Dr. Leo C. Katz, MD
- Medicare services, 2024
- 485
- Medicare patients, 2024
- 365
- Part D claims, 2024
- 1,176
- Publications
- 5
- Hospital affiliations
- 2
- Practice address
- 111 South 11th Street, Philadelphia, PA 19107
- Practice phone
- Call (215) 955-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Katz's professional email, personal email and mobile number
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Dr. Leo C. Katz is a gastroenterologist in Philadelphia, Pennsylvania
Dr. Katz practices at Thomas Jefferson University Hospital in Philadelphia, Pennsylvania, part of Thomas Jefferson University.
Dr. Katz's NPI, 1700845633, was assigned on March 20, 2006. Dr. Katz graduated from State University of NY Upstate Medical University in 1988. Dr. Katz holds Pennsylvania license MD043084L.
- NPI
- 1700845633NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9739181843
- NPI enumeration date
- March 20, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (215) 955-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Leo C. Katz practices at Thomas Jefferson University Hospital in Philadelphia, Pennsylvania
Dr. Katz's primary practice is Thomas Jefferson University Hospital, at 111 South 11th Street, Philadelphia, PA 19107 in Philadelphia County. The practice phone is (215) 955-6000.
- Thomas Jefferson University Hospital111 South 11th Street, Philadelphia, PA 19107 · Philadelphia CountyPhone(215) 955-6000
Source: Dmand AI Affiliation Data
Dr. Leo C. Katz is affiliated with 4 sites of care and 2 medical groups
Dr. Katz's primary practice is Thomas Jefferson University Hospital in Philadelphia, Pennsylvania, part of Thomas Jefferson University. Dr. Katz is also affiliated with Jefferson Stratford Hospital. The medical group on file is Jefferson University Physicians. Dmand AI also links Dr. Katz to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Leo C. Katz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Katz practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Thomas Jefferson University Hospital | 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
Dmand AI maps EHR vendors, IT decision makers and buying committees across Thomas Jefferson University and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Leo C. Katz is one of 899 gastroenterologists in Pennsylvania
Gastroenterology is Dr. Katz's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Katz is licensed in Pennsylvania.
Specialties and state licenses
- Gastroenterology, PennsylvaniaPrimary
Gastroenterologists near Dr. Katz
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. Leo C. Katz billed Medicare for 485 services in 2024
CMS data shows 485 Medicare services from Dr. Katz across 12 procedure codes in 2024, for 365 Medicare patients. Medicare paid $49,245 for them.
Dr. Katz's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2962024: 3146%
- Surgery
- 2023: 1962024: 15521%
- Other services
- 2023: 322024: 1650%
Where Dr. Katz's Medicare services took place, 2024
- In an office10221%
- In a facility38379%
Dr. Katz compared with the Pennsylvania median for gastroenterologists, 2024
- Dr. Katz
- Pennsylvania median
- Medicare services
- 485vs 40121% above
- Medicare patients
- 365vs 29424% above
- Part D claims
- 1,030vs 3752.7 times
Medians across 899 gastroenterologists in Pennsylvania with Dmand AI profiles that report each measure.
Dr. Katz'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. Katz?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Katz and other gastroenterologists in Pennsylvania.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Leo C. Katz treated 365 Medicare patients in 2024, average age 73
CMS counts 365 Medicare patients who saw Dr. Katz in 2024. The largest group is 65 to 74, with 165 patients. 75% of them have high cholesterol, and 74% have high blood pressure. 12% are also on Medicaid. Their average risk score is 1.49, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Katz's median patient age at 64, with 56% women.
Dr. Katz's Medicare patients by age, 2024
Dr. Katz's Medicare patients by sex, 2024
- Women21559%
- Men15041%
Chronic conditions among Dr. Katz's Medicare patients, 2024
- High cholesterol75%
- High blood pressure74%
- Arthritis48%
- Ischemic heart disease33%
- Anxiety32%
- Diabetes30%
- Chronic kidney disease27%
- Osteoporosis27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Katz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women56%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Leo C. Katz wrote 1,176 Medicare Part D claims in 2024
In 2024, Dr. Katz wrote 1,176 Medicare Part D claims for 299 patients. 68% of them were for generic drugs. CMS names the drug for 1,030 of them, across 21 drugs with 11 or more claims each, at $839,329 in total drug cost. In 2023, CMS named 820 claims across 17 drugs.
Dr. Katz's Part D claims by kind of drug, 2024
- Generic805 claims68%
- Brand-name371 claims32%
Dr. Katz'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. Katz's Part D claims, 2024
- Antibiotics3%33 of 1,176 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: 8202024: 1,03026%
Drugs named by CMS: 21 in 2024, 17 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. Leo C. Katz ranks in the 83rd percentile for colonoscopy in Medicare
Dr. Katz accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Katz as offering telehealth. CMS counts 118 procedures of colonoscopy by Dr. Katz, more than 83% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Dr. Katz ranks in Medicare procedure volume
- Colonoscopy
- 83rd percentile118 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 72nd percentile80 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Leo C. Katz has 5 publications on record
Dmand AI links 5 papers to Dr. Katz, published from 2012 to 2021. The most frequent topics are Colorectal Neoplasms, Cyclic GMP and Healthy Volunteers. Dr. Katz's most frequent co-authors are David M. Kastenberg, MD, Gary J. Della'Zanna, DO and Walter K. Kraft, MD.
Dr. Katz's papers by year, 2012 to 2021
Topics Dr. Katz writes about most
- Colorectal Neoplasms
- Cyclic GMP
- Healthy Volunteers
- Peptides
- Receptors, Enterotoxin
Dr. Katz's most frequent co-authors
- David M. Kastenberg, MD3 shared papers
- Gary J. Della'Zanna, DO2 shared papers
- Walter K. Kraft, MD2 shared papers
Recent publications by Dr. Katz
Cancer Prev Res (Phila)
See who Dr. Katz researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Katz works with, so you can find a warm path to the right gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Leo C. Katz received $826 in industry payments from 2016 to 2023
CMS Open Payments shows 33 general payments to Dr. Katz from 9 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Covidien LP paid the most, $354.
General payments to Dr. Katz by program year, 2016 to 2023
Companies that paid Dr. Katz the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Leo C. Katz graduated from State University of NY Upstate Medical University
Dr. Katz graduated from State University of NY Upstate Medical University in 1988.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Leo C. Katz'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 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) |
| 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. Leo C. Katz
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. Leo C. Katz's NPI number?
Dr. Leo C. Katz's NPI number is 1700845633. It was assigned on March 20, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Leo C. Katz?
Dr. Leo C. Katz is a gastroenterologist in Philadelphia, Pennsylvania. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Leo C. Katz practice?
Dr. Katz practices at 111 South 11th Street, Philadelphia, PA 19107. Dr. Katz's primary practice is Thomas Jefferson University Hospital in Philadelphia, Pennsylvania, part of Thomas Jefferson University. Dmand AI also links Dr. Katz to 2 group practices and clinics and 1 medical group.
What is Dr. Leo C. Katz's office phone number?
The practice phone on file for Dr. Katz is (215) 955-6000.
What is Dr. Leo C. Katz's medical license number?
Dr. Katz holds Pennsylvania license MD043084L.
Which hospitals is Dr. Leo C. Katz affiliated with?
Dr. Katz practices at Thomas Jefferson University Hospital in Philadelphia, Pennsylvania. Dr. Katz is also affiliated with Jefferson Stratford Hospital.
What medical group is Dr. Leo C. Katz part of?
Dr. Katz is linked to Jefferson University Physicians. Dmand AI links Dr. Katz to 1 more medical group.
Does Dr. Leo C. Katz accept Medicare?
Yes. CMS data shows Dr. Katz billed Medicare for 485 services in 2024, and Dr. Katz accepts Medicare assignment.
Does Dr. Leo C. Katz offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Katz as offering telehealth services.
How many Medicare patients does Dr. Leo C. Katz see?
CMS counts 365 Medicare patients who saw Dr. Katz in 2024, with an average age of 73.
Show 7 more questionsShow fewer questions
What services does Dr. Leo C. Katz bill to Medicare?
In 2024, Dr. Katz's most billed Medicare services were office visit, established patient (99214), surgery: digestive system (45380) and surgery: digestive system (43239).
Where did Dr. Leo C. Katz go to medical school?
Dr. Katz graduated from State University of NY Upstate Medical University in 1988.
What drugs does Dr. Leo C. Katz prescribe most?
In 2024 Medicare Part D data, Dr. Katz's most prescribed drugs by claims were Pantoprazole Sodium, Sodium Chloride and Omeprazole.
Has Dr. Leo C. Katz received payments from drug or device companies?
CMS Open Payments shows $826 in general payments to Dr. Katz from 9 companies from 2016 to 2023. The largest total came from Covidien LP.
How long has Dr. Leo C. Katz been practicing?
Dr. Katz graduated from medical school in 1988, 38 years ago.
Does Dr. Leo C. Katz do research?
Dmand AI links 5 publications to Dr. Katz, published from 2012 to 2021.
Who does Dr. Leo C. Katz publish with?
Dr. Katz's most frequent co-authors are David M. Kastenberg, MD (3 shared papers), Gary J. Della'Zanna, DO (2 shared papers) and Walter K. Kraft, MD (2 shared papers).
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