Stephanie Messina, PA
- Part D claims, 2024
- 1,356
- Industry payments
- $5,035
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2011
- Practice address
- 5 Journey, Aliso Viejo, CA 92656
- Practice phone
- Call (949) 430-3963
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Medical group
Find Stephanie Messina'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.
Stephanie Messina is a physician assistant in Aliso Viejo, California
Stephanie Messina practices with Vituity, a medical group.
Stephanie Messina's NPI, 1912202987, was assigned on January 21, 2011. Stephanie Messina holds California license PA21409.
- NPI
- 1912202987NPI Registry (opens in a new tab)
- NPI enumeration date
- January 21, 2011
- NPI status
- Active
- Practice phone
- (949) 430-3963
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Stephanie Messina's practice address is in Aliso Viejo, California
Stephanie Messina's practice address in the NPI Registry is 5 Journey, Aliso Viejo, CA 92656, in Orange County. The practice phone is (949) 430-3963.
- NPI Registry address5 Journey, Aliso Viejo, CA 92656 · Orange CountyPhone(949) 430-3963
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Stephanie Messina is affiliated with 1 medical group
Stephanie Messina is part of Vituity, a medical group in Emeryville, California.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Stephanie Messina's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Stephanie Messina practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Vituity | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across Vituity and 6.2K+ hospitals, with verified contacts in the same login.
Stephanie Messina is one of 11,482 physician assistants in California
Physician assistant is Stephanie Messina's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Stephanie Messina is licensed in California.
Specialties and state licenses
- Physician assistant, CaliforniaPrimary
Physician assistants near Stephanie Messina
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
Stephanie Messina's patients have a median age of 53
Across all payers, Dmand AI patient panel data puts Stephanie Messina's median patient age at 53, with 76% women.
Stephanie Messina's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 53
Patient panel by sex, all payers
- Women76%
- Men22%
Source: Dmand AI Patient Panel Data
Stephanie Messina wrote 1,356 Medicare Part D claims in 2024
In 2024, Stephanie Messina wrote 1,356 Medicare Part D claims for 195 patients. 90% of them were for generic drugs. CMS names the drug for 1,129 of them, across 32 drugs with 11 or more claims each, at $245,111 in total drug cost.
Stephanie Messina's Part D claims by kind of drug, 2024
- Generic1,223 claims90%
- Brand-name and other133 claims10%
Stephanie Messina'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 Stephanie Messina's Part D claims, 2024
- Antipsychotics, patients 65 and over6%78 of 1,356 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
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Stephanie Messina received $5,035 in industry payments from 2024 to 2025
CMS Open Payments shows 216 general payments to Stephanie Messina from 32 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $976.
General payments to Stephanie Messina by program year, 2024 to 2025
Companies that paid Stephanie Messina the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Stephanie Messina'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 | Dmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| 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 Stephanie Messina
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Stephanie Messina's NPI number?
Stephanie Messina's NPI number is 1912202987. It was assigned on January 21, 2011, and it is active in the NPI Registry.
What does Stephanie Messina specialize in?
Stephanie Messina is a physician assistant in Aliso Viejo, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Stephanie Messina practice?
Stephanie Messina practices at 5 Journey, Aliso Viejo, CA 92656. Stephanie Messina's primary practice is Vituity, a medical group.
What is Stephanie Messina's office phone number?
The practice phone on file for Stephanie Messina is (949) 430-3963.
What is Stephanie Messina's medical license number?
Stephanie Messina holds California license PA21409.
What medical group is Stephanie Messina part of?
Stephanie Messina is part of Vituity in Emeryville, California.
What drugs does Stephanie Messina prescribe most?
In 2024 Medicare Part D data, Stephanie Messina's most prescribed drugs by claims were Memantine HCl, Donepezil HCl and Quetiapine Fumarate.
Has Stephanie Messina received payments from drug or device companies?
CMS Open Payments shows $5,035 in general payments to Stephanie Messina from 32 companies from 2024 to 2025. The largest total came from Abbvie Inc.
How long has Stephanie Messina been practicing?
Stephanie Messina's NPI was assigned in 2011.
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