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Dr. Kathleen M. Twomey, MD
NPI1780118257PAC ID7416220793
- Medicare services, 2022
- 139
- Part D claims, 2024
- 381
- Publications
- 1
- Hospital affiliations
- 4
- Industry payments
- $100
- Practice address
- 500 University Drive, Hershey, PA 17033
- Practice phone
- Call (717) 531-8521
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Twomey's professional email, personal email and mobile number
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Dr. Kathleen M. Twomey is an internist in Hershey, Pennsylvania
Dr. Twomey practices at Penn State Health Milton S. Hershey Medical Center in Hershey, Pennsylvania, part of Penn State.
Dr. Twomey's NPI, 1780118257, was assigned on April 11, 2017. Dr. Twomey graduated from University of Maryland School of Medicine in 2017. Dr. Twomey holds Ohio license 35.139532.
NPI and contact details
- NPI
- 1780118257NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7416220793
- NPI enumeration date
- April 11, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (717) 531-8521
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Kathleen M. Twomey practices at Penn State Health Milton S. Hershey Medical Center in Hershey, Pennsylvania
Dr. Twomey's primary practice is Penn State Health Milton S. Hershey Medical Center, at 500 University Drive, Hershey, PA 17033 in Dauphin County. The practice phone is (717) 531-8521.
- Penn State Health Milton S. Hershey Medical Center500 University Drive, Hershey, PA 17033 · Dauphin CountyPhone(717) 531-8521
Source: Dmand AI Affiliation Data
Dr. Kathleen M. Twomey is affiliated with 4 sites of care and 2 medical groups
Dr. Twomey's primary practice is Penn State Health Milton S. Hershey Medical Center in Hershey, Pennsylvania, part of Penn State. Dr. Twomey is also affiliated with Lancaster General Hospital. The medical group on file is Penn State Health Milton S. Hershey Medical Center. Dmand AI also links Dr. Twomey to 2 more hospitals and 1 medical group, each named with a free account.
Lancaster General HospitalPenn State Health Milton S. Hershey Medical Center2 hospitalsNames with a free account1 medical groupName with a free account
See all 6 affiliations for Dr. TwomeySources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Kathleen M. Twomey's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Twomey practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Penn State Health Milton S. Hershey Medical Center | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Kathleen M. Twomey is one of 5,665 internists in Pennsylvania
Internal medicine is Dr. Twomey's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Twomey is licensed in Ohio.
Specialties and state licenses
- Internal medicine, OhioPrimary
Internists near Dr. Twomey
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
5,665internists in Pennsylvania85internists in Hershey80internists at Penn State Health Milton S. Hershey Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Kathleen M. Twomey billed Medicare for 139 services in 2022
CMS data shows 139 Medicare services from Dr. Twomey across 3 procedure codes in 2022. Medicare paid $12,104 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2022139
Paid by Medicare$12,104
Procedure codes3
Dr. Twomey's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 4382022: 13968%
Dr. Twomey compared with the Pennsylvania median for internists, 2022
- Dr. Twomey
- Pennsylvania median
- Medicare services
- 139vs 41767% below
- Part D claims
- 292vs 22430% above
Medians across 5,518 internists in Pennsylvania with Dmand AI profiles that report each measure.
Dr. Twomey's most billed Medicare procedure codes, 2022
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. Twomey?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Twomey and other internists in Pennsylvania.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Kathleen M. Twomey's patients have a median age of 71
Across all payers, Dmand AI patient panel data puts Dr. Twomey's median patient age at 71, with 39% women.
Dr. Twomey's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women39%
- Men61%
Source: Dmand AI Patient Panel Data
Dr. Kathleen M. Twomey wrote 381 Medicare Part D claims in 2024
In 2024, Dr. Twomey wrote 381 Medicare Part D claims for 40 patients. 62% of them were for generic drugs. CMS names the drug for 292 of them, across 11 drugs with 11 or more claims each, at $48,769 in total drug cost. In 2023, CMS named 140 claims across 7 drugs.
Part D claims, 2024381
Drugs named by CMS11
Total drug cost$48,769
Part D patients40
Dr. Twomey's Part D claims by kind of drug, 2024
- Generic235 claims62%
- Brand-name146 claims38%
Dr. Twomey'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. Twomey's Part D claims, 2024
- Antibiotics6%24 of 381 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: 1402024: 292109%
Drugs named by CMS: 11 in 2024, 7 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. Kathleen M. Twomey offers telehealth to Medicare patients
Dr. Twomey accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Twomey as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Kathleen M. Twomey has 1 publication on record
Dmand AI links 1 paper to Dr. Twomey in 2020. Dr. Twomey's most frequent co-author is Kevin Louis Rakszawski, MD.
Papers1
Dr. Twomey's most frequent co-authors
Recent publications by Dr. Twomey
See who Dr. Twomey researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Twomey works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Kathleen M. Twomey received $100 in industry payments in 2019
CMS Open Payments shows 1 general payment to Dr. Twomey from 1 drug or device company in 2019. Education make up the largest share, 100% of the total. Genentech, Inc. paid the most, $100.
Companies that paid Dr. Twomey the most, 2019 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Kathleen M. Twomey graduated from University of Maryland School of Medicine
Dr. Twomey graduated from University of Maryland School of Medicine in 2017.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Kathleen M. Twomey'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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 Data |
| 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Kathleen M. Twomey
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. Kathleen M. Twomey's NPI number?
Dr. Kathleen M. Twomey's NPI number is 1780118257. It was assigned on April 11, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. Kathleen M. Twomey?
Dr. Kathleen M. Twomey is an internist in Hershey, Pennsylvania. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Kathleen M. Twomey practice?
Dr. Twomey practices at 500 University Drive, Hershey, PA 17033. Dr. Twomey's primary practice is Penn State Health Milton S. Hershey Medical Center in Hershey, Pennsylvania, part of Penn State. Dmand AI also links Dr. Twomey to 2 hospitals and 1 medical group.
What is Dr. Kathleen M. Twomey's office phone number?
The practice phone on file for Dr. Twomey is (717) 531-8521.
What is Dr. Kathleen M. Twomey's medical license number?
Dr. Twomey holds Ohio license 35.139532.
Which hospitals is Dr. Kathleen M. Twomey affiliated with?
Dr. Twomey practices at Penn State Health Milton S. Hershey Medical Center in Hershey, Pennsylvania. Dr. Twomey is also affiliated with Lancaster General Hospital. Dmand AI links Dr. Twomey to 2 more hospitals.
What medical group is Dr. Kathleen M. Twomey part of?
Dr. Twomey is linked to Penn State Health Milton S. Hershey Medical Center. Dmand AI links Dr. Twomey to 1 more medical group.
Does Dr. Kathleen M. Twomey accept Medicare?
Yes. CMS data shows Dr. Twomey billed Medicare for 139 services in 2022, and Dr. Twomey accepts Medicare assignment.
Does Dr. Kathleen M. Twomey offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Twomey as offering telehealth services.
What services does Dr. Kathleen M. Twomey bill to Medicare?
In 2022, Dr. Twomey's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99223) and hospital inpatient care (99239).
Show 6 more questionsShow fewer questions
Where did Dr. Kathleen M. Twomey go to medical school?
Dr. Twomey graduated from University of Maryland School of Medicine in 2017.
What drugs does Dr. Kathleen M. Twomey prescribe most?
In 2024 Medicare Part D data, Dr. Twomey's most prescribed drugs by claims were Montelukast Sodium, Albuterol Sulfate Hfa and Budesonide-Formoterol Fumarate.
Has Dr. Kathleen M. Twomey received payments from drug or device companies?
CMS Open Payments shows $100 in general payments to Dr. Twomey from 1 company from 2019 to 2019. The largest total came from Genentech, Inc.
How long has Dr. Kathleen M. Twomey been practicing?
Dr. Twomey graduated from medical school in 2017, 9 years ago.
Does Dr. Kathleen M. Twomey do research?
Dmand AI links 1 publication to Dr. Twomey.
Who does Dr. Kathleen M. Twomey publish with?
Dr. Twomey's most frequent co-authors are Kevin Louis Rakszawski, MD (1 shared paper).
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