Adenosine TriphosphatasesAnemia, Dyserythropoietic, CongenitalATPases Associated with Diverse Cellular Activities
Dr. Clarissa E. Johnson, MD
NPI1821282484
- Publications
- 4
- Clinical trials
- 4
- Hospital affiliations
- 1
- Industry payments
- $903
- Medical group
- 1
- Practice address
- 801 Seventh Avenue, Fort Worth, TX 76104
- Practice phone
- Call (682) 885-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Johnson's professional email, personal email and mobile number
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Dr. Clarissa E. Johnson is a pediatric hematology and oncology physician in Fort Worth, Texas
Dr. Johnson practices at Cook Children's Medical Center in Fort Worth, Texas, part of Cook Children's Health Care System.
Dr. Johnson's NPI, 1821282484, was assigned on August 28, 2007. Dr. Johnson graduated from Cleveland Medical College, Homeopathic in 2003. Dr. Johnson holds Texas license N2583.
NPI and contact details
- NPI
- 1821282484NPI Registry (opens in a new tab)
- NPI enumeration date
- August 28, 2007
- NPI status
- Active
- Practice phone
- (682) 885-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Clarissa E. Johnson practices at Cook Children's Medical Center in Fort Worth, Texas
Dr. Johnson's primary practice is Cook Children's Medical Center, at 801 Seventh Avenue, Fort Worth, TX 76104 in Tarrant County. The practice phone is (682) 885-4000.
- Cook Children's Medical Center801 Seventh Avenue, Fort Worth, TX 76104 · Tarrant CountyPhone(682) 885-4000
Source: Dmand AI Affiliation Data
Dr. Clarissa E. Johnson is affiliated with 2 sites of care and 1 medical group
Dr. Johnson's primary practice is Cook Children's Medical Center in Fort Worth, Texas, part of Cook Children's Health Care System. The medical group on file is Cook Childrens Physician Network. Dmand AI also links Dr. Johnson to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Clarissa E. Johnson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnson practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Cook Children's Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every hospital where Dr. Johnson practices
Dmand AI maps EHR vendors, IT decision makers and buying committees across Cook Children's Health Care System and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Clarissa E. Johnson is one of 291 pediatric hematologys and oncology physicians in Texas
Pediatric hematology-oncology is Dr. Johnson's primary specialty in the NPI Registry, under taxonomy code 2080P0207X. Dr. Johnson is board certified in pediatric hematology-oncology by the American Board of Pediatrics. Dmand AI has Dr. Johnson's licenses on file in 3 states: Texas, North Carolina and Ohio.
Specialties and state licenses
- Pediatric hematology and oncology, TexasPrimary
- North Carolina license
- Ohio license
Pediatric hematologys and oncology physicians near Dr. Johnson
Counts of pediatric hematologys and oncology physicians with a Dmand AI profile, by place and practice. Each opens the list.
291pediatric hematologys and oncology physicians in Texas21pediatric hematologys and oncology physicians in Fort Worth19pediatric hematologys and oncology physicians at Cook Children's Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Clarissa E. Johnson's patients have a median age of 13
Across all payers, Dmand AI patient panel data puts Dr. Johnson's median patient age at 13, with 48% women.
Dr. Johnson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 13
Patient panel by sex, all payers
- Women48%
- Men49%
Source: Dmand AI Patient Panel Data
Dr. Clarissa E. Johnson has 4 publications on record
Dmand AI links 4 papers to Dr. Johnson in 2020. 2020 was the busiest year, with 2. Dr. Johnson's most frequent co-authors are Stella T. Chou, MD, Theodosia A. Kalfa, MD and Marilyn Jo Telen, MD.
Papers4
Dr. Johnson's most frequent co-authors
- Stella T. Chou, MD2 shared papers
- Theodosia A. Kalfa, MD1 shared paper
- Marilyn Jo Telen, MD1 shared paper
Recent publications by Dr. Johnson
Haematologica
Anemia, Sickle CellAntigens, CDArterial Occlusive Diseases
Pediatrics
Antibodies, ViralChickenpoxChickenpox Vaccine
See who Dr. Johnson researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Johnson works with, so you can find a warm path to the right pediatric hematologys and oncology physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Clarissa E. Johnson has worked on 4 clinical trials
Dmand AI links Dr. Johnson to 4 clinical trials. 2 are still active or recruiting. Conditions studied include Anemia, Sickle Cell, Vaso-Occlusive Crises and Anemia, Hemolytic, Congenital. Novartis Pharmaceuticals sponsors the most, 3.
Clinical trials with Dr. Johnson by phase
- NonePhase 1: no trials
- 1Phase 2: 1 trial
- 1Phase 3: 1 trial
- 1Phase 4: 1 trial
Conditions in Dr. Johnson's trials
- Anemia, Sickle Cell
- Vaso-Occlusive Crises
- Anemia, Hemolytic, Congenital
- Sickle Cell Trait
Investigators on the most trials with Dr. Johnson
- Shayla Marie Bergmann, MD2 shared trials
- Jeremie Heath Estepp, MD2 shared trials
- Helge Dirk Hartung, MD2 shared trials
Recent clinical trials with Dr. Johnson
Vaso-Occlusive CrisesAnemia, Sickle CellCrizanlizumab
Study of Two Doses of Crizanlizumab Versus Placebo in Adolescent and Adult Sickle Cell Disease Patients (opens in a new tab)
Active, not recruitingPhase 3
Sickle Cell TraitVaso-Occlusive CrisesCrizanlizumab (SEG101)
Study of Dose Confirmation and Safety of Crizanlizumab in Pediatric Sickle Cell Disease Patients (opens in a new tab)
CompletedPhase 2
Anemia, Sickle CellAnemia, Hemolytic, CongenitalCrizanlizumab
Expanded Access Protocol for Adults and Pediatric Patients With Sickle Cell Disease Who Have No Alternative Treatment Options (opens in a new tab)
No longer available
Anemia, Sickle CellAnemia, Hemolytic, CongenitalVoxelotor
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Clarissa E. Johnson received $903 in industry payments from 2016 to 2025
CMS Open Payments shows 30 general payments to Dr. Johnson from 16 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Pfizer Inc. paid the most, $200.
General payments to Dr. Johnson by program year, 2016 to 2025
General payments to Dr. Johnson by kind, 2016 to 2025
$903in total
- Food and beverage$89199%
- Speaker and faculty fees$121%
Companies that paid Dr. Johnson the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Clarissa E. Johnson graduated from Cleveland Medical College, Homeopathic
Dr. Johnson graduated from Cleveland Medical College, Homeopathic in 2003.
- Medical school
- Board certified in pediatric hematology-oncology
- Board certified in pediatrics
Source: Dmand AI Professional Profile Data
Dr. Clarissa E. Johnson accepts plans from 6 insurance carriers
Dr. Johnson is in network with 6 carriers, including Aetna, Elevance and United Healthcare. PPO plans come from the most carriers, 5. Check the plan with the practice before a visit.
- Aetna
- Elevance
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Baylor Scott and White
- Cigna
Plan types Dr. Johnson accepts, by number of carriers
- PPO5
- HMO4
- POS4
- EPO2
- Medicare2
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Clarissa E. Johnson'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 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 |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Clarissa E. Johnson
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. Clarissa E. Johnson's NPI number?
Dr. Clarissa E. Johnson's NPI number is 1821282484. It was assigned on August 28, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Clarissa E. Johnson?
Dr. Clarissa E. Johnson is a pediatric hematology and oncology physician in Fort Worth, Texas. The primary specialty in the NPI Registry is Pediatric Hematology & Oncology Physician (taxonomy code 2080P0207X).
Where does Dr. Clarissa E. Johnson practice?
Dr. Johnson practices at 801 Seventh Avenue, Fort Worth, TX 76104. Dr. Johnson's primary practice is Cook Children's Medical Center in Fort Worth, Texas, part of Cook Children's Health Care System. Dmand AI also links Dr. Johnson to 1 group practice or clinic.
What is Dr. Clarissa E. Johnson's office phone number?
The practice phone on file for Dr. Johnson is (682) 885-4000.
What is Dr. Clarissa E. Johnson's medical license number?
Dr. Johnson holds Texas license N2583, one of the licenses on file in 3 states.
Which states has Dr. Clarissa E. Johnson been licensed in?
Dmand AI has state licenses on file for Dr. Johnson in Texas (2009 to 2027), North Carolina (2006 to 2010) and Ohio (2003 to 2006).
Which hospitals is Dr. Clarissa E. Johnson affiliated with?
Dr. Johnson practices at Cook Children's Medical Center in Fort Worth, Texas.
What medical group is Dr. Clarissa E. Johnson part of?
Dr. Johnson is linked to Cook Childrens Physician Network.
Is Dr. Clarissa E. Johnson board certified?
Yes. Dr. Johnson is board certified in pediatric hematology-oncology by the American Board of Pediatrics.
Where did Dr. Clarissa E. Johnson go to medical school?
Dr. Johnson graduated from Cleveland Medical College, Homeopathic in 2003.
Show 5 more questionsShow fewer questions
Has Dr. Clarissa E. Johnson received payments from drug or device companies?
CMS Open Payments shows $903 in general payments to Dr. Johnson from 16 companies from 2016 to 2025. The largest total came from Pfizer Inc.
How long has Dr. Clarissa E. Johnson been practicing?
Dr. Johnson graduated from medical school in 2003, 23 years ago.
Does Dr. Clarissa E. Johnson do research?
Dmand AI links 4 publications to Dr. Johnson. Dr. Johnson has worked on 4 clinical trials.
Who does Dr. Clarissa E. Johnson publish with?
Dr. Johnson's most frequent co-authors are Stella T. Chou, MD (2 shared papers), Theodosia A. Kalfa, MD (1 shared paper) and Marilyn Jo Telen, MD (1 shared paper).
What insurance does Dr. Clarissa E. Johnson accept?
Dr. Johnson is in network with 6 carriers, including Aetna, Elevance and United Healthcare. PPO plans come from the most carriers, 5. Check the plan with the practice before a visit.
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