Dr. Leonard Stephen Fischer, MD
- Medicare services, 2022
- 29
- Part D claims, 2022
- 31
- Publications
- 2
- Industry payments
- $2,997
- Affiliated sites
- 1
- Practice address
- 701 10th SE St, Cedar Rapids, IA 52403
- Practice phone
- Call (319) 398-6011
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mercy Medical Center - Cedar Rapids
Cedar Rapids, Iowa
Find Dr. Fischer's professional email, personal email and mobile number
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Dr. Leonard Stephen Fischer is a gastroenterologist in Cedar Rapids, Iowa
Dr. Fischer practices at Mercy Medical Center - Cedar Rapids in Cedar Rapids, Iowa.
Dr. Fischer's NPI, 1487614863, was assigned on March 28, 2006. Dr. Fischer graduated from Georgetown University School of Medicine in 1975. Dr. Fischer holds Pennsylvania license MD469668.
- NPI
- 1487614863NPI Registry (opens in a new tab)
- NPI enumeration date
- March 28, 2006
- NPI status
- Active
- Practice phone
- (319) 398-6011
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 77
- Medical school graduation
- 1975
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Leonard Stephen Fischer practices at Mercy Medical Center - Cedar Rapids in Cedar Rapids, Iowa
Dr. Fischer's primary practice is Mercy Medical Center - Cedar Rapids, at 701 10th SE St, Cedar Rapids, IA 52403 in Linn County. The practice phone is (319) 398-6011.
- Mercy Medical Center - Cedar Rapids701 10th SE St, Cedar Rapids, IA 52403 · Linn CountyPhone(319) 398-6011
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Leonard Stephen Fischer is affiliated with 2 sites of care and 2 medical groups
Dr. Fischer's primary practice is Mercy Medical Center - Cedar Rapids in Cedar Rapids, Iowa. The medical group on file is Privia Medical Group. Dmand AI also links Dr. Fischer to 1 more group practice or clinic and 1 medical group, 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. Leonard Stephen Fischer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Fischer practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercy Medical Center - Cedar Rapids | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Leonard Stephen Fischer is one of 113 gastroenterologists in Iowa
Gastroenterology is Dr. Fischer's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Fischer is licensed in Pennsylvania.
Specialties and state licenses
- Gastroenterology, PennsylvaniaPrimary
Gastroenterologists near Dr. Fischer
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. Leonard Stephen Fischer billed Medicare for 29 services in 2022
CMS data shows 29 Medicare services from Dr. Fischer across 2 procedure codes in 2022, all of them office visits. Medicare paid $1,224 for them. Every service was in an office.
Dr. Fischer's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 382022: 2924%
Dr. Fischer compared with the Iowa median for gastroenterologists, 2022
- Dr. Fischer
- Iowa median
- Medicare services
- 29vs 51394% below
- Part D claims
- 31vs 39092% below
Medians across 118 gastroenterologists in Iowa with Dmand AI profiles that report each measure.
Dr. Fischer'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Fischer and other gastroenterologists in Iowa.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Leonard Stephen Fischer's patients have a median age of 71
Across all payers, Dmand AI patient panel data puts Dr. Fischer's median patient age at 71, with 45% women.
Dr. Fischer'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
- Women45%
- Men55%
Source: Dmand AI Patient Panel Data
Dr. Leonard Stephen Fischer wrote 31 Medicare Part D claims in 2022
In 2022, Dr. Fischer wrote 31 Medicare Part D claims. They cover 2 drugs, with $2,399 in total drug cost. In 2021, CMS named 18 claims across 1 drug.
Dr. Fischer's most prescribed drugs by claims, 2022
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, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 182022: 3172%
Drugs named by CMS: 2 in 2022, 1 in 2021.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Leonard Stephen Fischer has 2 publications on record
Dmand AI links 2 papers to Dr. Fischer in 2012. Dr. Fischer's most frequent co-authors are Felix W. Leung, MD and Maria Fe P Paraguya, MD.
Dr. Fischer's most frequent co-authors
- Felix W. Leung, MD1 shared paper
- Maria Fe P Paraguya, MD1 shared paper
Recent publications by Dr. Fischer
Intellect Dev Disabil
See who Dr. Fischer researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Fischer 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. Leonard Stephen Fischer received $2,997 in industry payments from 2016 to 2019
CMS Open Payments shows 146 general payments to Dr. Fischer from 26 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 89% of the total. Endogastric Solutions, Inc paid the most, $507.
General payments to Dr. Fischer by program year, 2016 to 2019
General payments to Dr. Fischer by kind, 2016 to 2019
- Food and beverage$2,66689%
- Travel and lodging$33211%
Companies that paid Dr. Fischer the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Leonard Stephen Fischer graduated from Georgetown University School of Medicine
Dr. Fischer graduated from Georgetown University School of Medicine in 1975.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Leonard Stephen Fischer'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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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. Leonard Stephen Fischer
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. Leonard Stephen Fischer's NPI number?
Dr. Leonard Stephen Fischer's NPI number is 1487614863. It was assigned on March 28, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Leonard Stephen Fischer?
Dr. Leonard Stephen Fischer is a gastroenterologist in Cedar Rapids, Iowa. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Leonard Stephen Fischer practice?
Dr. Fischer practices at 701 10th SE St, Cedar Rapids, IA 52403. Dr. Fischer's primary practice is Mercy Medical Center - Cedar Rapids in Cedar Rapids, Iowa. Dmand AI also links Dr. Fischer to 1 group practice or clinic and 1 medical group.
What is Dr. Leonard Stephen Fischer's office phone number?
The practice phone on file for Dr. Fischer is (319) 398-6011.
What is Dr. Leonard Stephen Fischer's medical license number?
Dr. Fischer holds Pennsylvania license MD469668.
What medical group is Dr. Leonard Stephen Fischer part of?
Dr. Fischer is linked to Privia Medical Group. Dmand AI links Dr. Fischer to 1 more medical group.
Does Dr. Leonard Stephen Fischer accept Medicare?
Yes. CMS data shows Dr. Fischer billed Medicare for 29 services in 2022.
What services does Dr. Leonard Stephen Fischer bill to Medicare?
In 2022, Dr. Fischer's most billed Medicare services were office visit, established patient (99212) and office visit, established patient (99213).
Where did Dr. Leonard Stephen Fischer go to medical school?
Dr. Fischer graduated from Georgetown University School of Medicine in 1975.
What drugs does Dr. Leonard Stephen Fischer prescribe most?
In 2022 Medicare Part D data, Dr. Fischer's most prescribed drugs by claims were Suprep and Pantoprazole Sodium.
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Has Dr. Leonard Stephen Fischer received payments from drug or device companies?
CMS Open Payments shows $2,997 in general payments to Dr. Fischer from 26 companies from 2016 to 2019. The largest total came from Endogastric Solutions, Inc.
How long has Dr. Leonard Stephen Fischer been practicing?
Dr. Fischer graduated from medical school in 1975, 51 years ago.
Does Dr. Leonard Stephen Fischer do research?
Dmand AI links 2 publications to Dr. Fischer.
Who does Dr. Leonard Stephen Fischer publish with?
Dr. Fischer's most frequent co-authors are Felix W. Leung, MD (1 shared paper) and Maria Fe P Paraguya, MD (1 shared paper).
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