Am J Clin Pathol
AdenocarcinomaAntibodies, NeoplasmAscitic Fluid
Dr. Ellen C. Ko, MD
NPI1124047501
- Publications
- 3
- Industry payments
- $233
- State licenses
- 3
- Year NPI issued
- 2006
- Practice address
- 400 N Pepper Ave, Colton, CA 92324
- Practice phone
- Call (909) 580-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Arrowhead Regional Medical Center
Colton, California
Find Dr. Ko'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. Ellen C. Ko is a pathologist in Colton, California
Dr. Ko practices at Arrowhead Regional Medical Center in Colton, California.
Dr. Ko's NPI, 1124047501, was assigned on July 18, 2006. Dr. Ko graduated from Tufts University School Of Medicine in 1992. Dr. Ko's California license number on file is G78277.
NPI and contact details
- NPI
- 1124047501NPI Registry (opens in a new tab)
- NPI enumeration date
- July 18, 2006
- NPI status
- Active
- Practice phone
- (909) 580-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Ellen C. Ko practices at Arrowhead Regional Medical Center in Colton, California
Dr. Ko's primary practice is Arrowhead Regional Medical Center, at 400 N Pepper Ave, Colton, CA 92324 in San Bernardino County. The practice phone is (909) 580-1000.
- Arrowhead Regional Medical Center400 N Pepper Ave, Colton, CA 92324 · San Bernardino CountyPhone(909) 580-1000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Ellen C. Ko is affiliated with 1 site of care
Dr. Ko's primary practice is Arrowhead Regional Medical Center in Colton, California.
Arrowhead Regional Medical CenterPrimary
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Ellen C. Ko's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ko practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Arrowhead Regional Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every site where Dr. Ko practices
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Ellen C. Ko is one of 1,354 pathologists in California
Anatomic pathology and clinical pathology is Dr. Ko's primary specialty in the NPI Registry, under taxonomy code 207ZP0102X. Dr. Ko is board certified in anatomic pathology & clinical pathology by the American Board of Pathology. Dmand AI has Dr. Ko's licenses on file in 3 states: California, Pennsylvania and Alabama.
Specialties and state licenses
- Anatomic pathology and clinical pathology, CaliforniaPrimary
- Pennsylvania license
- Alabama license
Pathologists near Dr. Ko
Counts of pathologists with a Dmand AI profile, by place and practice. Each opens the list.
1,354pathologists in California
4pathologists in Colton
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Ellen C. Ko's patients have a median age of 45
Across all payers, Dmand AI patient panel data puts Dr. Ko's median patient age at 45, with 90% women.
Dr. Ko's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 45
Patient panel by sex, all payers
- Women90%
- Men10%
Source: Dmand AI Patient Panel Data
Dr. Ellen C. Ko has 3 publications on record
Dmand AI links 3 papers to Dr. Ko. The most frequent topics are Biomarkers, Tumor and Pleural Effusion, Malignant.
Papers3
Topics Dr. Ko writes about most
- Biomarkers, Tumor
- Pleural Effusion, Malignant
Recent publications by Dr. Ko
Diagn Cytopathol
Biomarkers, TumorCarcinoma, Small CellImmunoenzyme Techniques
See who Dr. Ko researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Ko works with, so you can find a warm path to the right pathologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ellen C. Ko received $233 in industry payments from 2017 to 2022
CMS Open Payments shows 5 general payments to Dr. Ko from 5 drug and device companies from 2017 to 2022. Food and beverage make up the largest share, 100% of the total. Gilead Sciences, Inc. paid the most, $100.
General payments to Dr. Ko by program year, 2017 to 2022
Companies that paid Dr. Ko the most, 2017 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ellen C. Ko graduated from Tufts University School Of Medicine
Dr. Ko graduated from Tufts University School Of Medicine in 1992.
- Medical school
- Board certified in anatomic pathology & clinical pathology
- Board certified in cytopathology
Source: Dmand AI Professional Profile Data
Sources for Dr. Ellen C. Ko'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 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 |
| 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. Ellen C. Ko
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. Ellen C. Ko's NPI number?
Dr. Ellen C. Ko's NPI number is 1124047501. It was assigned on July 18, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ellen C. Ko?
Dr. Ellen C. Ko is a pathologist in Colton, California. The primary specialty in the NPI Registry is Anatomic Pathology & Clinical Pathology Physician (taxonomy code 207ZP0102X).
Where does Dr. Ellen C. Ko practice?
Dr. Ko practices at 400 N Pepper Ave, Colton, CA 92324. Dr. Ko's primary practice is Arrowhead Regional Medical Center in Colton, California.
What is Dr. Ellen C. Ko's office phone number?
The practice phone on file for Dr. Ko is (909) 580-1000.
What is Dr. Ellen C. Ko's medical license number?
Dr. Ko's California license number on file is G78277, one of the licenses on file in 3 states.
Which states has Dr. Ellen C. Ko been licensed in?
Dmand AI has state licenses on file for Dr. Ko in California (1994 to 2025), Pennsylvania (2005 to 2006) and Alabama (2000 to 2001).
Is Dr. Ellen C. Ko board certified?
Yes. Dr. Ko is board certified in anatomic pathology & clinical pathology by the American Board of Pathology.
Where did Dr. Ellen C. Ko go to medical school?
Dr. Ko graduated from Tufts University School Of Medicine in 1992.
Has Dr. Ellen C. Ko received payments from drug or device companies?
CMS Open Payments shows $233 in general payments to Dr. Ko from 5 companies from 2017 to 2022. The largest total came from Gilead Sciences, Inc.
How long has Dr. Ellen C. Ko been practicing?
Dr. Ko graduated from medical school in 1992, 34 years ago.
Does Dr. Ellen C. Ko do research?
Dmand AI links 3 publications to Dr. Ko.
Selling to anatomic pathology and clinical pathology practices?
See pathologists in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card