DR. MARK S OKONSKI MD
NPI 1952393209
Internal Medicine - Gastroenterology in Port Matilda, PA

Q: What is Mark Okonski's NPI number?

The NPI number for Mark Okonski is 1952393209. It was assigned to this individual provider in the NPPES registry on August 22, 2005.

Q: What is Mark Okonski's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for Mark Okonski was last updated on November 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since August 22, 2005PECOS EnrolledAccepts Medicare Assignment

91.11/100

CMS Quality Rating

132 ABIGAIL LN, PORT MATILDA, PA 16870(814) 272-5011(814) 272-6531 Get Directions Write a Review

NPPES record last updated: November 3, 2025. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Nov 3, 2025, Feb 26, 2025, Jan 5, 2024 and 1 more (4 updates tracked since 2022).

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About Dr. Mark S Okonski Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARK S OKONSKI MD (NPI 1952393209) is an individual gastroenterology provider in Port Matilda, Pennsylvania, licensed in Pennsylvania (MD488012) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS, is affiliated with Geisinger-lewistown Hospital, and is a graduate of Other (1985).

NPPES Registry Identity

NPI1952393209

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameDR. MARK S OKONSKICredential: MD

Location Address132 ABIGAIL LNPort Matilda, PA 16870-7153

Mailing Address13440 Blue Bay CirFort Myers, FL 33913-8761 · (239) 209-0664

Phone(814) 272-5011

Fax(814) 272-6531

Sole ProprietorNo

Medical School CMSOtherGraduated 1985

Enumeration DateAugust 22, 2005

Last NPPES UpdateNovember 3, 20254 updates tracked since enumeration

NPPES CertifiedNovember 3, 2025

✔ NPI 1952393209 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

Licenses✔ Licensed in PA · MD488012✔ Licensed in TN · 71344

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

132 ABIGAIL LN, Port Matilda, PA 16870

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Other Identifiers 3

Other12412FL · Blue Cross Blue Shield

OtherP00232929FL · Rr Medicare

Medicaid054473600FL

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter Health, Ambetter Health of Delaware.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Mark S Okonski Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5092751800

PECOS Enrollment IDI20250214000733

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

32 services32 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

21 services21 patients

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

18 services18 patients

Insertion of guide wire with dilation of esophagus using a flexible endoscope 43248

This is a procedure where a thin tube, called an endoscope, is gently passed through your mouth into your esophagus. A guide wire is then inserted to help widen any narrow areas. This helps improve swallowing and reduce discomfort.

12 services12 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Geisinger-Lewistown Hospital

Acute Care Hospitals · Lewistown, PA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390048

Location400 Highland AvenueLewistown, PA 17044 · Mifflin County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 16870 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$126.34 typical visit price

range $54.64 – $166.87

Typical copayment $31.58 (range $13.66 – $41.71)

Most-billed visit code 99204

Established Patient

$96.82 typical visit price

range $17.33 – $135.84

Typical copayment $24.20 (range $4.33 – $33.96)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

91.11/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

90.23

Promoting Interoperability

Improvement Activities

Cost

73.49

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MRS. STEPHANIE REBECCA HANLON CRNA

Nurse Anesthetist, Certified Registered