Dr. Thomas M. Oconnor, DO
- Medicare services, 2024
- 963
- Medicare patients, 2024
- 551
- Part D claims, 2024
- 393
- Hospital affiliations
- 1
- Industry payments
- $14,624
- Practice address
- 2104 Harrisburg Pike, Lancaster, PA 17601
- Practice phone
- Call (717) 869-4600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mid-Atlantic Endoscopy, LLC
Lancaster, Pennsylvania
Find Dr. Oconnor'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. Thomas M. Oconnor is a vascular surgeon in Lancaster, Pennsylvania
Dr. Oconnor practices at Mid-Atlantic Endoscopy, LLC in Lancaster, Pennsylvania.
Dr. Oconnor's NPI, 1144213992, was assigned on August 26, 2005. Dr. Oconnor graduated from New York College of Osteo Medicine of New York Institute of Technology in 1987. Dr. Oconnor holds Pennsylvania license OS009572L.
- NPI
- 1144213992NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4789623596
- NPI enumeration date
- August 26, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (717) 869-4600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thomas M. Oconnor practices at Mid-Atlantic Endoscopy, LLC in Lancaster, Pennsylvania
Dr. Oconnor's primary practice is Mid-Atlantic Endoscopy, LLC, at 2104 Harrisburg Pike, Lancaster, PA 17601 in Lancaster County. The practice phone is (717) 869-4600.
- Mid-Atlantic Endoscopy, LLC2104 Harrisburg Pike, Lancaster, PA 17601 · Lancaster CountyPhone(717) 869-4600
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Thomas M. Oconnor is affiliated with 3 sites of care and 1 medical group
Dr. Oconnor's primary practice is Mid-Atlantic Endoscopy, LLC in Lancaster, Pennsylvania. Dr. Oconnor is also affiliated with Lancaster General Hospital. The medical group on file is Penn Medicine Lancaster General Health Physicians, Behavioral Health. Dmand AI also links Dr. Oconnor to 1 more group practice or clinic, 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. Thomas M. Oconnor's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Oconnor practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mid-Atlantic Endoscopy, LLC | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Thomas M. Oconnor is one of 220 vascular surgeons in Pennsylvania
Vascular surgery is Dr. Oconnor's primary specialty in the NPI Registry, under taxonomy code 2086S0129X. Dr. Oconnor is licensed in Pennsylvania.
Specialties and state licenses
- Vascular surgery, PennsylvaniaPrimary
Vascular surgeons near Dr. Oconnor
Counts of vascular surgeons 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. Thomas M. Oconnor billed Medicare for 963 services in 2024
CMS data shows 963 Medicare services from Dr. Oconnor across 27 procedure codes in 2024, for 551 Medicare patients. Medicare paid $84,656 for them.
Dr. Oconnor's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 3042024: 39430%
- Office and hospital visits
- 2023: 3532024: 3623%
- Imaging
- 2023: 802024: 10329%
- Surgery
- 2023: 662024: 9138%
- Other services
- 2023: 02024: 13
Where Dr. Oconnor's Medicare services took place, 2024
- In an office71875%
- In a facility24525%
Dr. Oconnor compared with the Pennsylvania median for vascular surgeons, 2024
- Dr. Oconnor
- Pennsylvania median
- Medicare services
- 963vs 62255% above
- Medicare patients
- 551vs 43228% above
- Part D claims
- 320vs 674.8 times
Medians across 216 vascular surgeons in Pennsylvania with Dmand AI profiles that report each measure.
Dr. Oconnor'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Oconnor and other vascular surgeons in Pennsylvania.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Thomas M. Oconnor treated 551 Medicare patients in 2024, average age 75
CMS counts 551 Medicare patients who saw Dr. Oconnor in 2024. The largest group is 65 to 74, with 221 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 9% are also on Medicaid. Their average risk score is 2.97, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Oconnor's median patient age at 73, with 40% women.
Dr. Oconnor's Medicare patients by age, 2024
Dr. Oconnor's Medicare patients by sex, 2024
- Women22240%
- Men32960%
Chronic conditions among Dr. Oconnor's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease53%
- Ischemic heart disease52%
- Arthritis51%
- Diabetes48%
- Heart failure37%
- Mood disorders32%
Share of Medicare patients with each condition. A patient can have several.
Dr. Oconnor's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women40%
- Men59%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Thomas M. Oconnor wrote 393 Medicare Part D claims in 2024
In 2024, Dr. Oconnor wrote 393 Medicare Part D claims for 142 patients. 98% of them were for generic drugs. CMS names the drug for 320 of them, across 4 drugs with 11 or more claims each, at $1,492 in total drug cost. In 2023, CMS named 337 claims across 6 drugs.
Dr. Oconnor's Part D claims by kind of drug, 2024
- Generic386 claims98%
- Brand-name and other7 claims2%
Dr. Oconnor's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Oconnor's Part D claims, 2024
- Opioids15%60 of 393 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3372024: 3205%
Drugs named by CMS: 4 in 2024, 6 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Thomas M. Oconnor offers telehealth to Medicare patients
Dr. Oconnor accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Oconnor as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Cataract surgery: 1 to 10 procedures (CMS shows small counts as a range)
Leg revascularization (restoring blood flow): 1 to 10 procedures (CMS shows small counts as a range)
Varicose vein removal: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Thomas M. Oconnor received $14,624 in industry payments from 2016 to 2025
CMS Open Payments shows 27 general payments to Dr. Oconnor from 10 drug and device companies from 2016 to 2025. Education make up the largest share, 89% of the total. Intuitive Surgical, Inc. paid the most, $14,156.
General payments to Dr. Oconnor by program year, 2016 to 2025
General payments to Dr. Oconnor by kind, 2016 to 2025
- Education$13,00089%
- Travel and lodging$8636%
- Food and beverage$7625%
Companies that paid Dr. Oconnor the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Thomas M. Oconnor graduated from New York College of Osteo Medicine of New York Institute of Technology
Dr. Oconnor graduated from New York College of Osteo Medicine of New York Institute of Technology in 1987.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Thomas M. Oconnor's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Thomas M. Oconnor
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. Thomas M. Oconnor's NPI number?
Dr. Thomas M. Oconnor's NPI number is 1144213992. It was assigned on August 26, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas M. Oconnor?
Dr. Thomas M. Oconnor is a vascular surgeon in Lancaster, Pennsylvania. The primary specialty in the NPI Registry is Vascular Surgery Physician (taxonomy code 2086S0129X).
Where does Dr. Thomas M. Oconnor practice?
Dr. Oconnor practices at 2104 Harrisburg Pike, Lancaster, PA 17601. Dr. Oconnor's primary practice is Mid-Atlantic Endoscopy, LLC in Lancaster, Pennsylvania. Dmand AI also links Dr. Oconnor to 1 group practice or clinic.
What is Dr. Thomas M. Oconnor's office phone number?
The practice phone on file for Dr. Oconnor is (717) 869-4600.
What is Dr. Thomas M. Oconnor's medical license number?
Dr. Oconnor holds Pennsylvania license OS009572L.
Which hospitals is Dr. Thomas M. Oconnor affiliated with?
Dr. Oconnor is affiliated with Lancaster General Hospital.
What medical group is Dr. Thomas M. Oconnor part of?
Dr. Oconnor is linked to Penn Medicine Lancaster General Health Physicians, Behavioral Health.
Does Dr. Thomas M. Oconnor accept Medicare?
Yes. CMS data shows Dr. Oconnor billed Medicare for 963 services in 2024, and Dr. Oconnor accepts Medicare assignment.
Does Dr. Thomas M. Oconnor offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Oconnor as offering telehealth services.
How many Medicare patients does Dr. Thomas M. Oconnor see?
CMS counts 551 Medicare patients who saw Dr. Oconnor in 2024, with an average age of 75.
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What services does Dr. Thomas M. Oconnor bill to Medicare?
In 2024, Dr. Oconnor's most billed Medicare services were office visit, established patient (99213), blood vessel study (93922) and blood vessel study (93880).
Where did Dr. Thomas M. Oconnor go to medical school?
Dr. Oconnor graduated from New York College of Osteo Medicine of New York Institute of Technology in 1987.
What drugs does Dr. Thomas M. Oconnor prescribe most?
In 2024 Medicare Part D data, Dr. Oconnor's most prescribed drugs by claims were Clopidogrel, Cilostazol and Oxycodone HCl.
Has Dr. Thomas M. Oconnor received payments from drug or device companies?
CMS Open Payments shows $14,624 in general payments to Dr. Oconnor from 10 companies from 2016 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Thomas M. Oconnor been practicing?
Dr. Oconnor graduated from medical school in 1987, 39 years ago.
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