Dr. John T. Ley, MD
- Affiliated sites
- 1
- Medical group
- 1
- Insurance carriers
- 2
- State licenses
- 3
- Year NPI issued
- 2010
- Practice address
- 9965 Sierra Ave, Fontana, CA 92335
- Practice phone
- Call (909) 427-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kaiser Permanente - Fontana Medical Center
Fontana, California
Find Dr. Ley'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. John T. Ley is an anesthesiologist in Fontana, California
Dr. Ley practices at Kaiser Permanente - Fontana Medical Center in Fontana, California.
Dr. Ley's NPI, 1811290679, was assigned on December 15, 2010. Dr. Ley graduated from Medical College of Ohio in 2006. Dr. Ley's California license number on file is A111233.
- NPI
- 1811290679NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9537332044
- NPI enumeration date
- December 15, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (909) 427-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John T. Ley practices at Kaiser Permanente - Fontana Medical Center in Fontana, California
Dr. Ley's primary practice is Kaiser Permanente - Fontana Medical Center, at 9965 Sierra Ave, Fontana, CA 92335 in San Bernardino County. The practice phone is (909) 427-5000.
- Kaiser Permanente - Fontana Medical Center9965 Sierra Ave, Fontana, CA 92335 · San Bernardino CountyPhone(909) 427-5000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John T. Ley is affiliated with 2 sites of care and 1 medical group
Dr. Ley's primary practice is Kaiser Permanente - Fontana Medical Center in Fontana, California. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Ley to 1 more community health center, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John T. Ley's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ley practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente - Fontana Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John T. Ley is one of 6,593 anesthesiologists in California
Anesthesiology is Dr. Ley's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Ley is board certified in anesthesiology by the American Board of Anesthesiology. Dmand AI has Dr. Ley's licenses on file in 3 states: California, Florida and Pennsylvania.
Specialties and state licenses
- Anesthesiology, CaliforniaPrimary
- Florida license
- Pennsylvania license
Anesthesiologists near Dr. Ley
Counts of anesthesiologists 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. John T. Ley's patients have a median age of 31
Across all payers, Dmand AI patient panel data puts Dr. Ley's median patient age at 31, with 67% women.
Dr. Ley's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 31
Patient panel by sex, all payers
- Women67%
- Men32%
Source: Dmand AI Patient Panel Data
How Dr. John T. Ley takes part in Medicare
Dr. Ley 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. John T. Ley has 1 award and honors on record
Dmand AI lists 1 award for Dr. Ley, most recently CMS Stage 1 2012 in 2011.
Awards and honors for Dr. Ley
- 2011
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. John T. Ley graduated from Medical College of Ohio
Dr. Ley graduated from Medical College of Ohio in 2006.
- Medical school
- Board certified in anesthesiology
Source: Dmand AI Professional Profile Data
Dr. John T. Ley accepts plans from 2 insurance carriers
Dr. Ley is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Ley accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. John T. Ley'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 DataDmand 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) |
| 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. John T. Ley
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. John T. Ley's NPI number?
Dr. John T. Ley's NPI number is 1811290679. It was assigned on December 15, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. John T. Ley?
Dr. John T. Ley is an anesthesiologist in Fontana, California. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. John T. Ley practice?
Dr. Ley practices at 9965 Sierra Ave, Fontana, CA 92335. Dr. Ley's primary practice is Kaiser Permanente - Fontana Medical Center in Fontana, California. Dmand AI also links Dr. Ley to 1 community health center.
What is Dr. John T. Ley's office phone number?
The practice phone on file for Dr. Ley is (909) 427-5000.
What is Dr. John T. Ley's medical license number?
Dr. Ley's California license number on file is A111233, one of the licenses on file in 3 states.
Which states has Dr. John T. Ley been licensed in?
Dmand AI has state licenses on file for Dr. Ley in California (2010 to 2025), Florida (1993 to 2018) and Pennsylvania (2006 to 2014).
What medical group is Dr. John T. Ley part of?
Dr. Ley is linked to Southern California Permanente Medical Group.
Does Dr. John T. Ley accept Medicare?
Yes. CMS lists Dr. Ley as accepting Medicare assignment.
Is Dr. John T. Ley board certified?
Yes. Dr. Ley is board certified in anesthesiology by the American Board of Anesthesiology.
Where did Dr. John T. Ley go to medical school?
Dr. Ley graduated from Medical College of Ohio in 2006.
How long has Dr. John T. Ley been practicing?
Dr. Ley graduated from medical school in 2006, 20 years ago.
What insurance does Dr. John T. Ley accept?
Dr. Ley is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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