390270
  • Geisinger-Community Medical Center Hospital, Scranton, PA, CCN 390001
  • Geisinger-Lewistown Hospital Hospital, Lewistown, PA, CCN 390048

Merit-based Incentive Payment System (MIPS)

Final score
79.02 of 100Reported as group
Quality
62.41
Promoting interoperability
99
Improvement activities
40

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
MD491207PAMDClinical Pathology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Geisinger-HM Joint Venture LLC CurrentSince Oct 13, 2025 Accepting new patients
University Medical Associates of the Medical University of South Carol Anatomic Pathology & Clinical Pathology CurrentSince Nov 14, 2019 Accepting new patients
Geisinger Clinic CurrentSince Oct 13, 2025 Accepting new patients
University Medical Associates of the Medical University of South Carol CurrentSince Nov 14, 2019 Accepting new patients
Geisinger-HM Joint Venture, LLC Anatomic Pathology & Clinical Pathology Current Accepting new patients
Geisinger-HM Joint Venture, LLC CurrentSince Oct 13, 2025 Accepting new patients
Geisinger Clinic Current Accepting new patients
Geisinger Clinic CurrentSince Oct 13, 2025 Accepting new patients

Locations

100 N Academy Ave
Danville, PA 17822

10 Choate Cir
Montoursville, PA 17754
Phone (570) 368-5566

255 Route 220 Hwy
Muncy, PA 17756
Phone (570) 308-2600

171 Ashley Ave
Charleston, SC 29425
Phone (843) 792-2123

Organizations & group practices 8

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 65

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

View all 65

NPI Registry JSON

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

{
    "created_epoch": "1302134400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1762300800000",
    "number": "1225327596",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "100 N ACADEMY AVE",
            "city": "DANVILLE",
            "state": "PA",
            "postal_code": "178224903",
            "telephone_number": "570-271-6338",
            "fax_number": "570-271-6105"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "100 N ACADEMY AVE",
            "city": "DANVILLE",
            "state": "PA",
            "postal_code": "178229800",
            "telephone_number": "570-271-6338",
            "fax_number": "570-271-6105"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MERLO",
        "first_name": "JOSEPH",
        "middle_name": "JAMES",
        "name_prefix": "Dr.",
        "name_suffix": "Jr.",
        "credential": "M.D., PH.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2011-04-07",
        "last_updated": "2025-11-05",
        "certification_date": "2025-11-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207ZC0006X",
            "taxonomy_group": "",
            "desc": "Pathology, Clinical Pathology",
            "state": "PA",
            "license": "MD491207",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Danville, PA

Sources for this page

Verify at the official NPI Registry.