Marisa Elizabeth Ayers, PA
- Medicare services, 2024
- 633
- Medicare patients, 2024
- 414
- Part D claims, 2024
- 544
- Hospital affiliations
- 3
- Industry payments
- $780
- Practice address
- 1400 E Church St, Santa Maria, CA 93454
- Practice phone
- Call (805) 739-3100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Marisa Ayers' 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.
Marisa Elizabeth Ayers is a physician assistant in Santa Maria, California
Marisa Ayers practices at Dignity Health - Marian Regional Medical Center in Santa Maria, California, part of CommonSpirit Health.
Marisa Ayers' NPI, 1194001990, was assigned on October 25, 2011. Marisa Ayers holds California license PA21792.
- NPI
- 1194001990NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5496929267
- NPI enumeration date
- October 25, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (805) 739-3100
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Marisa Elizabeth Ayers practices at Dignity Health - Marian Regional Medical Center in Santa Maria, California
Marisa Ayers' primary practice is Dignity Health - Marian Regional Medical Center, at 1400 E Church St, Santa Maria, CA 93454 in Santa Barbara County. The practice phone is (805) 739-3100.
- Dignity Health - Marian Regional Medical Center1400 E Church St, Santa Maria, CA 93454 · Santa Barbara CountyPhone(805) 739-3100
Source: Dmand AI Affiliation Data
Marisa Elizabeth Ayers is affiliated with 5 sites of care and 2 medical groups
Marisa Ayers' primary practice is Dignity Health - Marian Regional Medical Center in Santa Maria, California, part of CommonSpirit Health. Marisa Ayers is also affiliated with Dignity Health - French Hospital Medical Center. The medical group on file is Pacific Central Coast Health Centers Medical Group. Dmand AI also links Marisa Ayers to 1 more hospital, 2 group practices and clinics 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 Marisa Elizabeth Ayers' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Marisa Ayers practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dignity Health - Marian Regional Medical Center | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across CommonSpirit Health and 6.2K+ hospitals, with verified contacts in the same login.
Marisa Elizabeth Ayers is one of 11,482 physician assistants in California
Physician assistant is Marisa Ayers' primary specialty in the NPI Registry, under taxonomy code 363A00000X. Marisa Ayers is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA). Marisa Ayers is licensed in California.
Specialties and state licenses
- Physician assistant, CaliforniaPrimary
Physician assistants near Marisa Ayers
Counts of physician assistants 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
Marisa Elizabeth Ayers billed Medicare for 633 services in 2024
CMS data shows 633 Medicare services from Marisa Ayers across 9 procedure codes in 2024, for 414 Medicare patients. Medicare paid $41,661 for them. Every service was in an office.
Marisa Ayers' Medicare services by type, 2024
- Office and hospital visits534
- Tests and treatments60
- Lab and pathology24
- Surgery15
Marisa Ayers compared with the California median for physician assistants, 2024
- Marisa Ayers
- California median
- Medicare services
- 633vs 2043.1 times
- Medicare patients
- 414vs 1053.9 times
- Part D claims
- 214vs 24312% below
Medians across 7,065 physician assistants in California with Dmand AI profiles that report each measure.
Marisa Ayers' 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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Marisa Elizabeth Ayers treated 414 Medicare patients in 2024, average age 75
CMS counts 414 Medicare patients who saw Marisa Ayers in 2024. The largest group is 65 to 74, with 176 patients. 75% of them have high cholesterol, and 68% have high blood pressure. 9% are also on Medicaid. Their average risk score is 1.04, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Marisa Ayers' median patient age at 68, with 61% women.
Marisa Ayers' Medicare patients by age, 2024
Marisa Ayers' Medicare patients by sex, 2024
- Women23958%
- Men17542%
Chronic conditions among Marisa Ayers' Medicare patients, 2024
- High cholesterol75%
- High blood pressure68%
- Arthritis50%
- Anxiety24%
- Ischemic heart disease22%
- Diabetes21%
- Chronic kidney disease20%
- Mood disorders20%
Share of Medicare patients with each condition. A patient can have several.
Marisa Ayers' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women61%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Marisa Elizabeth Ayers wrote 544 Medicare Part D claims in 2024
In 2024, Marisa Ayers wrote 544 Medicare Part D claims for 276 patients. 90% of them were for generic drugs. CMS names the drug for 214 of them, across 12 drugs with 11 or more claims each, at $1,875 in total drug cost.
Marisa Ayers' Part D claims by kind of drug, 2024
- Generic488 claims90%
- Brand-name and other56 claims10%
Marisa Ayers' 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 Marisa Ayers' Part D claims, 2024
- Opioids4%23 of 544 claims
- Antibiotics8%46 of 544 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 Marisa Elizabeth Ayers takes part in Medicare
Marisa Ayers 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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Marisa Elizabeth Ayers received $780 in industry payments from 2024 to 2025
CMS Open Payments shows 29 general payments to Marisa Ayers from 12 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $185.
General payments to Marisa Ayers by program year, 2024 to 2025
Companies that paid Marisa Ayers the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Marisa Elizabeth Ayers is board certified in certified physician assistant
- Board certified in certified physician assistant
Source: Dmand AI Professional Profile Data
Sources for Marisa Elizabeth Ayers'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 |
| 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 Marisa Elizabeth Ayers
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Marisa Elizabeth Ayers' NPI number?
Marisa Elizabeth Ayers' NPI number is 1194001990. It was assigned on October 25, 2011, and it is active in the NPI Registry.
What does Marisa Elizabeth Ayers specialize in?
Marisa Elizabeth Ayers is a physician assistant in Santa Maria, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Marisa Elizabeth Ayers practice?
Marisa Ayers practices at 1400 E Church St, Santa Maria, CA 93454. Marisa Ayers' primary practice is Dignity Health - Marian Regional Medical Center in Santa Maria, California, part of CommonSpirit Health. Dmand AI also links Marisa Ayers to 1 hospital, 2 group practices and clinics and 1 medical group.
What is Marisa Elizabeth Ayers' office phone number?
The practice phone on file for Marisa Ayers is (805) 739-3100.
What is Marisa Elizabeth Ayers' medical license number?
Marisa Ayers holds California license PA21792.
Which hospitals is Marisa Elizabeth Ayers affiliated with?
Marisa Ayers practices at Dignity Health - Marian Regional Medical Center in Santa Maria, California. Marisa Ayers is also affiliated with Dignity Health - French Hospital Medical Center. Dmand AI links Marisa Ayers to 1 more hospital.
What medical group is Marisa Elizabeth Ayers part of?
Marisa Ayers is linked to Pacific Central Coast Health Centers Medical Group. Dmand AI links Marisa Ayers to 1 more medical group.
Does Marisa Elizabeth Ayers accept Medicare?
Yes. CMS data shows Marisa Ayers billed Medicare for 633 services in 2024, and Marisa Ayers accepts Medicare assignment.
How many Medicare patients does Marisa Elizabeth Ayers see?
CMS counts 414 Medicare patients who saw Marisa Ayers in 2024, with an average age of 75.
Is Marisa Elizabeth Ayers board certified?
Yes. Marisa Ayers is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA).
Show 4 more questionsShow fewer questions
What services does Marisa Elizabeth Ayers bill to Medicare?
In 2024, Marisa Ayers' most billed Medicare services were office visit, established patient (99213), office visit, new patient (99203) and office visit, new patient (99204).
What drugs does Marisa Elizabeth Ayers prescribe most?
In 2024 Medicare Part D data, Marisa Ayers' most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Levothyroxine Sodium.
Has Marisa Elizabeth Ayers received payments from drug or device companies?
CMS Open Payments shows $780 in general payments to Marisa Ayers from 12 companies from 2024 to 2025. The largest total came from Novo Nordisk Inc.
How long has Marisa Elizabeth Ayers been practicing?
Marisa Ayers graduated from medical school in 2011, 15 years ago.
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