Dr. Ruben Jonas Colman, MD
- Publications
- 30
- Hospital affiliations
- 1
- Industry payments
- $56
- Medical groups
- 2
- Insurance carriers
- 8
- Practice address
- 725 Welch Road, Palo Alto, CA 94304
- Practice phone
- Call (650) 497-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Colman'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. Ruben Jonas Colman is a pediatric gastroenterology physician in Palo Alto, California
Dr. Colman practices at Lucile Packard Children's Hospital Stanford in Palo Alto, California, part of Stanford University.
Dr. Colman's NPI, 1942695234, was assigned on April 2, 2015. Dr. Colman graduated from University of Amsterdam Faculty of Medicine in 2012. Dr. Colman holds California license A181455.
- NPI
- 1942695234NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3678949047
- NPI enumeration date
- April 2, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (650) 497-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ruben Jonas Colman practices at Lucile Packard Children's Hospital Stanford in Palo Alto, California
Dr. Colman's primary practice is Lucile Packard Children's Hospital Stanford, at 725 Welch Road, Palo Alto, CA 94304 in Santa Clara County. The practice phone is (650) 497-8000.
- Lucile Packard Children's Hospital Stanford725 Welch Road, Palo Alto, CA 94304 · Santa Clara CountyPhone(650) 497-8000
Source: Dmand AI Affiliation Data
Dr. Ruben Jonas Colman is affiliated with 1 site of care and 2 medical groups
Dr. Colman's primary practice is Lucile Packard Children's Hospital Stanford in Palo Alto, California, part of Stanford University. The medical group on file is Stanford Health Care. Dmand AI also links Dr. Colman to 1 more medical group, named with a free account. Dr. Colman's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ruben Jonas Colman's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Colman practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Lucile Packard Children's Hospital Stanford | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ruben Jonas Colman is one of 251 pediatric gastroenterology physicians in California
Pediatric gastroenterology is Dr. Colman's primary specialty in the NPI Registry, under taxonomy code 2080P0206X. Dr. Colman is board certified in pediatric gastroenterology by the American Board of Pediatrics. Dmand AI has Dr. Colman's licenses on file in 3 states: California, Ohio and Pennsylvania.
Specialties and state licenses
- Pediatric gastroenterology, CaliforniaPrimary
- Ohio license
- Pennsylvania license
Pediatric gastroenterology physicians near Dr. Colman
Counts of pediatric gastroenterology 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. Ruben Jonas Colman's patients have a median age of 17
Across all payers, Dmand AI patient panel data puts Dr. Colman's median patient age at 17, with 42% women.
Dr. Colman's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 17
Patient panel by sex, all payers
- Women42%
- Men56%
Source: Dmand AI Patient Panel Data
How Dr. Ruben Jonas Colman takes part in Medicare
Dr. Colman 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)
Dr. Ruben Jonas Colman has 30 publications on record
Dmand AI links 30 papers to Dr. Colman, published from 2014 to 2025. 2015 was the busiest year, with 4. The most frequent topics are Crohn Disease, Inflammatory Bowel Diseases and Infliximab. Dr. Colman has published most often in Inflamm Bowel Dis. Dr. Colman's most frequent co-authors are Michael Joshua Rosen, MD, Brendan Michael Boyle, MD and Lee A. Denson, MD.
Dr. Colman's papers by year, 2014 to 2025
Topics Dr. Colman writes about most
- Crohn Disease
- Inflammatory Bowel Diseases
- Infliximab
- Gastrointestinal Agents
- Colitis, Ulcerative
- Antibodies
- Feces
- Remission Induction
Dr. Colman's most frequent co-authors
- Michael Joshua Rosen, MD6 shared papers
- Brendan Michael Boyle, MD4 shared papers
- Lee A. Denson, MD4 shared papers
Recent publications by Dr. Colman
Aliment Pharmacol Ther
See who Dr. Colman researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Colman works with, so you can find a warm path to the right pediatric gastroenterology physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ruben Jonas Colman received $56 in industry payments in 2025
CMS Open Payments shows 1 general payment to Dr. Colman from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $56.
Companies that paid Dr. Colman the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ruben Jonas Colman serves on 3 committees
Dr. Colman serves on IBD Committee - NASPGHAN, Pediatric Affairs Committee - Crohn's Colitis Foundation and Data Science Special Interest Group - NASPGHAN.
Dr. Colman's committees and leadership roles
- IBD Committee - NASPGHANCommittee Member
- 2022 to present
- Pediatric Affairs Committee - Crohn's Colitis FoundationCommittee Member
- 2022 to present
- Data Science Special Interest Group - NASPGHANSIG Member
- 2021 to present
- Research Committee - NASPGHANCommittee Member
- 2019 to 2022
Source: Dmand AI Professional Profile Data
Dr. Ruben Jonas Colman graduated from University of Amsterdam Faculty of Medicine
Dr. Colman graduated from University of Amsterdam Faculty of Medicine in 2012. Dr. Colman is a member of AAP, AMA and NASPGHAN.
- Medical school
- Board certified in pediatric gastroenterology
- Board certified in pediatrics
Source: Dmand AI Professional Profile Data
Dr. Ruben Jonas Colman accepts plans from 8 insurance carriers
Dr. Colman is in network with 8 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- United Healthcare
- Blue Cross and Blue Shield of Kansas City
- NV State Medicaid
Plan types Dr. Colman accepts, by number of carriers
- Medicare5
- PPO5
- HMO3
- POS3
- EPO2
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Ruben Jonas Colman'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 |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Ruben Jonas Colman
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What is Dr. Ruben Jonas Colman's NPI number?
Dr. Ruben Jonas Colman's NPI number is 1942695234. It was assigned on April 2, 2015, and it is active in the NPI Registry.
What kind of doctor is Dr. Ruben Jonas Colman?
Dr. Ruben Jonas Colman is a pediatric gastroenterology physician in Palo Alto, California. The primary specialty in the NPI Registry is Pediatric Gastroenterology Physician (taxonomy code 2080P0206X).
Where does Dr. Ruben Jonas Colman practice?
Dr. Colman practices at 725 Welch Road, Palo Alto, CA 94304. Dr. Colman's primary practice is Lucile Packard Children's Hospital Stanford in Palo Alto, California, part of Stanford University. Dmand AI also links Dr. Colman to 1 medical group.
What is Dr. Ruben Jonas Colman's office phone number?
The practice phone on file for Dr. Colman is (650) 497-8000.
What is Dr. Ruben Jonas Colman's medical license number?
Dr. Colman holds California license A181455, one of the licenses on file in 3 states.
Which states has Dr. Ruben Jonas Colman been licensed in?
Dmand AI has state licenses on file for Dr. Colman in California (2022 to 2026), Ohio (2018 to 2023) and Pennsylvania (2016 to 2017).
Which hospitals is Dr. Ruben Jonas Colman affiliated with?
Dr. Colman practices at Lucile Packard Children's Hospital Stanford in Palo Alto, California.
What medical group is Dr. Ruben Jonas Colman part of?
Dr. Colman is linked to Stanford Health Care. Dmand AI links Dr. Colman to 1 more medical group.
Does Dr. Ruben Jonas Colman accept Medicare?
Yes. CMS lists Dr. Colman as accepting Medicare assignment.
Is Dr. Ruben Jonas Colman board certified?
Yes. Dr. Colman is board certified in pediatric gastroenterology by the American Board of Pediatrics.
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Where did Dr. Ruben Jonas Colman go to medical school?
Dr. Colman graduated from University of Amsterdam Faculty of Medicine in 2012.
Has Dr. Ruben Jonas Colman received payments from drug or device companies?
CMS Open Payments shows $56 in general payments to Dr. Colman from 1 company from 2025 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Ruben Jonas Colman been practicing?
Dr. Colman graduated from medical school in 2012, 14 years ago.
Does Dr. Ruben Jonas Colman do research?
Dmand AI links 30 publications to Dr. Colman, published from 2014 to 2025.
Who does Dr. Ruben Jonas Colman publish with?
Dr. Colman's most frequent co-authors are Michael Joshua Rosen, MD (6 shared papers), Brendan Michael Boyle, MD (4 shared papers) and Lee A. Denson, MD (4 shared papers).
What insurance does Dr. Ruben Jonas Colman accept?
Dr. Colman is in network with 8 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
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