Kathleen Messenger Ostrom
- Publications
- 2
- Hospital affiliations
- 1
- Industry payments
- $7
- Medical group
- 1
- Insurance carriers
- 14
- Practice address
- 4650 Sunset Blvd, MS 108, Los Angeles, CA 90027
- Practice phone
- Call (323) 669-2164
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Kathleen Ostrom'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.
Kathleen Messenger Ostrom is a pediatrician in Los Angeles, California
Kathleen Ostrom practices at Children's Hospital Los Angeles in Los Angeles, California, part of Children's Hospital Los Angeles.
Kathleen Ostrom's NPI, 1992906234, was assigned on May 31, 2007. Kathleen Ostrom graduated from Feinberg School of Medicine in 2004. Kathleen Ostrom holds California license A96077.
- NPI
- 1992906234NPI Registry (opens in a new tab)
- NPI enumeration date
- May 31, 2007
- NPI status
- Active
- Practice phone
- (323) 669-2164
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Kathleen Messenger Ostrom practices at Children's Hospital Los Angeles in Los Angeles, California
Kathleen Ostrom's primary practice is Children's Hospital Los Angeles, at 4650 Sunset Blvd, MS 108, Los Angeles, CA 90027 in Los Angeles County. The practice phone is (323) 669-2164.
- Children's Hospital Los Angeles4650 Sunset Blvd, MS 108, Los Angeles, CA 90027 · Los Angeles CountyPhone(323) 669-2164
Source: Dmand AI Affiliation Data
Kathleen Messenger Ostrom is affiliated with 1 site of care and 1 medical group
Kathleen Ostrom's primary practice is Children's Hospital Los Angeles in Los Angeles, California, part of Children's Hospital Los Angeles. The medical group on file is Children's Hospital Los Angeles Medical Group.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Kathleen Messenger Ostrom's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Kathleen Ostrom practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Children's Hospital Los Angeles | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Children's Hospital Los Angeles and 6.2K+ hospitals, with verified contacts in the same login.
Kathleen Messenger Ostrom is one of 8,236 pediatricians in California
Pediatrics is Kathleen Ostrom's primary specialty in the NPI Registry, under taxonomy code 208000000X. Kathleen Ostrom is board certified in pediatrics by the American Board of Pediatrics. Kathleen Ostrom is licensed in California.
Specialties and state licenses
- Pediatrics, CaliforniaPrimary
Pediatricians near Kathleen Ostrom
Counts of pediatricians 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
Kathleen Messenger Ostrom's patients have a median age of 10
Across all payers, Dmand AI patient panel data puts Kathleen Ostrom's median patient age at 10, with 49% women.
Kathleen Ostrom's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 10
Patient panel by sex, all payers
- Women49%
- Men51%
Source: Dmand AI Patient Panel Data
Kathleen Messenger Ostrom has 2 publications on record
Dmand AI links 2 papers to Kathleen Ostrom in 2018. Kathleen Ostrom's most frequent co-authors are Dwight M. Bissell, MD, Shiu-Yi Emily Chen, MD and Mark Hendrik Corden, MD.
Kathleen Ostrom's most frequent co-authors
- Dwight M. Bissell, MD1 shared paper
- Shiu-Yi Emily Chen, MD1 shared paper
- Mark Hendrik Corden, MD1 shared paper
Recent publications by Kathleen Ostrom
See who Kathleen Ostrom researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Kathleen Ostrom works with, so you can find a warm path to the right pediatricians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Kathleen Messenger Ostrom received $7 in industry payments in 2017
CMS Open Payments shows 2 general payments to Kathleen Ostrom from 1 drug or device company in 2017. Food and beverage make up the largest share, 100% of the total. ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) paid the most, $7.
Companies that paid Kathleen Ostrom the most, 2017 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Kathleen Messenger Ostrom graduated from Feinberg School of Medicine
Kathleen Ostrom graduated from Feinberg School of Medicine in 2004. Kathleen Ostrom is a member of AOA.
- Medical school
- Board certified in pediatrics
Source: Dmand AI Professional Profile Data
Kathleen Messenger Ostrom accepts plans from 14 insurance carriers
Kathleen Ostrom is in network with 14 carriers, including Aetna, United Healthcare and Elevance. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- Elevance
- Alliant Health Plans
- Blue Cross Blue Shield of Michigan
- HCSC
- LA Care
- Aspirus Health Plan
- +6 more carriersWith a free account
Plan types Kathleen Ostrom accepts, by number of carriers
- PPO8
- HMO7
- EPO4
- POS4
- Medicaid2
- Medicare2
Source: Dmand AI Insurance Network Data
Sources for Kathleen Messenger Ostrom'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 |
| 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 Kathleen Messenger Ostrom
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Kathleen Messenger Ostrom's NPI number?
Kathleen Messenger Ostrom's NPI number is 1992906234. It was assigned on May 31, 2007, and it is active in the NPI Registry.
What does Kathleen Messenger Ostrom specialize in?
Kathleen Messenger Ostrom is a pediatrician in Los Angeles, California. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Kathleen Messenger Ostrom practice?
Kathleen Ostrom practices at 4650 Sunset Blvd, MS 108, Los Angeles, CA 90027. Kathleen Ostrom's primary practice is Children's Hospital Los Angeles in Los Angeles, California, part of Children's Hospital Los Angeles.
What is Kathleen Messenger Ostrom's office phone number?
The practice phone on file for Kathleen Ostrom is (323) 669-2164.
What is Kathleen Messenger Ostrom's medical license number?
Kathleen Ostrom holds California license A96077.
Which hospitals is Kathleen Messenger Ostrom affiliated with?
Kathleen Ostrom practices at Children's Hospital Los Angeles in Los Angeles, California.
What medical group is Kathleen Messenger Ostrom part of?
Kathleen Ostrom is linked to Children's Hospital Los Angeles Medical Group.
Is Kathleen Messenger Ostrom board certified?
Yes. Kathleen Ostrom is board certified in pediatrics by the American Board of Pediatrics.
Where did Kathleen Messenger Ostrom go to medical school?
Kathleen Ostrom graduated from Feinberg School of Medicine in 2004.
Has Kathleen Messenger Ostrom received payments from drug or device companies?
CMS Open Payments shows $7 in general payments to Kathleen Ostrom from 1 company from 2017 to 2017. The largest total came from ZOLL Services LLC (A/K/A ZOLL LifeCor Corp).
Show 4 more questionsShow fewer questions
How long has Kathleen Messenger Ostrom been practicing?
Kathleen Ostrom graduated from medical school in 2004, 22 years ago.
Does Kathleen Messenger Ostrom do research?
Dmand AI links 2 publications to Kathleen Ostrom.
Who does Kathleen Messenger Ostrom publish with?
Kathleen Ostrom's most frequent co-authors are Dwight M. Bissell, MD (1 shared paper), Shiu-Yi Emily Chen, MD (1 shared paper) and Mark Hendrik Corden, MD (1 shared paper).
What insurance does Kathleen Messenger Ostrom accept?
Kathleen Ostrom is in network with 14 carriers, including Aetna, United Healthcare and Elevance. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
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