Dr. Mary Elise Gianos, MD
- Medicare services, 2024
- 7,020
- Medicare patients, 2024
- 233
- Part D claims, 2024
- 837
- Hospital affiliations
- 2
- Industry payments
- $91
- Practice address
- 1600 N Rose Ave, Oxnard, CA 93030
- Practice phone
- Call (805) 988-2500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Gianos' professional email, personal email and mobile number
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Dr. Mary Elise Gianos is an allergist and immunologist in Oxnard, California
Dr. Gianos practices at Dignity Health - St. John's Regional Medical Center in Oxnard, California, part of CommonSpirit Health.
Dr. Gianos' NPI, 1386638971, was assigned on September 9, 2005. Dr. Gianos graduated from Feinberg School of Medicine in 1984. Dr. Gianos holds California license G57446.
- NPI
- 1386638971NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4183676729
- NPI enumeration date
- September 9, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (805) 988-2500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mary Elise Gianos practices at Dignity Health - St. John's Regional Medical Center in Oxnard, California
Dr. Gianos' primary practice is Dignity Health - St. John's Regional Medical Center, at 1600 N Rose Ave, Oxnard, CA 93030 in Ventura County. The practice phone is (805) 988-2500.
- Dignity Health - St. John's Regional Medical Center1600 N Rose Ave, Oxnard, CA 93030 · Ventura CountyPhone(805) 988-2500
Source: Dmand AI Affiliation Data
Dr. Mary Elise Gianos is affiliated with 2 sites of care and 1 medical group
Dr. Gianos' primary practice is Dignity Health - St. John's Regional Medical Center in Oxnard, California, part of CommonSpirit Health. Dmand AI also links Dr. Gianos to 1 hospital and 1 medical group, 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. Mary Elise Gianos' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gianos practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dignity Health - St. John's Regional 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. Mary Elise Gianos is one of 386 allergists and immunologists in California
Allergy and immunology is Dr. Gianos' primary specialty in the NPI Registry, under taxonomy code 207K00000X. Dr. Gianos is board certified in internal medicine by the American Board of Internal Medicine. Dr. Gianos is licensed in California.
Specialties and state licenses
- Allergy and immunology, CaliforniaPrimary
Clinical focus
Dmand AI lists acute sinusitis, asthma, chronic nasal allergies, hives and immune deficiency disease among the conditions Dr. Gianos treats.
Allergists and immunologists near Dr. Gianos
Counts of allergists and immunologists 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. Mary Elise Gianos billed Medicare for 7,020 services in 2024
CMS data shows 7,020 Medicare services from Dr. Gianos across 8 procedure codes in 2024, for 233 Medicare patients. Medicare paid $76,945 for them. Every service was in an office.
Dr. Gianos' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 6,4502024: 6,7074%
- Office and hospital visits
- 2023: 3132024: 313No change
Dr. Gianos compared with the California median for allergists and immunologists, 2024
- Dr. Gianos
- California median
- Medicare services
- 7,020vs 1,8403.8 times
- Medicare patients
- 233vs 14561% above
- Part D claims
- 620vs 2592.4 times
Medians across 368 allergists and immunologists in California with Dmand AI profiles that report each measure.
Dr. Gianos' 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. Gianos?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Gianos and other allergists and immunologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mary Elise Gianos treated 233 Medicare patients in 2024, average age 75
CMS counts 233 Medicare patients who saw Dr. Gianos in 2024. The largest group is 65 to 74, with 122 patients. 75% of them have high cholesterol, and 72% have high blood pressure. Their average risk score is 1.06, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Gianos' median patient age at 44, with 61% women.
Dr. Gianos' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Gianos' Medicare patients by sex, 2024
- Women16671%
- Men6729%
Chronic conditions among Dr. Gianos' Medicare patients, 2024
- High cholesterol75%
- High blood pressure72%
- Arthritis58%
- Ischemic heart disease33%
- Asthma30%
- Mood disorders25%
- Depression24%
- Diabetes23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gianos' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 44
Patient panel by sex, all payers
- Women61%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mary Elise Gianos wrote 837 Medicare Part D claims in 2024
In 2024, Dr. Gianos wrote 837 Medicare Part D claims for 165 patients. 65% of them were for generic drugs. CMS names the drug for 620 of them, across 20 drugs with 11 or more claims each, at $622,346 in total drug cost. In 2023, CMS named 591 claims across 16 drugs.
Dr. Gianos' Part D claims by kind of drug, 2024
- Generic540 claims65%
- Brand-name297 claims35%
Dr. Gianos' 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. Gianos' Part D claims, 2024
- Antibiotics1%12 of 837 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: 5912024: 6205%
Drugs named by CMS: 20 in 2024, 16 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
How Dr. Mary Elise Gianos takes part in Medicare
Dr. Gianos 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. Mary Elise Gianos received $91 in industry payments from 2017 to 2025
CMS Open Payments shows 3 general payments to Dr. Gianos from 3 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Shire North American Group Inc paid the most, $52.
General payments to Dr. Gianos by program year, 2017 to 2025
Companies that paid Dr. Gianos the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mary Elise Gianos graduated from Feinberg School of Medicine
Dr. Gianos graduated from Feinberg School of Medicine in 1984.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Mary Elise Gianos accepts plans from 10 insurance carriers
Dr. Gianos is in network with 10 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- +2 more carriersWith a free account
Plan types Dr. Gianos accepts, by number of carriers
- Medicare6
- PPO6
- HMO3
- POS3
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Mary Elise Gianos'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) |
| 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. Mary Elise Gianos
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. Mary Elise Gianos' NPI number?
Dr. Mary Elise Gianos' NPI number is 1386638971. It was assigned on September 9, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Mary Elise Gianos?
Dr. Mary Elise Gianos is an allergist and immunologist in Oxnard, California. The primary specialty in the NPI Registry is Allergy & Immunology Physician (taxonomy code 207K00000X).
Where does Dr. Mary Elise Gianos practice?
Dr. Gianos practices at 1600 N Rose Ave, Oxnard, CA 93030. Dr. Gianos' primary practice is Dignity Health - St. John's Regional Medical Center in Oxnard, California, part of CommonSpirit Health. Dmand AI also links Dr. Gianos to 1 hospital and 1 medical group.
What is Dr. Mary Elise Gianos' office phone number?
The practice phone on file for Dr. Gianos is (805) 988-2500.
What is Dr. Mary Elise Gianos' medical license number?
Dr. Gianos holds California license G57446.
Which hospitals is Dr. Mary Elise Gianos affiliated with?
Dr. Gianos practices at Dignity Health - St. John's Regional Medical Center in Oxnard, California. Dmand AI links Dr. Gianos to 1 more hospital.
Does Dr. Mary Elise Gianos accept Medicare?
Yes. CMS data shows Dr. Gianos billed Medicare for 7,020 services in 2024, and Dr. Gianos accepts Medicare assignment.
How many Medicare patients does Dr. Mary Elise Gianos see?
CMS counts 233 Medicare patients who saw Dr. Gianos in 2024, with an average age of 75.
Is Dr. Mary Elise Gianos board certified?
Yes. Dr. Gianos is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Mary Elise Gianos bill to Medicare?
In 2024, Dr. Gianos' most billed Medicare services were allergy test or treatment (95004), allergy test or treatment (95117) and allergy test or treatment (95165).
Show 5 more questionsShow fewer questions
Where did Dr. Mary Elise Gianos go to medical school?
Dr. Gianos graduated from Feinberg School of Medicine in 1984.
What drugs does Dr. Mary Elise Gianos prescribe most?
In 2024 Medicare Part D data, Dr. Gianos' most prescribed drugs by claims were Montelukast Sodium, Levocetirizine Dihydrochloride and Fluticasone Propionate.
Has Dr. Mary Elise Gianos received payments from drug or device companies?
CMS Open Payments shows $91 in general payments to Dr. Gianos from 3 companies from 2017 to 2025. The largest total came from Shire North American Group Inc.
How long has Dr. Mary Elise Gianos been practicing?
Dr. Gianos graduated from medical school in 1984, 42 years ago.
What insurance does Dr. Mary Elise Gianos accept?
Dr. Gianos is in network with 10 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
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