Mary Lou Lao David, FNP-BC
- Medicare patients, 2024
- 26
- Part D claims, 2024
- 117
- Industry payments
- $24
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 23512 Madero, Mission Viejo, CA 92691-2743
- Practice phone
- Call (949) 583-1600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Memorialcare Medical Foundation - Mission Viejo
Primary care practice · Mission Viejo, California
Find Mary Lou David'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.
Mary Lou Lao David is a primary care nurse practitioner in Mission Viejo, California
Mary Lou David practices at Memorialcare Medical Foundation - Mission Viejo in Mission Viejo, California.
Mary Lou David's NPI, 1245467992, was assigned on June 19, 2009. Mary Lou David holds California license 18743.
- NPI
- 1245467992NPI Registry (opens in a new tab)
- NPI enumeration date
- June 19, 2009
- NPI status
- Active
- Practice phone
- (949) 583-1600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Mary Lou Lao David practices at Memorialcare Medical Foundation - Mission Viejo in Mission Viejo, California
Mary Lou David's primary practice is Memorialcare Medical Foundation - Mission Viejo, at 23512 Madero, Mission Viejo, CA 92691-2743. The practice phone is (949) 583-1600.
- Memorialcare Medical Foundation - Mission Viejo23512 Madero, Mission Viejo, CA 92691-2743Phone(949) 583-1600
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Mary Lou Lao David is affiliated with 1 site of care and 1 medical group
Mary Lou David's primary practice is Memorialcare Medical Foundation - Mission Viejo in Mission Viejo, California. The medical group on file is MemorialCare Medical Group.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Mary Lou Lao David's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mary Lou David practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Memorialcare Medical Foundation - Mission Viejo | 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 each health system and 6.2K+ hospitals, with verified contacts in the same login.
Mary Lou Lao David is one of 860 primary care nurse practitioners in California
Primary care is Mary Lou David's primary specialty in the NPI Registry, under taxonomy code 363LP2300X. Mary Lou David is licensed in California.
Specialties and state licenses
- Primary care nurse practitioner, CaliforniaPrimary
Primary care nurse practitioners near Mary Lou David
Counts of primary care nurse practitioners 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
Mary Lou Lao David treated 26 Medicare patients in 2024, average age 74
CMS counts 26 Medicare patients who saw Mary Lou David in 2024. The largest group is 65 to 74, with 13 patients. 75% of them have high cholesterol, and 73% have atrial fibrillation. Their average risk score is 1.27, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Mary Lou David's median patient age at 73, with 25% women.
Mary Lou David's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Mary Lou David's Medicare patients, 2024
- High cholesterol75%
- Atrial fibrillation73%
- High blood pressure73%
Share of Medicare patients with each condition. A patient can have several.
Mary Lou David'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
- Women25%
- Men75%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Mary Lou Lao David wrote 117 Medicare Part D claims in 2024
In 2024, Mary Lou David wrote 117 Medicare Part D claims for 40 patients. 100% of them were for generic drugs.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Mary Lou Lao David received $24 in industry payments in 2025
CMS Open Payments shows 1 general payment to Mary Lou David from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Gilead Sciences, Inc. paid the most, $24.
Companies that paid Mary Lou David the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Mary Lou Lao David'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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 (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 Mary Lou Lao David
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Mary Lou Lao David's NPI number?
Mary Lou Lao David's NPI number is 1245467992. It was assigned on June 19, 2009, and it is active in the NPI Registry.
What does Mary Lou Lao David specialize in?
Mary Lou Lao David is a primary care nurse practitioner in Mission Viejo, California. The primary specialty in the NPI Registry is Primary Care Nurse Practitioner (taxonomy code 363LP2300X).
Where does Mary Lou Lao David practice?
Mary Lou David practices at 23512 Madero, Mission Viejo, CA 92691-2743. Mary Lou David's primary practice is Memorialcare Medical Foundation - Mission Viejo in Mission Viejo, California.
What is Mary Lou Lao David's office phone number?
The practice phone on file for Mary Lou David is (949) 583-1600.
What is Mary Lou Lao David's medical license number?
Mary Lou David holds California license 18743.
What medical group is Mary Lou Lao David part of?
Mary Lou David is linked to MemorialCare Medical Group.
How many Medicare patients does Mary Lou Lao David see?
CMS counts 26 Medicare patients who saw Mary Lou David in 2024, with an average age of 74.
Has Mary Lou Lao David received payments from drug or device companies?
CMS Open Payments shows $24 in general payments to Mary Lou David from 1 company from 2025 to 2025. The largest total came from Gilead Sciences, Inc.
How long has Mary Lou Lao David been practicing?
Mary Lou David graduated from medical school in 2008, 18 years ago.
Selling to primary care practices?
See primary care nurse practitioners in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card