Dr. Samuel J. Leaf, DO
- Medicare services, 2024
- 354
- Medicare patients, 2024
- 255
- Part D claims, 2024
- 226
- Hospital affiliations
- 2
- Industry payments
- $23
- Practice address
- 1506 S Oneida St, Appleton, WI 54915
- Practice phone
- Call (920) 738-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Leaf'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. Samuel J. Leaf is an emergency medicine physician in Appleton, Wisconsin
Dr. Leaf practices at Ascension NE Wisconsin - St. Elizabeth Hospital in Appleton, Wisconsin, part of Ascension Health Alliance.
Dr. Leaf's NPI, 1295155596, was assigned on April 24, 2014. Dr. Leaf graduated from Michigan State University College of Osteopathic Medicine in 2014. Dr. Leaf holds Michigan license 5101020957.
- NPI
- 1295155596NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7618298712
- NPI enumeration date
- April 24, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (920) 738-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Samuel J. Leaf practices at Ascension NE Wisconsin - St. Elizabeth Hospital in Appleton, Wisconsin
Dr. Leaf's primary practice is Ascension NE Wisconsin - St. Elizabeth Hospital, at 1506 S Oneida St, Appleton, WI 54915 in Outagamie County. The practice phone is (920) 738-2000.
- Ascension NE Wisconsin - St. Elizabeth Hospital1506 S Oneida St, Appleton, WI 54915 · Outagamie CountyPhone(920) 738-2000
Source: Dmand AI Affiliation Data
Dr. Samuel J. Leaf is affiliated with 2 sites of care and 2 medical groups
Dr. Leaf's primary practice is Ascension NE Wisconsin - St. Elizabeth Hospital in Appleton, Wisconsin, part of Ascension Health Alliance. Dr. Leaf is also affiliated with HSHS St. Vincent Hospital. The medical group on file is Emergency Medicine Specialists, S.C. Dmand AI also links Dr. Leaf to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Samuel J. Leaf's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Leaf practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ascension NE Wisconsin - St. Elizabeth Hospital | Available with a free account |
| +1 more site 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 Ascension Health Alliance and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Samuel J. Leaf is one of 1,211 emergency medicine physicians in Wisconsin
Emergency medicine is Dr. Leaf's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dmand AI has Dr. Leaf's licenses on file in 2 states: Michigan and Wisconsin.
Specialties and state licenses
- Emergency medicine, MichiganPrimary
- Wisconsin license
Emergency medicine physicians near Dr. Leaf
Counts of emergency medicine physicians 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. Samuel J. Leaf billed Medicare for 354 services in 2024
CMS data shows 354 Medicare services from Dr. Leaf across 4 procedure codes in 2024, for 255 Medicare patients. Medicare paid $26,007 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Leaf's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1562024: 19726%
- Tests and treatments
- 2023: 1402024: 15712%
Dr. Leaf compared with the Wisconsin median for emergency medicine physicians, 2024
- Dr. Leaf
- Wisconsin median
- Medicare services
- 354vs 24644% above
- Medicare patients
- 255vs 22115% above
- Part D claims
- 56vs 57Close to median
Medians across 1,249 emergency medicine physicians in Wisconsin with Dmand AI profiles that report each measure.
Dr. Leaf'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. Leaf?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Leaf and other emergency medicine physicians in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Samuel J. Leaf treated 255 Medicare patients in 2024, average age 72
CMS counts 255 Medicare patients who saw Dr. Leaf in 2024. The largest group is 65 to 74, with 92 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 31% are also on Medicaid. Their average risk score is 1.74, 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. Leaf's median patient age at 57, with 53% women.
Dr. Leaf's Medicare patients by age, 2024
Dr. Leaf's Medicare patients by sex, 2024
- Women12750%
- Men12850%
Chronic conditions among Dr. Leaf's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis43%
- Mood disorders41%
- Ischemic heart disease40%
- Depression39%
- Anxiety38%
- Diabetes37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Leaf's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 57
Patient panel by sex, all payers
- Women53%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Samuel J. Leaf wrote 226 Medicare Part D claims in 2024
In 2024, Dr. Leaf wrote 226 Medicare Part D claims for 182 patients. 96% of them were for generic drugs. CMS names the drug for 56 of them, across 3 drugs with 11 or more claims each, at $166 in total drug cost. In 2023, CMS named 65 claims across 3 drugs.
Dr. Leaf's Part D claims by kind of drug, 2024
- Generic216 claims96%
- Brand-name and other10 claims4%
Dr. Leaf'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. Leaf's Part D claims, 2024
- Opioids13%29 of 226 claims
- Antibiotics23%52 of 226 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: 652024: 5614%
Drugs named by CMS: 3 in 2024, 3 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
How Dr. Samuel J. Leaf takes part in Medicare
Dr. Leaf accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Samuel J. Leaf received $23 in industry payments from 2016 to 2017
CMS Open Payments shows 2 general payments to Dr. Leaf from 1 drug or device company from 2016 to 2017. Food and beverage make up the largest share, 100% of the total. Pfizer Inc. paid the most, $23.
General payments to Dr. Leaf by program year, 2016 to 2017
Companies that paid Dr. Leaf the most, 2016 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Samuel J. Leaf graduated from Michigan State University College of Osteopathic Medicine
Dr. Leaf graduated from Michigan State University College of Osteopathic Medicine in 2014.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Samuel J. Leaf'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) |
| 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. Samuel J. Leaf
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. Samuel J. Leaf's NPI number?
Dr. Samuel J. Leaf's NPI number is 1295155596. It was assigned on April 24, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Samuel J. Leaf?
Dr. Samuel J. Leaf is an emergency medicine physician in Appleton, Wisconsin. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Samuel J. Leaf practice?
Dr. Leaf practices at 1506 S Oneida St, Appleton, WI 54915. Dr. Leaf's primary practice is Ascension NE Wisconsin - St. Elizabeth Hospital in Appleton, Wisconsin, part of Ascension Health Alliance. Dmand AI also links Dr. Leaf to 1 medical group.
What is Dr. Samuel J. Leaf's office phone number?
The practice phone on file for Dr. Leaf is (920) 738-2000.
What is Dr. Samuel J. Leaf's medical license number?
Dr. Leaf holds Michigan license 5101020957, one of the licenses on file in 2 states.
Which states has Dr. Samuel J. Leaf been licensed in?
Dmand AI has state licenses on file for Dr. Leaf in Michigan and Wisconsin.
Which hospitals is Dr. Samuel J. Leaf affiliated with?
Dr. Leaf practices at Ascension NE Wisconsin - St. Elizabeth Hospital in Appleton, Wisconsin. Dr. Leaf is also affiliated with HSHS St. Vincent Hospital.
What medical group is Dr. Samuel J. Leaf part of?
Dr. Leaf is linked to Emergency Medicine Specialists, S.C. Dmand AI links Dr. Leaf to 1 more medical group.
Does Dr. Samuel J. Leaf accept Medicare?
Yes. CMS data shows Dr. Leaf billed Medicare for 354 services in 2024, and Dr. Leaf accepts Medicare assignment.
How many Medicare patients does Dr. Samuel J. Leaf see?
CMS counts 255 Medicare patients who saw Dr. Leaf in 2024, with an average age of 72.
Show 5 more questionsShow fewer questions
What services does Dr. Samuel J. Leaf bill to Medicare?
In 2024, Dr. Leaf's most billed Medicare services were heart test or procedure (93010), emergency department visit (99285) and critical care (99291).
Where did Dr. Samuel J. Leaf go to medical school?
Dr. Leaf graduated from Michigan State University College of Osteopathic Medicine in 2014.
What drugs does Dr. Samuel J. Leaf prescribe most?
In 2024 Medicare Part D data, Dr. Leaf's most prescribed drugs by claims were Hydrocodone-Acetaminophen, Prednisone and Furosemide.
Has Dr. Samuel J. Leaf received payments from drug or device companies?
CMS Open Payments shows $23 in general payments to Dr. Leaf from 1 company from 2016 to 2017. The largest total came from Pfizer Inc.
How long has Dr. Samuel J. Leaf been practicing?
Dr. Leaf graduated from medical school in 2014, 12 years ago.
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