Dr. Mark S. Okonski, MD
- Medicare services, 2024
- 83
- Medicare patients, 2024
- 74
- Part D claims, 2019
- 77
- MIPS score, 2024
- 100
- Hospital affiliations
- 1
- Practice address
- 100 N Academy Ave, Danville, PA 17822
- Practice phone
- Call (570) 214-9654
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Geisinger Medical Center
Danville, Pennsylvania
Find Dr. Okonski's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Mark S. Okonski is a gastroenterologist in Danville, Pennsylvania
Dr. Okonski practices at Geisinger Medical Center in Danville, Pennsylvania.
Dr. Okonski's NPI, 1952393209, was assigned on August 22, 2005. Dr. Okonski holds South Carolina license 90282.
- NPI
- 1952393209NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5092751800
- NPI enumeration date
- August 22, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (570) 214-9654
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark S. Okonski practices at Geisinger Medical Center in Danville, Pennsylvania
Dr. Okonski's primary practice is Geisinger Medical Center, at 100 N Academy Ave, Danville, PA 17822 in Montour County. The practice phone is (570) 214-9654.
- Geisinger Medical Center100 N Academy Ave, Danville, PA 17822 · Montour CountyPhone(570) 214-9654
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mark S. Okonski is affiliated with 4 sites of care and 4 medical groups
Dr. Okonski's primary practice is Geisinger Medical Center in Danville, Pennsylvania. Dr. Okonski is also affiliated with Geisinger Lewistown Hospital. The medical group on file is Geisinger. Dmand AI also links Dr. Okonski to 3 more medical groups and 2 group practices and clinics, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Mark S. Okonski's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Okonski practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Geisinger Medical Center | Available with a free account |
| +3 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Mark S. Okonski is one of 899 gastroenterologists in Pennsylvania
Gastroenterology is Dr. Okonski's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dmand AI has Dr. Okonski's licenses on file in 5 states: South Carolina, Colorado, Florida, Pennsylvania and Tennessee.
Specialties and state licenses
- Gastroenterology, South CarolinaPrimary
- Colorado license
- Florida license
- Pennsylvania license
- Tennessee license
Gastroenterologists near Dr. Okonski
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Mark S. Okonski billed Medicare for 83 services in 2024
CMS data shows 83 Medicare services from Dr. Okonski across 4 procedure codes in 2024, for 74 Medicare patients. Medicare paid $9,864 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Okonski's Medicare services by type, 2022 to 2024
- 2022
- 2024
- Surgery
- 2022: 122024: 83592%
Dr. Okonski compared with the Pennsylvania median for gastroenterologists, 2024
- Dr. Okonski
- Pennsylvania median
- Medicare services
- 83vs 40179% below
- Medicare patients
- 74vs 29475% below
- Part D claims
- 77vs 37579% below
Medians across 899 gastroenterologists in Pennsylvania with Dmand AI profiles that report each measure.
Dr. Okonski's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Okonski?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Okonski and other gastroenterologists in Pennsylvania.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark S. Okonski treated 74 Medicare patients in 2024, average age 70
CMS counts 74 Medicare patients who saw Dr. Okonski in 2024. The largest group is 65 to 74, with 46 patients. 75% of them have high blood pressure, and 64% have high cholesterol. Their average risk score is 0.87, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Okonski's median patient age at 67, with 50% women.
Dr. Okonski's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Okonski's Medicare patients by sex, 2024
- Women4257%
- Men3243%
Chronic conditions among Dr. Okonski's Medicare patients, 2024
- High blood pressure75%
- High cholesterol64%
- Arthritis42%
- Mood disorders35%
- Anxiety34%
- Depression31%
- Diabetes30%
- COPD22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Okonski's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark S. Okonski wrote 77 Medicare Part D claims in 2019
In 2019, Dr. Okonski wrote 77 Medicare Part D claims. Every claim was for a generic drug. They cover 3 drugs, with $1,305 in total drug cost. In 2018, CMS named 721 claims across 14 drugs.
Dr. Okonski's most prescribed drugs by claims, 2019
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2018 to 2019
- 2018
- 2019
- Claims for drugs CMS names
- 2018: 7212019: 7789%
Drugs named by CMS: 3 in 2019, 14 in 2018.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
Dr. Mark S. Okonski scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Okonski for performance year 2024, reported as part of a group. Dr. Okonski accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 22 procedures of colonoscopy by Dr. Okonski, more than 49% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Okonski's MIPS scores, performance year 2024
- 100of 100Final score
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Okonski ranks in Medicare procedure volume
- Colonoscopy
- 49th percentile22 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Mark S. Okonski received $143 in industry payments in 2017
CMS Open Payments shows 3 general payments to Dr. Okonski from 3 drug and device companies in 2017. Education make up the largest share, 84% of the total. Aries Pharmaceuticals, Inc. paid the most, $99.
General payments to Dr. Okonski by kind, 2017 to 2017
- Education$12084%
- Food and beverage$2316%
Companies that paid Dr. Okonski the most, 2017 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Mark S. Okonski's profile data
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Mark S. Okonski
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Mark S. Okonski's NPI number?
Dr. Mark S. Okonski's NPI number is 1952393209. It was assigned on August 22, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark S. Okonski?
Dr. Mark S. Okonski is a gastroenterologist in Danville, Pennsylvania. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Mark S. Okonski practice?
Dr. Okonski practices at 100 N Academy Ave, Danville, PA 17822. Dr. Okonski's primary practice is Geisinger Medical Center in Danville, Pennsylvania. Dmand AI also links Dr. Okonski to 3 medical groups and 2 group practices and clinics.
What is Dr. Mark S. Okonski's office phone number?
The practice phone on file for Dr. Okonski is (570) 214-9654.
What is Dr. Mark S. Okonski's medical license number?
Dr. Okonski holds South Carolina license 90282, one of the licenses on file in 5 states.
Which states has Dr. Mark S. Okonski been licensed in?
Dmand AI has state licenses on file for Dr. Okonski in South Carolina, Colorado, Florida, Pennsylvania and Tennessee.
Which hospitals is Dr. Mark S. Okonski affiliated with?
Dr. Okonski is affiliated with Geisinger Lewistown Hospital.
What medical group is Dr. Mark S. Okonski part of?
Dr. Okonski is linked to Geisinger. Dmand AI links Dr. Okonski to 3 more medical groups.
Does Dr. Mark S. Okonski accept Medicare?
Yes. CMS data shows Dr. Okonski billed Medicare for 83 services in 2024, and Dr. Okonski accepts Medicare assignment.
What is Dr. Mark S. Okonski's MIPS score?
Dr. Okonski's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.
Show 5 more questionsShow fewer questions
How many Medicare patients does Dr. Mark S. Okonski see?
CMS counts 74 Medicare patients who saw Dr. Okonski in 2024, with an average age of 70.
What services does Dr. Mark S. Okonski bill to Medicare?
In 2024, Dr. Okonski's most billed Medicare services were surgery: digestive system (45385), surgery: digestive system (43239) and surgery: digestive system (45380).
What drugs does Dr. Mark S. Okonski prescribe most?
In 2019 Medicare Part D data, Dr. Okonski's most prescribed drugs by claims were Pantoprazole Sodium, Omeprazole and Famotidine.
Has Dr. Mark S. Okonski received payments from drug or device companies?
CMS Open Payments shows $143 in general payments to Dr. Okonski from 3 companies from 2017 to 2017. The largest total came from Aries Pharmaceuticals, Inc.
How long has Dr. Mark S. Okonski been practicing?
Dr. Okonski graduated from medical school in 1985, 41 years ago.
Selling to gastroenterology practices?
See gastroenterologists in Pennsylvania by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card