Dr. Lydia Joy Koroshetz, MD
- Medicare services, 2024
- 395
- Medicare patients, 2024
- 390
- Part D claims, 2024
- 115
- Hospital affiliations
- 4
- Medical group
- 1
- Practice address
- 300 W Huntington Dr, Arcadia, CA 91007
- Practice phone
- Call (626) 898-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Koroshetz'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. Lydia Joy Koroshetz is an emergency medicine physician in Arcadia, California
Dr. Koroshetz practices at USC Arcadia Hospital in Arcadia, California, part of University of Southern California.
Dr. Koroshetz's NPI, 1245855485, was assigned on June 13, 2020. Dr. Koroshetz graduated from Georgetown University School Of Medicine in 2020. Dr. Koroshetz's Pennsylvania license number on file is MT220245.
- NPI
- 1245855485NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8325460876
- NPI enumeration date
- June 13, 2020
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (626) 898-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Lydia Joy Koroshetz practices at USC Arcadia Hospital in Arcadia, California
Dr. Koroshetz's primary practice is USC Arcadia Hospital, at 300 W Huntington Dr, Arcadia, CA 91007 in Los Angeles County. The practice phone is (626) 898-8000.
- USC Arcadia Hospital300 W Huntington Dr, Arcadia, CA 91007 · Los Angeles CountyPhone(626) 898-8000
Source: Dmand AI Affiliation Data
Dr. Lydia Joy Koroshetz is affiliated with 5 sites of care and 1 medical group
Dr. Koroshetz's primary practice is USC Arcadia Hospital in Arcadia, California, part of University of Southern California. Dr. Koroshetz is also affiliated with Los Angeles General Medical Center. The medical group on file is USC Care Medical Group. Dmand AI also links Dr. Koroshetz to 2 more hospitals and 1 other site, 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. Lydia Joy Koroshetz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Koroshetz practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| USC Arcadia Hospital | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Lydia Joy Koroshetz is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Koroshetz's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Koroshetz is board certified in emergency medicine by the American Board of Emergency Medicine. Dmand AI has Dr. Koroshetz's licenses on file in 2 states: Pennsylvania and California.
Specialties and state licenses
- Emergency medicine, PennsylvaniaPrimary
- California license
Emergency medicine physicians near Dr. Koroshetz
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. Lydia Joy Koroshetz billed Medicare for 395 services in 2024
CMS data shows 395 Medicare services from Dr. Koroshetz across 4 procedure codes in 2024, for 390 Medicare patients. Medicare paid $48,820 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Koroshetz's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1222024: 375207%
- Tests and treatments
- 2023: 02024: 20
Dr. Koroshetz compared with the California median for emergency medicine physicians, 2024
- Dr. Koroshetz
- California median
- Medicare services
- 395vs 26549% above
- Medicare patients
- 390vs 24360% above
- Part D claims
- 34vs 6245% below
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Koroshetz'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. Koroshetz 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. Lydia Joy Koroshetz treated 390 Medicare patients in 2024, average age 77
CMS counts 390 Medicare patients who saw Dr. Koroshetz in 2024. The largest group is 75 to 84, with 124 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 60% are also on Medicaid. Their average risk score is 2.64, 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. Koroshetz's median patient age at 56, with 58% women.
Dr. Koroshetz's Medicare patients by age, 2024
Dr. Koroshetz's Medicare patients by sex, 2024
- Women21154%
- Men17946%
Chronic conditions among Dr. Koroshetz's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis62%
- Diabetes58%
- Chronic kidney disease52%
- Ischemic heart disease47%
- Heart failure46%
- Mood disorders43%
Share of Medicare patients with each condition. A patient can have several.
Dr. Koroshetz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 56
Patient panel by sex, all payers
- Women58%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Lydia Joy Koroshetz wrote 115 Medicare Part D claims in 2024
In 2024, Dr. Koroshetz wrote 115 Medicare Part D claims for 91 patients. 95% of them were for generic drugs. CMS names the drug for 34 of them, across 2 drugs with 11 or more claims each, at $350 in total drug cost.
Dr. Koroshetz's Part D claims by kind of drug, 2024
- Generic109 claims95%
- Brand-name and other6 claims5%
Dr. Koroshetz's most prescribed drugs by claims, 2024
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. Koroshetz's Part D claims, 2024
- Antibiotics51%59 of 115 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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. Lydia Joy Koroshetz takes part in Medicare
Dr. Koroshetz 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. Lydia Joy Koroshetz graduated from Georgetown University School Of Medicine
Dr. Koroshetz graduated from Georgetown University School Of Medicine in 2020.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. Lydia Joy Koroshetz accepts plans from 5 insurance carriers
Dr. Koroshetz is in network with 5 carriers, including United Healthcare, Blue Cross Blue Shield of Michigan and Elevance. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Elevance
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
Plan types Dr. Koroshetz accepts, by number of carriers
- Medicare3
- POS3
- PPO3
- HMO2
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Lydia Joy Koroshetz'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) |
| 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. Lydia Joy Koroshetz
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. Lydia Joy Koroshetz's NPI number?
Dr. Lydia Joy Koroshetz's NPI number is 1245855485. It was assigned on June 13, 2020, and it is active in the NPI Registry.
What kind of doctor is Dr. Lydia Joy Koroshetz?
Dr. Lydia Joy Koroshetz is an emergency medicine physician in Arcadia, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Lydia Joy Koroshetz practice?
Dr. Koroshetz practices at 300 W Huntington Dr, Arcadia, CA 91007. Dr. Koroshetz's primary practice is USC Arcadia Hospital in Arcadia, California, part of University of Southern California. Dmand AI also links Dr. Koroshetz to 2 hospitals and 1 other site.
What is Dr. Lydia Joy Koroshetz's office phone number?
The practice phone on file for Dr. Koroshetz is (626) 898-8000.
What is Dr. Lydia Joy Koroshetz's medical license number?
Dr. Koroshetz's Pennsylvania license number on file is MT220245, one of the licenses on file in 2 states.
Which states has Dr. Lydia Joy Koroshetz been licensed in?
Dmand AI has state licenses on file for Dr. Koroshetz in Pennsylvania (2022 to 2024) and California (2023 to 2025).
Which hospitals is Dr. Lydia Joy Koroshetz affiliated with?
Dr. Koroshetz practices at USC Arcadia Hospital in Arcadia, California. Dr. Koroshetz is also affiliated with Los Angeles General Medical Center. Dmand AI links Dr. Koroshetz to 2 more hospitals.
What medical group is Dr. Lydia Joy Koroshetz part of?
Dr. Koroshetz is linked to USC Care Medical Group.
Does Dr. Lydia Joy Koroshetz accept Medicare?
Yes. CMS data shows Dr. Koroshetz billed Medicare for 395 services in 2024, and Dr. Koroshetz accepts Medicare assignment.
How many Medicare patients does Dr. Lydia Joy Koroshetz see?
CMS counts 390 Medicare patients who saw Dr. Koroshetz in 2024, with an average age of 77.
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Is Dr. Lydia Joy Koroshetz board certified?
Yes. Dr. Koroshetz is board certified in emergency medicine by the American Board of Emergency Medicine.
What services does Dr. Lydia Joy Koroshetz bill to Medicare?
In 2024, Dr. Koroshetz's most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and critical care (99291).
Where did Dr. Lydia Joy Koroshetz go to medical school?
Dr. Koroshetz graduated from Georgetown University School Of Medicine in 2020.
What drugs does Dr. Lydia Joy Koroshetz prescribe most?
In 2024 Medicare Part D data, Dr. Koroshetz's most prescribed drugs by claims were Cephalexin and Ibuprofen.
How long has Dr. Lydia Joy Koroshetz been practicing?
Dr. Koroshetz graduated from medical school in 2020, 6 years ago.
What insurance does Dr. Lydia Joy Koroshetz accept?
Dr. Koroshetz is in network with 5 carriers, including United Healthcare, Blue Cross Blue Shield of Michigan and Elevance. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.
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