Dr. Donald Joseph Johann Jr., MD
- Medicare services, 2022
- 146
- Publications
- 44
- Clinical trials
- 1
- Hospital affiliations
- 1
- Industry payments
- $178
- Practice address
- 4301 W Markham, Little Rock, AR 72205
- Practice phone
- Call (501) 749-4905
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
UAMS Medical Center - Surgery Center
Surgery Center - Not Medicare-Certified · Little Rock, Arkansas
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Dr. Donald Joseph Johann Jr. is a hematologist and oncologist in Little Rock, Arkansas
Dr. Johann practices at UAMS Medical Center - Surgery Center in Little Rock, Arkansas.
Dr. Johann's NPI, 1477731263, was assigned on February 5, 2008. Dr. Johann graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University in 1994. Dr. Johann holds Arkansas license E-8041.
- NPI
- 1477731263NPI Registry (opens in a new tab)
- NPI enumeration date
- February 5, 2008
- NPI status
- Active
- Practice phone
- (501) 749-4905
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Donald Joseph Johann Jr. practices at UAMS Medical Center - Surgery Center in Little Rock, Arkansas
Dr. Johann's primary practice is UAMS Medical Center - Surgery Center, at 4301 W Markham, Little Rock, AR 72205. The practice phone is (501) 749-4905.
- UAMS Medical Center - Surgery Center4301 W Markham, Little Rock, AR 72205Phone(501) 749-4905
Source: Dmand AI Affiliation Data
Dr. Donald Joseph Johann Jr. is affiliated with 2 sites of care and 1 medical group
Dr. Johann's primary practice is UAMS Medical Center - Surgery Center in Little Rock, Arkansas. Dr. Johann is also affiliated with UAMS Medical Center. Dmand AI also links Dr. Johann to 1 more medical group, named with a free account. Dr. Johann's employer is on file too: a surgery center (asc).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Donald Joseph Johann Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johann practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UAMS Medical Center - Surgery Center | 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. Donald Joseph Johann Jr. is one of 89 hematologists and oncologists in Arkansas
Hematology and oncology is Dr. Johann's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dmand AI has Dr. Johann's licenses on file in 2 states: Arkansas and New York.
Specialties and state licenses
- Hematology and oncology, ArkansasPrimary
- New York license
Hematologists and oncologists near Dr. Johann
Counts of hematologists and oncologists 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. Donald Joseph Johann Jr. billed Medicare for 146 services in 2022
CMS data shows 146 Medicare services from Dr. Johann across 1 procedure code in 2022. Medicare paid $10,522 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Johann's Medicare services by type, 2020 to 2022
- 2020
- 2022
- Office and hospital visits
- 2020: 1582022: 1468%
Dr. Johann compared with the Arkansas median for hematologists and oncologists, 2022
- Dr. Johann
- Arkansas median
- Medicare services
- 146vs 4,81697% below
Medians across 88 hematologists and oncologists in Arkansas with Dmand AI profiles that report each measure.
Dr. Johann'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. Johann?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Johann and other hematologists and oncologists in Arkansas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Donald Joseph Johann Jr.'s patients have a median age of 24
Across all payers, Dmand AI patient panel data puts Dr. Johann's median patient age at 24, with 100% women.
Dr. Johann's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 24
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
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Dr. Donald Joseph Johann Jr. has 44 publications on record
Dmand AI links 44 papers to Dr. Johann, published from 2012 to 2025. 2021 was the busiest year, with 8. The most frequent topics are Biomarkers, Tumor, High-Throughput Nucleotide Sequencing and Liquid Biopsy. Dr. Johann has published most often in Methods Mol Biol. Dr. Johann's most frequent co-authors are Jerry Lee, MD, James C. Willey, MD and Bart Barlogie, MD.
Dr. Johann's papers by year, 2013 to 2025
Topics Dr. Johann writes about most
- Biomarkers, Tumor
- High-Throughput Nucleotide Sequencing
- Liquid Biopsy
- Proteomics
- Chromatography, Liquid
- Genomics
- Mass Spectrometry
- Precision Medicine
Dr. Johann's most frequent co-authors
Recent publications by Dr. Johann
Clin Pharmacol Ther
Exp Biol Med (Maywood)
See who Dr. Johann researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Johann works with, so you can find a warm path to the right hematologists and oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Donald Joseph Johann Jr. has worked on 1 clinical trial
Dmand AI links Dr. Johann to 1 clinical trial. 1 is still active or recruiting. Conditions studied include Head and Neck Neoplasms and Lung Neoplasms.
Conditions in Dr. Johann's trials
- Head and Neck Neoplasms
- Lung Neoplasms
Investigators on the most trials with Dr. Johann
Recent clinical trials with Dr. Johann
A Feasibility Study to Further the Development of Lung Cancer-based Precision Medicine (opens in a new tab)
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Donald Joseph Johann Jr. received $178 in industry payments from 2017 to 2019
CMS Open Payments shows 2 general payments to Dr. Johann from 2 drug and device companies from 2017 to 2019. Food and beverage make up the largest share, 100% of the total. Eli Lilly and Company paid the most, $104.
General payments to Dr. Johann by program year, 2017 to 2019
Companies that paid Dr. Johann the most, 2017 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Donald Joseph Johann Jr. graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University
Dr. Johann graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University in 1994.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Donald Joseph Johann Jr.'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 |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (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. Donald Joseph Johann Jr.
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. Donald Joseph Johann Jr.'s NPI number?
Dr. Donald Joseph Johann Jr.'s NPI number is 1477731263. It was assigned on February 5, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Donald Joseph Johann Jr.?
Dr. Donald Joseph Johann Jr. is a hematologist and oncologist in Little Rock, Arkansas. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Donald Joseph Johann Jr. practice?
Dr. Johann practices at 4301 W Markham, Little Rock, AR 72205. Dr. Johann's primary practice is UAMS Medical Center - Surgery Center in Little Rock, Arkansas. Dmand AI also links Dr. Johann to 1 medical group.
What is Dr. Donald Joseph Johann Jr.'s office phone number?
The practice phone on file for Dr. Johann is (501) 749-4905.
What is Dr. Donald Joseph Johann Jr.'s medical license number?
Dr. Johann holds Arkansas license E-8041, one of the licenses on file in 2 states.
Which states has Dr. Donald Joseph Johann Jr. been licensed in?
Dmand AI has state licenses on file for Dr. Johann in Arkansas and New York.
Which hospitals is Dr. Donald Joseph Johann Jr. affiliated with?
Dr. Johann is affiliated with UAMS Medical Center.
Does Dr. Donald Joseph Johann Jr. accept Medicare?
Yes. CMS data shows Dr. Johann billed Medicare for 146 services in 2022.
What services does Dr. Donald Joseph Johann Jr. bill to Medicare?
In 2022, Dr. Johann's most billed Medicare services were hospital inpatient care (99233).
Where did Dr. Donald Joseph Johann Jr. go to medical school?
Dr. Johann graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University in 1994.
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Has Dr. Donald Joseph Johann Jr. received payments from drug or device companies?
CMS Open Payments shows $178 in general payments to Dr. Johann from 2 companies from 2017 to 2019. The largest total came from Eli Lilly and Company.
How long has Dr. Donald Joseph Johann Jr. been practicing?
Dr. Johann graduated from medical school in 1994, 32 years ago.
Does Dr. Donald Joseph Johann Jr. do research?
Dmand AI links 44 publications to Dr. Johann, published from 2012 to 2025. Dr. Johann has worked on 1 clinical trial.
Who does Dr. Donald Joseph Johann Jr. publish with?
Dr. Johann's most frequent co-authors are Jerry Lee, MD (6 shared papers), James C. Willey, MD (6 shared papers) and Bart Barlogie, MD (5 shared papers).
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