Lacy Jay Nasseh, FNP
- Part D claims, 2024
- 126
- Hospital affiliations
- 2
- Industry payments
- $94
- Medical group
- 1
- State license
- 1
- Practice address
- 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598
- Practice phone
- Call (925) 939-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Lacy Nasseh'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.
Lacy Jay Nasseh is a family nurse practitioner in Walnut Creek, California
Lacy Nasseh practices at John Muir Medical Center, Walnut Creek in Walnut Creek, California, part of John Muir Health.
Lacy Nasseh's NPI, 1255054631, was assigned on September 21, 2022. Lacy Nasseh holds California license 95120763.
- NPI
- 1255054631NPI Registry (opens in a new tab)
- NPI enumeration date
- September 21, 2022
- NPI status
- Active
- Practice phone
- (925) 939-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Lacy Jay Nasseh practices at John Muir Medical Center, Walnut Creek in Walnut Creek, California
Lacy Nasseh's primary practice is John Muir Medical Center, Walnut Creek, at 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598 in Contra Costa County. The practice phone is (925) 939-3000.
- John Muir Medical Center, Walnut Creek1601 Ygnacio Valley Rd, Walnut Creek, CA 94598 · Contra Costa CountyPhone(925) 939-3000
Source: Dmand AI Affiliation Data
Lacy Jay Nasseh is affiliated with 3 sites of care and 1 medical group
Lacy Nasseh's primary practice is John Muir Medical Center, Walnut Creek in Walnut Creek, California, part of John Muir Health. The medical group on file is BASS Medical Group. Dmand AI also links Lacy Nasseh to 1 more hospital and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Lacy Jay Nasseh's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Lacy Nasseh practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| John Muir Medical Center, Walnut Creek | Available with a free account |
| +2 more affiliated sites | 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 John Muir Health and 6.2K+ hospitals, with verified contacts in the same login.
Lacy Jay Nasseh is one of 13,532 family nurse practitioners in California
Family is Lacy Nasseh's primary specialty in the NPI Registry, under taxonomy code 363LF0000X. Lacy Nasseh is licensed in California.
Specialties and state licenses
- Family nurse practitioner, CaliforniaPrimary
Family nurse practitioners near Lacy Nasseh
Counts of family 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
Lacy Jay Nasseh's patients have a median age of 55
Across all payers, Dmand AI patient panel data puts Lacy Nasseh's median patient age at 55, with 98% women.
Lacy Nasseh's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 55
Patient panel by sex, all payers
- Women98%
- Men0%
Source: Dmand AI Patient Panel Data
Lacy Jay Nasseh wrote 126 Medicare Part D claims in 2024
In 2024, Lacy Nasseh wrote 126 Medicare Part D claims for 44 patients. 83% of them were for generic drugs. CMS names the drug for 95 of them, across 3 drugs with 11 or more claims each, at $19,224 in total drug cost.
Lacy Nasseh's Part D claims by kind of drug, 2024
- Generic105 claims83%
- Brand-name21 claims17%
Lacy Nasseh'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 Lacy Nasseh's Part D claims, 2024
- Antibiotics20%25 of 126 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
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.
Lacy Jay Nasseh received $94 in industry payments in 2025
CMS Open Payments shows 4 general payments to Lacy Nasseh from 3 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $51.
Companies that paid Lacy Nasseh 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 Lacy Jay Nasseh'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 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 Lacy Jay Nasseh
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Lacy Jay Nasseh's NPI number?
Lacy Jay Nasseh's NPI number is 1255054631. It was assigned on September 21, 2022, and it is active in the NPI Registry.
What does Lacy Jay Nasseh specialize in?
Lacy Jay Nasseh is a family nurse practitioner in Walnut Creek, California. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).
Where does Lacy Jay Nasseh practice?
Lacy Nasseh practices at 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598. Lacy Nasseh's primary practice is John Muir Medical Center, Walnut Creek in Walnut Creek, California, part of John Muir Health. Dmand AI also links Lacy Nasseh to 1 hospital and 1 group practice or clinic.
What is Lacy Jay Nasseh's office phone number?
The practice phone on file for Lacy Nasseh is (925) 939-3000.
What is Lacy Jay Nasseh's medical license number?
Lacy Nasseh holds California license 95120763.
Which hospitals is Lacy Jay Nasseh affiliated with?
Lacy Nasseh practices at John Muir Medical Center, Walnut Creek in Walnut Creek, California. Dmand AI links Lacy Nasseh to 1 more hospital.
What medical group is Lacy Jay Nasseh part of?
Lacy Nasseh is linked to BASS Medical Group.
What drugs does Lacy Jay Nasseh prescribe most?
In 2024 Medicare Part D data, Lacy Nasseh's most prescribed drugs by claims were Estradiol, Nitrofurantoin Mono-Macro and Gemtesa.
Has Lacy Jay Nasseh received payments from drug or device companies?
CMS Open Payments shows $94 in general payments to Lacy Nasseh from 3 companies from 2025 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Lacy Jay Nasseh been practicing?
Lacy Nasseh graduated from medical school in 2020, 6 years ago.
Selling to family practices?
See family 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