Dr. Matthew S. Keefer, MD
- Hospital affiliations
- 1
- Industry payments
- $31
- Medical group
- 1
- Insurance carriers
- 10
- State license
- 1
- 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 Dr. Keefer'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. Matthew S. Keefer is a pediatrician in Los Angeles, California
Dr. Keefer practices at Children's Hospital Los Angeles in Los Angeles, California, part of Children's Hospital Los Angeles.
Dr. Keefer's NPI, 1972609352, was assigned on September 15, 2006. Dr. Keefer graduated from UCSF School of Medicine in 1999. Dr. Keefer holds California license A74609.
- NPI
- 1972609352NPI Registry (opens in a new tab)
- NPI enumeration date
- September 15, 2006
- NPI status
- Active
- Practice phone
- (323) 669-2164
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Matthew S. Keefer practices at Children's Hospital Los Angeles in Los Angeles, California
Dr. Keefer'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
Dr. Matthew S. Keefer is affiliated with 1 site of care and 1 medical group
Dr. Keefer'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 Dr. Matthew S. Keefer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Keefer 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.
Dr. Matthew S. Keefer is one of 8,236 pediatricians in California
Pediatrics is Dr. Keefer's primary specialty in the NPI Registry, under taxonomy code 208000000X. Dr. Keefer is board certified in pediatrics by the American Board of Pediatrics. Dr. Keefer is licensed in California.
Specialties and state licenses
- Pediatrics, CaliforniaPrimary
Pediatricians near Dr. Keefer
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
Dr. Matthew S. Keefer's patients have a median age of 12
Across all payers, Dmand AI patient panel data puts Dr. Keefer's median patient age at 12, with 48% women.
Dr. Keefer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 12
Patient panel by sex, all payers
- Women48%
- Men52%
Source: Dmand AI Patient Panel Data
Dr. Matthew S. Keefer received $31 in industry payments in 2018
CMS Open Payments shows 2 general payments to Dr. Keefer from 1 drug or device company in 2018. Food and beverage make up the largest share, 100% of the total. Cranial Technologies, Inc paid the most, $31.
Companies that paid Dr. Keefer the most, 2018 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Matthew S. Keefer has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Keefer.
Awards and honors for Dr. Keefer
- Undated
- AAP Fellow
- Super Doc
Source: Dmand AI Professional Profile Data
Dr. Matthew S. Keefer graduated from UCSF School of Medicine
Dr. Keefer graduated from UCSF School of Medicine in 1999. Dr. Keefer is a member of AAP.
- Medical school
- Board certified in pediatrics
- Board certified in clinical informatics
Source: Dmand AI Professional Profile Data
Dr. Matthew S. Keefer accepts plans from 10 insurance carriers
Dr. Keefer is in network with 10 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. HMO plans come from the most carriers, 5. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- Blue Cross Blue Shield of Michigan
- LA Care
- Molina
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- Elevance
- +2 more carriersWith a free account
Plan types Dr. Keefer accepts, by number of carriers
- HMO5
- PPO5
- POS4
- Medicare3
- EPO2
- Medicaid2
Source: Dmand AI Insurance Network Data
Sources for Dr. Matthew S. Keefer'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 |
| 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. Matthew S. Keefer
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. Matthew S. Keefer's NPI number?
Dr. Matthew S. Keefer's NPI number is 1972609352. It was assigned on September 15, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Matthew S. Keefer?
Dr. Matthew S. Keefer is a pediatrician in Los Angeles, California. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. Matthew S. Keefer practice?
Dr. Keefer practices at 4650 Sunset Blvd, MS 108, Los Angeles, CA 90027. Dr. Keefer's primary practice is Children's Hospital Los Angeles in Los Angeles, California, part of Children's Hospital Los Angeles.
What is Dr. Matthew S. Keefer's office phone number?
The practice phone on file for Dr. Keefer is (323) 669-2164.
What is Dr. Matthew S. Keefer's medical license number?
Dr. Keefer holds California license A74609.
Which hospitals is Dr. Matthew S. Keefer affiliated with?
Dr. Keefer practices at Children's Hospital Los Angeles in Los Angeles, California.
What medical group is Dr. Matthew S. Keefer part of?
Dr. Keefer is linked to Children's Hospital Los Angeles Medical Group.
Is Dr. Matthew S. Keefer board certified?
Yes. Dr. Keefer is board certified in pediatrics by the American Board of Pediatrics.
Where did Dr. Matthew S. Keefer go to medical school?
Dr. Keefer graduated from UCSF School of Medicine in 1999.
Has Dr. Matthew S. Keefer received payments from drug or device companies?
CMS Open Payments shows $31 in general payments to Dr. Keefer from 1 company from 2018 to 2018. The largest total came from Cranial Technologies, Inc.
How long has Dr. Matthew S. Keefer been practicing?
Dr. Keefer graduated from medical school in 1999, 27 years ago.
What insurance does Dr. Matthew S. Keefer accept?
Dr. Keefer is in network with 10 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. HMO plans come from the most carriers, 5. Check the plan with the practice before a visit.
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