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Dr. Arthur H. Loussararian, MD
NPI1720065121PAC ID9335245992
- Medicare services, 2024
- 6,653
- Medicare patients, 2024
- 2,281
- Part D claims, 2024
- 3,994
- Publications
- 1
- Hospital affiliations
- 3
- Practice address
- 27700 Medical Center Rd, Mission Viejo, CA 92691
- Practice phone
- Call (949) 365-2447
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mission Hospital - Unit
Acute Care Hospital-Unit · Mission Viejo, California
Find Dr. Loussararian's professional email, personal email and mobile number
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Dr. Arthur H. Loussararian is a cardiologist in Mission Viejo, California
Dr. Loussararian practices at Mission Hospital - Unit in Mission Viejo, California.
Dr. Loussararian's NPI, 1720065121, was assigned on December 27, 2005. Dr. Loussararian graduated from David Geffen School of Medicine at UCLA in 1991. Dr. Loussararian holds California license G75082.
NPI and contact details
- NPI
- 1720065121NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9335245992
- NPI enumeration date
- December 27, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (949) 365-2447
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Arthur H. Loussararian practices at Mission Hospital - Unit in Mission Viejo, California
Dr. Loussararian's primary practice is Mission Hospital - Unit, at 27700 Medical Center Rd, Mission Viejo, CA 92691 in Orange County. The practice phone is (949) 365-2447.
- Mission Hospital - Unit27700 Medical Center Rd, Mission Viejo, CA 92691 · Orange CountyPhone(949) 365-2447
Source: Dmand AI Affiliation Data
Dr. Arthur H. Loussararian is affiliated with 4 sites of care and 2 medical groups
Dr. Loussararian's primary practice is Mission Hospital - Unit in Mission Viejo, California. Dr. Loussararian is also affiliated with Providence Mission Hospital. The medical group on file is St. Jude Heritage Medical Group. Dmand AI also links Dr. Loussararian to 1 more hospital, 1 group practice or clinic and 1 medical group, each named with a free account.
Mission Hospital - UnitPrimary
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Arthur H. Loussararian's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Loussararian practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mission Hospital - Unit | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Arthur H. Loussararian is one of 2,375 cardiologists in California
Cardiovascular disease is Dr. Loussararian's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Loussararian is board certified in cardiovascular disease by the American Board of Internal Medicine. Dr. Loussararian is licensed in California.
Specialties and state licenses
- Cardiovascular disease, CaliforniaPrimary
Clinical focus
Dmand AI lists angioplasty, cardiac catheterization, leg revascularization and varicose vein treatment among the conditions Dr. Loussararian treats.
Cardiologists near Dr. Loussararian
Counts of cardiologists 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. Arthur H. Loussararian billed Medicare for 6,653 services in 2024
CMS data shows 6,653 Medicare services from Dr. Loussararian across 42 procedure codes in 2024, for 2,281 Medicare patients. Medicare paid $339,603 for them.
Medicare services, 20246,653
Medicare patients2,281
Paid by Medicare$339,603
Procedure codes42
Dr. Loussararian's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 3,4632024: 3,81110%
- Office and hospital visits
- 2023: 2,3152024: 1,42039%
- Lab and pathology
- 2023: 1,0402024: 84519%
- Drugs given in the office
- 2023: 1282024: 22878%
- Surgery
- 2023: 1482024: 1433%
- Imaging
- 2023: 862024: 10421%
- Other services
- 2023: 282024: 102264%
Where Dr. Loussararian's Medicare services took place, 2024
- In an office4,38966%
- In a facility2,26434%
Dr. Loussararian compared with the California median for cardiologists, 2024
- Dr. Loussararian
- California median
- Medicare services
- 6,653vs 1,5604.3 times
- Medicare patients
- 2,281vs 6443.5 times
- Part D claims
- 3,781vs 1,4102.7 times
Medians across 2,237 cardiologists in California with Dmand AI profiles that report each measure.
Dr. Loussararian'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. Loussararian?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Loussararian and other cardiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Arthur H. Loussararian treated 2,281 Medicare patients in 2024, average age 78
CMS counts 2,281 Medicare patients who saw Dr. Loussararian in 2024. The largest group is 75 to 84, with 914 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 12% are also on Medicaid. Their average risk score is 1.66, 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. Loussararian's median patient age at 73, with 51% women.
Medicare patients, 20242,281
Average age78
Average risk score1.66
Also on Medicaid12%
Dr. Loussararian's Medicare patients by age, 2024
Dr. Loussararian's Medicare patients by sex, 2024
- Women1,14850%
- Men1,13350%
Chronic conditions among Dr. Loussararian's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Ischemic heart disease46%
- Atrial fibrillation39%
- Chronic kidney disease31%
- Diabetes31%
- Mood disorders28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Loussararian's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women51%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Arthur H. Loussararian wrote 3,994 Medicare Part D claims in 2024
In 2024, Dr. Loussararian wrote 3,994 Medicare Part D claims for 583 patients. 86% of them were for generic drugs. CMS names the drug for 3,781 of them, across 44 drugs with 11 or more claims each, at $553,780 in total drug cost. In 2023, CMS named 3,564 claims across 40 drugs.
Part D claims, 20243,994
Drugs named by CMS44
Total drug cost$553,780
Part D patients583
Dr. Loussararian's Part D claims by kind of drug, 2024
- Generic3,437 claims86%
- Brand-name557 claims14%
Dr. Loussararian'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. Loussararian's Part D claims, 2024
- Antibiotics0%15 of 3,994 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, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3,5642024: 3,7816%
Drugs named by CMS: 44 in 2024, 40 in 2023.
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
Dr. Arthur H. Loussararian ranks in the 88th percentile for varicose vein removal in Medicare
Dr. Loussararian accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Loussararian as offering telehealth. CMS counts 157 procedures of varicose vein removal by Dr. Loussararian, more than 88% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Dr. Loussararian ranks in Medicare procedure volume
- Varicose vein removal
- 88th percentile157 procedures
- Coronary angioplasty and stenting
- 58th percentile25 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Pacemaker insertion or repair: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Arthur H. Loussararian has 1 publication on record
Dmand AI links 1 paper to Dr. Loussararian.
Papers1
Recent publications by Dr. Loussararian
See who Dr. Loussararian researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Loussararian works with, so you can find a warm path to the right cardiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Arthur H. Loussararian received $22,369 in industry payments from 2016 to 2025
CMS Open Payments shows 255 general payments to Dr. Loussararian from 43 drug and device companies from 2016 to 2025. Education make up the largest share, 43% of the total. AngioDynamics, Inc. paid the most, $9,840.
General payments to Dr. Loussararian by program year, 2016 to 2025
General payments to Dr. Loussararian by kind, 2016 to 2025
$22.4Kin total
- Education$9,65843%
- Food and beverage$8,17937%
- Travel and lodging$4,38520%
- Consulting fees$1471%
Companies that paid Dr. Loussararian the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Arthur H. Loussararian has 1 award and honors on record
Dmand AI lists 1 award for Dr. Loussararian.
Awards and honors for Dr. Loussararian
- Undated
- ACC Fellow
Source: Dmand AI Professional Profile Data
Dr. Arthur H. Loussararian graduated from David Geffen School of Medicine at UCLA
Dr. Loussararian graduated from David Geffen School of Medicine at UCLA in 1991. Dr. Loussararian is a member of ACC.
- Medical school
- Board certified in cardiovascular disease
- Board certified in internal medicine
- Board certified in interventional cardiology
Source: Dmand AI Professional Profile Data
Dr. Arthur H. Loussararian accepts plans from 14 insurance carriers
Dr. Loussararian is in network with 14 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. Medicare plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Excellus BlueCross BlueShield
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Humana
- Blue Cross Blue Shield of Massachusetts
- +6 more carriersWith a free account
Plan types Dr. Loussararian accepts, by number of carriers
- Medicare10
- PPO10
- HMO8
- EPO5
- POS5
Source: Dmand AI Insurance Network Data
Sources for Dr. Arthur H. Loussararian'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 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)Doctors and Clinicians Utilization Data (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) |
| 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. Arthur H. Loussararian
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. Arthur H. Loussararian's NPI number?
Dr. Arthur H. Loussararian's NPI number is 1720065121. It was assigned on December 27, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Arthur H. Loussararian?
Dr. Arthur H. Loussararian is a cardiologist in Mission Viejo, California. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. Arthur H. Loussararian practice?
Dr. Loussararian practices at 27700 Medical Center Rd, Mission Viejo, CA 92691. Dr. Loussararian's primary practice is Mission Hospital - Unit in Mission Viejo, California. Dmand AI also links Dr. Loussararian to 1 hospital, 1 group practice or clinic and 1 medical group.
What is Dr. Arthur H. Loussararian's office phone number?
The practice phone on file for Dr. Loussararian is (949) 365-2447.
What is Dr. Arthur H. Loussararian's medical license number?
Dr. Loussararian holds California license G75082.
Which hospitals is Dr. Arthur H. Loussararian affiliated with?
Dr. Loussararian is affiliated with Providence Mission Hospital. Dmand AI links Dr. Loussararian to 2 more hospitals.
What medical group is Dr. Arthur H. Loussararian part of?
Dr. Loussararian is linked to St. Jude Heritage Medical Group. Dmand AI links Dr. Loussararian to 1 more medical group.
Does Dr. Arthur H. Loussararian accept Medicare?
Yes. CMS data shows Dr. Loussararian billed Medicare for 6,653 services in 2024, and Dr. Loussararian accepts Medicare assignment.
Does Dr. Arthur H. Loussararian offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Loussararian as offering telehealth services.
How many Medicare patients does Dr. Arthur H. Loussararian see?
CMS counts 2,281 Medicare patients who saw Dr. Loussararian in 2024, with an average age of 78.
Show 8 more questionsShow fewer questions
Is Dr. Arthur H. Loussararian board certified?
Yes. Dr. Loussararian is board certified in cardiovascular disease by the American Board of Internal Medicine.
What services does Dr. Arthur H. Loussararian bill to Medicare?
In 2024, Dr. Loussararian's most billed Medicare services were heart test or procedure (93010), lab and pathology test (85610) and office visit, established patient (99214).
Where did Dr. Arthur H. Loussararian go to medical school?
Dr. Loussararian graduated from David Geffen School of Medicine at UCLA in 1991.
What drugs does Dr. Arthur H. Loussararian prescribe most?
In 2024 Medicare Part D data, Dr. Loussararian's most prescribed drugs by claims were Metoprolol Succinate, Atorvastatin Calcium and Clopidogrel.
Has Dr. Arthur H. Loussararian received payments from drug or device companies?
CMS Open Payments shows $22,369 in general payments to Dr. Loussararian from 43 companies from 2016 to 2025. The largest total came from AngioDynamics, Inc.
How long has Dr. Arthur H. Loussararian been practicing?
Dr. Loussararian graduated from medical school in 1991, 35 years ago.
Does Dr. Arthur H. Loussararian do research?
Dmand AI links 1 publication to Dr. Loussararian.
What insurance does Dr. Arthur H. Loussararian accept?
Dr. Loussararian is in network with 14 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. Medicare plans come from the most carriers, 10. Check the plan with the practice before a visit.
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