NPIMap

Individual provider Active NPI

Mark S Okonski, MD

  • Gastroenterology Physician
  • Port Matilda, PA
National Provider Identifier
1952393209
Registry record updated Nov 3, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Gastroenterology PhysicianTaxonomy code 207RG0100X
License
MD488012 Issued in PA
Practice address
132 Abigail LN
Port Matilda, PA 16870-7153
Phone
(814) 272-5011
Fax
(814) 272-6531
NPI assigned
Aug 22, 2005
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Nov 3, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Gastroenterology Physician 207RG0100X MD488012 PA Primary
Gastroenterology Physician 207RG0100X 71344 TN

Addresses

Primary practice location

132 Abigail LN
Port Matilda, PA 16870-7153

Mailing address

13440 Blue Bay Cir
Fort Myers, FL 33913-8761
Phone (239) 209-0664

Other identifiers 3

IdentifierTypeStateIssuer
12412OtherFLBLUE CROSS BLUE SHIELD
P00232929OtherFLRR MEDICARE
054473600MedicaidFL

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CO, SC, TN, PA4 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 4

Enrollment IDStateProvider typePAC IDDetails
I20221206001523 CO Practitioner - Internal Medicine 5092751800 Reassigns benefits to 1 organization
I20240130000185 SC Practitioner - Internal Medicine 5092751800 Reassigns benefits to 1 organization
I20240722001334 TN Practitioner - GastroenterologyPractitioner - Internal Medicine 5092751800
I20250214000733 PA Practitioner - Gastroenterology 5092751800 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Gastroenterology
Education
Other, 1985
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Geisinger ClinicGroup PAC ID 5395657001, 3,432 clinicians

Practice addresses (Care Compare)

132 Abigail LN
Port Matilda, PA 16870-7153
Phone (814) 272-7100

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
100 of 100Reported as group
Promoting interoperability
100
Improvement activities
40

Procedures performed for Medicare patients

ProcedureNumber of procedures
Colonoscopy47
Upper gastrointestinal (GI) endoscopy for acid reflux19

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Geisinger Clinic CurrentSince Mar 3, 2025 Accepting new patients
Denver Health and Hospital Authority CurrentSince Sep 19, 2022 Accepting new patients
Denver Health and Hospital Authority CurrentSince Sep 19, 2022 Accepting new patients
Geisinger Clinic Current Accepting new patients
Georgetown Physician Associates Gastroenterology CurrentSince Feb 16, 2024 Accepting new patients
Geisinger Clinc CurrentSince Mar 3, 2025 Accepting new patients
Georgetown Physician Associates LLC CurrentSince Feb 16, 2024 Accepting new patients
Georgetown Physician Associates, LLC Current Accepting new patients
Bozeman Health Deaconess Hospital Past Accepting new patients

Locations

777 Bannock St
#3240
Denver, CO 80204
Phone (303) 602-2714

777 Bannock St
Denver, CO 80204

100 N Academy Ave
Danville, PA 17822

132 Abigail Ln
Port Matilda, PA 16870
Phone (814) 272-5011

606 Black River Rd
Ste 300
Georgetown, SC 29440
Phone (843) 527-4343

2347 S Highway 17
Murrells Inlet, SC 29576
Phone (843) 357-2443

4070 Highway 17
Murrells Inlt, SC 29576
Phone (843) 357-5100

Organizations & group practices 9

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 9

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": "1124668800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1762128000000",
    "number": "1952393209",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "13440 BLUE BAY CIR",
            "city": "FORT MYERS",
            "state": "FL",
            "postal_code": "339138761",
            "telephone_number": "239-209-0664"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "132 ABIGAIL LN",
            "city": "PORT MATILDA",
            "state": "PA",
            "postal_code": "168707153",
            "telephone_number": "814-272-5011",
            "fax_number": "814-272-6531"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "OKONSKI",
        "first_name": "MARK",
        "middle_name": "S",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-08-22",
        "last_updated": "2025-11-03",
        "certification_date": "2025-11-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "PA",
            "license": "MD488012",
            "primary": true
        },
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "TN",
            "license": "71344",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUE CROSS BLUE SHIELD",
            "identifier": "12412",
            "state": "FL"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RR MEDICARE",
            "identifier": "P00232929",
            "state": "FL"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "054473600",
            "state": "FL"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Port Matilda, PA

Sources for this page

Verify at the official NPI Registry.