Dr. Patrick J. Lenehan, MD
- Medicare services, 2024
- 80
- Medicare patients, 2024
- 60
- Part D claims, 2024
- 67
- Publications
- 46
- Hospital affiliations
- 2
- Practice address
- 1401 South Grand Avenue, Los Angeles, CA 90015
- Practice phone
- Call (213) 748-2411
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Lenehan'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. Patrick J. Lenehan is an emergency medicine physician in Los Angeles, California
Dr. Lenehan practices at Dignity Health - California Hospital Medical Center in Los Angeles, California, part of CommonSpirit Health.
Dr. Lenehan's NPI, 1023247467, was assigned on July 7, 2009. Dr. Lenehan graduated from The Robert Larner, M.D. College of Medicine in 2009. Dr. Lenehan holds California license A124959.
- NPI
- 1023247467NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7719127844
- NPI enumeration date
- July 7, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (213) 748-2411
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Patrick J. Lenehan practices at Dignity Health - California Hospital Medical Center in Los Angeles, California
Dr. Lenehan's primary practice is Dignity Health - California Hospital Medical Center, at 1401 South Grand Avenue, Los Angeles, CA 90015 in Los Angeles County. The practice phone is (213) 748-2411.
- Dignity Health - California Hospital Medical Center1401 South Grand Avenue, Los Angeles, CA 90015 · Los Angeles CountyPhone(213) 748-2411
Source: Dmand AI Affiliation Data
Dr. Patrick J. Lenehan is affiliated with 2 sites of care and 2 medical groups
Dr. Lenehan's primary practice is Dignity Health - California Hospital Medical Center in Los Angeles, California, part of CommonSpirit Health. Dr. Lenehan is also affiliated with Dignity Health - Glendale Memorial Hospital and Health Center. The medical group on file is Golden State Emergency Physicians, Inc. Dmand AI also links Dr. Lenehan to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Patrick J. Lenehan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lenehan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dignity Health - California Hospital Medical Center | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Patrick J. Lenehan is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Lenehan's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Lenehan is board certified in emergency medicine by the American Board of Emergency Medicine. Dmand AI has Dr. Lenehan's licenses on file in 3 states: California, New Jersey and Rhode Island.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
- New Jersey license
- Surgery, Rhode Island
Emergency medicine physicians near Dr. Lenehan
Counts of emergency medicine 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. Patrick J. Lenehan billed Medicare for 80 services in 2024
CMS data shows 80 Medicare services from Dr. Lenehan across 4 procedure codes in 2024, for 60 Medicare patients. Medicare paid $7,150 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Lenehan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 432024: 5528%
- Tests and treatments
- 2023: 372024: 2532%
Dr. Lenehan compared with the California median for emergency medicine physicians, 2024
- Dr. Lenehan
- California median
- Medicare services
- 80vs 26570% below
- Medicare patients
- 60vs 24375% below
- Part D claims
- 11vs 6282% below
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Lenehan's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Lenehan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Lenehan and other emergency medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Patrick J. Lenehan treated 60 Medicare patients in 2024, average age 65
CMS counts 60 Medicare patients who saw Dr. Lenehan in 2024. The largest group is 65 to 74, with 29 patients. 75% of them have high blood pressure, and 72% have high cholesterol. Their average risk score is 3.08, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Lenehan's median patient age at 46, with 52% women.
Dr. Lenehan's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Lenehan's Medicare patients by sex, 2024
- Women3253%
- Men2847%
Chronic conditions among Dr. Lenehan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol72%
- Diabetes60%
- Arthritis55%
- Heart failure47%
- Chronic kidney disease42%
- Mood disorders42%
- Anxiety37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lenehan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 46
Patient panel by sex, all payers
- Women52%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Patrick J. Lenehan wrote 67 Medicare Part D claims in 2024
In 2024, Dr. Lenehan wrote 67 Medicare Part D claims for 49 patients. 93% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $26 in total drug cost. In 2017, CMS named 14 claims across 1 drug.
Dr. Lenehan's Part D claims by kind of drug, 2024
- Generic62 claims93%
- Brand-name and other5 claims7%
Dr. Lenehan's most prescribed drugs by claims, 2018
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Lenehan's Part D claims, 2024
- Antibiotics34%23 of 67 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2017 to 2018
- 2017
- 2018
- Claims for drugs CMS names
- 2017: 142018: 1121%
Drugs named by CMS: 1 in 2018, 1 in 2017.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Patrick J. Lenehan takes part in Medicare
Dr. Lenehan 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)
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Dr. Patrick J. Lenehan has 46 publications on record
Dmand AI links 46 papers to Dr. Lenehan, published from 2011 to 2025. 2021 was the busiest year, with 12. The most frequent topics are COVID-19, SARS-CoV-2 and COVID-19 Vaccines. Dr. Lenehan has published most often in PNAS Nexus. Dr. Lenehan's most frequent co-authors are John Charles O'Horo, MD, Lestat Ali, MD and Melanie Swift, MD.
Dr. Lenehan's papers by year, 2014 to 2025
Topics Dr. Lenehan writes about most
- COVID-19
- SARS-CoV-2
- COVID-19 Vaccines
- BNT162 Vaccine
- Electronic Health Records
- Vaccination
- Pancreatic Neoplasms
- 2019-nCoV Vaccine mRNA-1273
Dr. Lenehan's most frequent co-authors
- John Charles O'Horo, MD19 shared papers
- Lestat Ali, MD10 shared papers
- Melanie Swift, MD10 shared papers
Recent publications by Dr. Lenehan
See who Dr. Lenehan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Lenehan works with, so you can find a warm path to the right emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Patrick J. Lenehan received $96 in industry payments from 2017 to 2023
CMS Open Payments shows 2 general payments to Dr. Lenehan from 2 drug and device companies from 2017 to 2023. Food and beverage make up the largest share, 100% of the total. Medtronic, Inc. paid the most, $77.
General payments to Dr. Lenehan by program year, 2017 to 2023
Companies that paid Dr. Lenehan the most, 2017 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Patrick J. Lenehan graduated from The Robert Larner, M.D. College of Medicine
Dr. Lenehan graduated from The Robert Larner, M.D. College of Medicine in 2009.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. Patrick J. Lenehan accepts plans from 4 insurance carriers
Dr. Lenehan is in network with 4 carriers, including United Healthcare, CMS Medicare and Elevance. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.
- United Healthcare
- CMS Medicare
- Elevance
- Molina
Plan types Dr. Lenehan accepts, by number of carriers
- Medicare3
- HMO2
- POS1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Patrick J. Lenehan'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 services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| 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) |
| 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. Patrick J. Lenehan
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. Patrick J. Lenehan's NPI number?
Dr. Patrick J. Lenehan's NPI number is 1023247467. It was assigned on July 7, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Patrick J. Lenehan?
Dr. Patrick J. Lenehan is an emergency medicine physician in Los Angeles, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Patrick J. Lenehan practice?
Dr. Lenehan practices at 1401 South Grand Avenue, Los Angeles, CA 90015. Dr. Lenehan's primary practice is Dignity Health - California Hospital Medical Center in Los Angeles, California, part of CommonSpirit Health. Dmand AI also links Dr. Lenehan to 1 medical group.
What is Dr. Patrick J. Lenehan's office phone number?
The practice phone on file for Dr. Lenehan is (213) 748-2411.
What is Dr. Patrick J. Lenehan's medical license number?
Dr. Lenehan holds California license A124959, one of the licenses on file in 3 states.
Which states has Dr. Patrick J. Lenehan been licensed in?
Dmand AI has state licenses on file for Dr. Lenehan in California (2013 to 2027), New Jersey (2011 to 2015) and Rhode Island (2009 to 2010).
Which hospitals is Dr. Patrick J. Lenehan affiliated with?
Dr. Lenehan practices at Dignity Health - California Hospital Medical Center in Los Angeles, California. Dr. Lenehan is also affiliated with Dignity Health - Glendale Memorial Hospital and Health Center.
What medical group is Dr. Patrick J. Lenehan part of?
Dr. Lenehan is linked to Golden State Emergency Physicians, Inc. Dmand AI links Dr. Lenehan to 1 more medical group.
Does Dr. Patrick J. Lenehan accept Medicare?
Yes. CMS data shows Dr. Lenehan billed Medicare for 80 services in 2024, and Dr. Lenehan accepts Medicare assignment.
How many Medicare patients does Dr. Patrick J. Lenehan see?
CMS counts 60 Medicare patients who saw Dr. Lenehan in 2024, with an average age of 65.
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Is Dr. Patrick J. Lenehan board certified?
Yes. Dr. Lenehan is board certified in emergency medicine by the American Board of Emergency Medicine.
What services does Dr. Patrick J. Lenehan bill to Medicare?
In 2024, Dr. Lenehan's most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and critical care (99291).
Where did Dr. Patrick J. Lenehan go to medical school?
Dr. Lenehan graduated from The Robert Larner, M.D. College of Medicine in 2009.
What drugs does Dr. Patrick J. Lenehan prescribe most?
In 2018 Medicare Part D data, Dr. Lenehan's most prescribed drugs by claims were Prednisone.
Has Dr. Patrick J. Lenehan received payments from drug or device companies?
CMS Open Payments shows $96 in general payments to Dr. Lenehan from 2 companies from 2017 to 2023. The largest total came from Medtronic, Inc.
How long has Dr. Patrick J. Lenehan been practicing?
Dr. Lenehan graduated from medical school in 2009, 17 years ago.
Does Dr. Patrick J. Lenehan do research?
Dmand AI links 46 publications to Dr. Lenehan, published from 2011 to 2025.
Who does Dr. Patrick J. Lenehan publish with?
Dr. Lenehan's most frequent co-authors are John Charles O'Horo, MD (19 shared papers), Lestat Ali, MD (10 shared papers) and Melanie Swift, MD (10 shared papers).
What insurance does Dr. Patrick J. Lenehan accept?
Dr. Lenehan is in network with 4 carriers, including United Healthcare, CMS Medicare and Elevance. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.
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