Dr. Mary Caizza Cerni, DO
- Medicare services, 2024
- 143
- Medicare patients, 2024
- 76
- Part D claims, 2024
- 3,799
- Industry payments
- $7,161
- Affiliated sites
- 1
- Practice address
- 4301 Lost Hills Rd, Agoura Hills, CA 91301
- Practice phone
- Call (833) 260-3358
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Access Primary Care Physicians, Inc.
Agoura Hills, California
Find Dr. Cerni'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. Mary Caizza Cerni is an adult medicine physician in Agoura Hills, California
Dr. Cerni practices at Access Primary Care Physicians, Inc. in Agoura Hills, California.
Dr. Cerni's NPI, 1164519989, was assigned on October 5, 2006. Dr. Cerni graduated from Heritage College of Osteopathic Medicine in 1984. Dr. Cerni's California license number on file is 20A5318.
- NPI
- 1164519989NPI Registry (opens in a new tab)
- NPI enumeration date
- October 5, 2006
- NPI status
- Active
- Practice phone
- (833) 260-3358
- 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; and Dmand AI Practice Data
Dr. Mary Caizza Cerni practices at Access Primary Care Physicians, Inc. in Agoura Hills, California
Dr. Cerni's primary practice is Access Primary Care Physicians, Inc., at 4301 Lost Hills Rd, Agoura Hills, CA 91301 in Los Angeles County. The practice phone is (833) 260-3358.
- Access Primary Care Physicians, Inc.4301 Lost Hills Rd, Agoura Hills, CA 91301 · Los Angeles CountyPhone(833) 260-3358
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mary Caizza Cerni is affiliated with 2 sites of care and 1 medical group
Dr. Cerni's primary practice is Access Primary Care Physicians, Inc. in Agoura Hills, California. The medical group on file is Ava Health Partners. Dmand AI also links Dr. Cerni to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Mary Caizza Cerni's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Cerni practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Access Primary Care Physicians, Inc. | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mary Caizza Cerni is one of 299 adult medicine physicians in California
Adult medicine is Dr. Cerni's primary specialty in the NPI Registry, under taxonomy code 207QA0505X. Dmand AI has Dr. Cerni's licenses on file in 3 states: California, Ohio and Nevada.
Specialties and state licenses
- Adult medicine, CaliforniaPrimary
- Ohio license
- Nevada license
Clinical focus
Dmand AI lists acid reflux, aneurysm, arthritis, bronchitis, chronic anemia, chronic diabetes, chronic hypertension and chronic kidney disease among the conditions Dr. Cerni treats.
Adult medicine physicians near Dr. Cerni
Counts of adult 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. Mary Caizza Cerni billed Medicare for 143 services in 2024
CMS data shows 143 Medicare services from Dr. Cerni across 5 procedure codes in 2024, for 76 Medicare patients. Medicare paid $14,075 for them. Every service was in an office.
Dr. Cerni's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1532024: 11227%
- Other services
- 2023: 522024: 3140%
Dr. Cerni compared with the California median for adult medicine physicians, 2024
- Dr. Cerni
- California median
- Medicare services
- 143vs 19928% below
- Medicare patients
- 76vs 10930% below
- Part D claims
- 3,177vs 9633.3 times
Medians across 284 adult medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Cerni'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. Cerni?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Cerni and other adult medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mary Caizza Cerni treated 76 Medicare patients in 2024, average age 75
CMS counts 76 Medicare patients who saw Dr. Cerni in 2024. The largest group is 65 to 74, with 44 patients. 75% of them have high blood pressure, and 61% have high cholesterol. Their average risk score is 0.79, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Cerni's median patient age at 72, with 68% women.
Dr. Cerni's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Cerni's Medicare patients by sex, 2024
- Women6079%
- Men1621%
Chronic conditions among Dr. Cerni's Medicare patients, 2024
- High blood pressure75%
- High cholesterol61%
- Arthritis42%
- Osteoporosis22%
- Diabetes21%
- Cancer16%
Share of Medicare patients with each condition. A patient can have several.
Dr. Cerni's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women68%
- Men32%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mary Caizza Cerni wrote 3,799 Medicare Part D claims in 2024
In 2024, Dr. Cerni wrote 3,799 Medicare Part D claims for 376 patients. 85% of them were for generic drugs. CMS names the drug for 3,177 of them, across 80 drugs with 11 or more claims each, at $284,729 in total drug cost. In 2023, CMS named 4,873 claims across 110 drugs.
Dr. Cerni's Part D claims by kind of drug, 2024
- Generic3,233 claims85%
- Brand-name510 claims13%
- Other56 claims1%
Dr. Cerni'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. Cerni's Part D claims, 2024
- Opioids4%134 of 3,799 claims
- Antibiotics1%53 of 3,799 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: 4,8732024: 3,17735%
Drugs named by CMS: 80 in 2024, 110 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
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Dr. Mary Caizza Cerni received $7,161 in industry payments from 2016 to 2025
CMS Open Payments shows 499 general payments to Dr. Cerni from 26 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 98% of the total. Janssen Pharmaceuticals, Inc paid the most, $1,056.
General payments to Dr. Cerni by program year, 2016 to 2025
General payments to Dr. Cerni by kind, 2016 to 2025
- Food and beverage$7,04798%
- Education$1142%
Companies that paid Dr. Cerni 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. Mary Caizza Cerni has 1 award and honors on record
Dmand AI lists 1 award for Dr. Cerni.
Awards and honors for Dr. Cerni
- Undated
- Compassionate Doctors
Source: Dmand AI Professional Profile Data
Dr. Mary Caizza Cerni graduated from Heritage College of Osteopathic Medicine
Dr. Cerni graduated from Heritage College of Osteopathic Medicine in 1984. Dr. Cerni is a member of AOA.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Mary Caizza Cerni accepts plans from 5 insurance carriers
Dr. Cerni is in network with 5 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- CMS Medicare
Plan types Dr. Cerni accepts, by number of carriers
- Medicare5
- PPO4
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Mary Caizza Cerni'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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) |
| 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. Mary Caizza Cerni
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 Caizza Cerni's NPI number?
Dr. Mary Caizza Cerni's NPI number is 1164519989. It was assigned on October 5, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mary Caizza Cerni?
Dr. Mary Caizza Cerni is an adult medicine physician in Agoura Hills, California. The primary specialty in the NPI Registry is Adult Medicine Physician (taxonomy code 207QA0505X).
Where does Dr. Mary Caizza Cerni practice?
Dr. Cerni practices at 4301 Lost Hills Rd, Agoura Hills, CA 91301. Dr. Cerni's primary practice is Access Primary Care Physicians, Inc. in Agoura Hills, California. Dmand AI also links Dr. Cerni to 1 group practice or clinic.
What is Dr. Mary Caizza Cerni's office phone number?
The practice phone on file for Dr. Cerni is (833) 260-3358.
What is Dr. Mary Caizza Cerni's medical license number?
Dr. Cerni's California license number on file is 20A5318, one of the licenses on file in 3 states.
Which states has Dr. Mary Caizza Cerni been licensed in?
Dmand AI has state licenses on file for Dr. Cerni in California (1986 to 2025), Ohio (1985 to 2023) and Nevada (2021).
What medical group is Dr. Mary Caizza Cerni part of?
Dr. Cerni is linked to Ava Health Partners.
Does Dr. Mary Caizza Cerni accept Medicare?
Yes. CMS data shows Dr. Cerni billed Medicare for 143 services in 2024.
How many Medicare patients does Dr. Mary Caizza Cerni see?
CMS counts 76 Medicare patients who saw Dr. Cerni in 2024, with an average age of 75.
What services does Dr. Mary Caizza Cerni bill to Medicare?
In 2024, Dr. Cerni's most billed Medicare services were office visit, established patient (99214), medicare service (G0439) and office visit, established patient (99213).
Show 5 more questionsShow fewer questions
Where did Dr. Mary Caizza Cerni go to medical school?
Dr. Cerni graduated from Heritage College of Osteopathic Medicine in 1984.
What drugs does Dr. Mary Caizza Cerni prescribe most?
In 2024 Medicare Part D data, Dr. Cerni's most prescribed drugs by claims were Amlodipine Besylate, Levothyroxine Sodium and Losartan Potassium.
Has Dr. Mary Caizza Cerni received payments from drug or device companies?
CMS Open Payments shows $7,161 in general payments to Dr. Cerni from 26 companies from 2016 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Mary Caizza Cerni been practicing?
Dr. Cerni graduated from medical school in 1984, 42 years ago.
What insurance does Dr. Mary Caizza Cerni accept?
Dr. Cerni is in network with 5 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
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