Dr. Ryan S. O'Connor, MD
- Medicare services, 2024
- 39
- Medicare patients, 2024
- 41
- Part D claims, 2024
- 16
- Hospital affiliations
- 1
- Industry payments
- $316
- Practice address
- 1300 N Vermont Ave, Los Angeles, CA 90027
- Practice phone
- Call (213) 413-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. O'Connor'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. Ryan S. O'Connor is an emergency medicine physician in Los Angeles, California
Dr. O'Connor practices at CHA Hollywood Presbyterian Medical Center in Los Angeles, California, part of CHA Health Systems.
Dr. O'Connor's NPI, 1821101635, was assigned on August 16, 2006. Dr. O'Connor graduated from New York Medical College in 2002. Dr. O'Connor's California license number on file is A95130.
- NPI
- 1821101635NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1850311341
- NPI enumeration date
- August 16, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (213) 413-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ryan S. O'Connor practices at CHA Hollywood Presbyterian Medical Center in Los Angeles, California
Dr. O'Connor's primary practice is CHA Hollywood Presbyterian Medical Center, at 1300 N Vermont Ave, Los Angeles, CA 90027 in Los Angeles County. The practice phone is (213) 413-3000.
- CHA Hollywood Presbyterian Medical Center1300 N Vermont Ave, Los Angeles, CA 90027 · Los Angeles CountyPhone(213) 413-3000
Source: Dmand AI Affiliation Data
Dr. Ryan S. O'Connor is affiliated with 2 sites of care and 4 medical groups
Dr. O'Connor's primary practice is CHA Hollywood Presbyterian Medical Center in Los Angeles, California, part of CHA Health Systems. The medical group on file is CHA Hollywood Presbyterian Medical Center. Dmand AI also links Dr. O'Connor to 3 more medical groups and 1 breast imaging center, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ryan S. O'Connor's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. O'Connor practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| CHA Hollywood Presbyterian Medical Center | Available with a free account |
| +1 more site and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ryan S. O'Connor is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. O'Connor's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. O'Connor is board certified in emergency medicine by the American Board of Emergency Medicine. Dmand AI has Dr. O'Connor's licenses on file in 2 states: California and New York.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
- New York license
Emergency medicine physicians near Dr. O'Connor
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. Ryan S. O'Connor billed Medicare for 39 services in 2024
CMS data shows 39 Medicare services from Dr. O'Connor across 2 procedure codes in 2024, for 41 Medicare patients. Medicare paid $3,469 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. O'Connor's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 392024: 2438%
- Tests and treatments
- 2023: 02024: 15
Dr. O'Connor compared with the California median for emergency medicine physicians, 2024
- Dr. O'Connor
- California median
- Medicare services
- 39vs 26585% below
- Medicare patients
- 41vs 24383% below
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. O'Connor'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. O'Connor 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. Ryan S. O'Connor treated 41 Medicare patients in 2024, average age 75
CMS counts 41 Medicare patients who saw Dr. O'Connor in 2024. The largest group is 75 to 84, with 16 patients. 75% of them have diabetes, and 75% have high blood pressure. Their average risk score is 3.53, 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. O'Connor's median patient age at 54, with 57% women.
Dr. O'Connor's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. O'Connor's Medicare patients by sex, 2024
- Women2254%
- Men1946%
Chronic conditions among Dr. O'Connor's Medicare patients, 2024
- Diabetes75%
- High blood pressure75%
- High cholesterol75%
- Arthritis71%
- Chronic kidney disease68%
- Heart failure68%
- Mood disorders68%
- Depression66%
Share of Medicare patients with each condition. A patient can have several.
Dr. O'Connor's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 54
Patient panel by sex, all payers
- Women57%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ryan S. O'Connor wrote 16 Medicare Part D claims in 2024
In 2024, Dr. O'Connor wrote 16 Medicare Part D claims. 94% of them were for generic drugs.
Dr. O'Connor's Part D claims by kind of drug, 2024
- Generic15 claims94%
- Brand-name and other1 claims6%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Ryan S. O'Connor takes part in Medicare
Dr. O'Connor 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. Ryan S. O'Connor received $316 in industry payments from 2017 to 2023
CMS Open Payments shows 2 general payments to Dr. O'Connor from 2 drug and device companies from 2017 to 2023. Food and beverage make up the largest share, 100% of the total. Inari Medical, Inc. paid the most, $190.
General payments to Dr. O'Connor by program year, 2017 to 2023
Companies that paid Dr. O'Connor 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. Ryan S. O'Connor graduated from New York Medical College
Dr. O'Connor graduated from New York Medical College in 2002.
- Medical school
- Board certified in emergency medicine
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. Ryan S. O'Connor accepts plans from 2 insurance carriers
Dr. O'Connor is in network with 2 carriers, including CMS Medicare and Molina. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
- CMS Medicare
- Molina
Source: Dmand AI Insurance Network Data
Sources for Dr. Ryan S. O'Connor'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 (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) |
| 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. Ryan S. O'Connor
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. Ryan S. O'Connor's NPI number?
Dr. Ryan S. O'Connor's NPI number is 1821101635. It was assigned on August 16, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ryan S. O'Connor?
Dr. Ryan S. O'Connor 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. Ryan S. O'Connor practice?
Dr. O'Connor practices at 1300 N Vermont Ave, Los Angeles, CA 90027. Dr. O'Connor's primary practice is CHA Hollywood Presbyterian Medical Center in Los Angeles, California, part of CHA Health Systems. Dmand AI also links Dr. O'Connor to 3 medical groups and 1 breast imaging center.
What is Dr. Ryan S. O'Connor's office phone number?
The practice phone on file for Dr. O'Connor is (213) 413-3000.
What is Dr. Ryan S. O'Connor's medical license number?
Dr. O'Connor's California license number on file is A95130, one of the licenses on file in 2 states.
Which states has Dr. Ryan S. O'Connor been licensed in?
Dmand AI has state licenses on file for Dr. O'Connor in California (2006 to 2025) and New York (2004 to 2007).
Which hospitals is Dr. Ryan S. O'Connor affiliated with?
Dr. O'Connor practices at CHA Hollywood Presbyterian Medical Center in Los Angeles, California.
What medical group is Dr. Ryan S. O'Connor part of?
Dr. O'Connor is linked to CHA Hollywood Presbyterian Medical Center. Dmand AI links Dr. O'Connor to 3 more medical groups.
Does Dr. Ryan S. O'Connor accept Medicare?
Yes. CMS data shows Dr. O'Connor billed Medicare for 39 services in 2024, and Dr. O'Connor accepts Medicare assignment.
How many Medicare patients does Dr. Ryan S. O'Connor see?
CMS counts 41 Medicare patients who saw Dr. O'Connor in 2024, with an average age of 75.
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Is Dr. Ryan S. O'Connor board certified?
Yes. Dr. O'Connor is board certified in emergency medicine by the American Board of Emergency Medicine.
What services does Dr. Ryan S. O'Connor bill to Medicare?
In 2024, Dr. O'Connor's most billed Medicare services were emergency department visit (99285) and heart test or procedure (93010).
Where did Dr. Ryan S. O'Connor go to medical school?
Dr. O'Connor graduated from New York Medical College in 2002.
Has Dr. Ryan S. O'Connor received payments from drug or device companies?
CMS Open Payments shows $316 in general payments to Dr. O'Connor from 2 companies from 2017 to 2023. The largest total came from Inari Medical, Inc.
How long has Dr. Ryan S. O'Connor been practicing?
Dr. O'Connor graduated from medical school in 2002, 24 years ago.
What insurance does Dr. Ryan S. O'Connor accept?
Dr. O'Connor is in network with 2 carriers, including CMS Medicare and Molina. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
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