Janet William, NP
- Part D claims, 2024
- 550
- Industry payments
- $2,290
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 18000 Studebaker Rd Ste 800 Suite 800, Cerritos, CA 90703
- Practice phone
- Call (562) 735-3226
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Zzz80927z - Cerritos
Multi-specialty group site · Cerritos, California
Find Janet William'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.
Janet William is a nurse practitioner in Cerritos, California
Janet William practices at Zzz80927z - Cerritos in Cerritos, California.
Janet William's NPI, 1821505587, was assigned on January 3, 2018. Janet William holds California license NP95007086.
- NPI
- 1821505587NPI Registry (opens in a new tab)
- NPI enumeration date
- January 3, 2018
- NPI status
- Active
- Practice phone
- (562) 735-3226
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Janet William practices at Zzz80927z - Cerritos in Cerritos, California
Janet William's primary practice is Zzz80927z - Cerritos, at 18000 Studebaker Rd Ste 800 Suite 800, Cerritos, CA 90703. The practice phone is (562) 735-3226.
- Zzz80927z - Cerritos18000 Studebaker Rd Ste 800 Suite 800, Cerritos, CA 90703Phone(562) 735-3226
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Janet William is affiliated with 1 site of care and 1 medical group
Janet William's primary practice is Zzz80927z - Cerritos in Cerritos, California. The medical group on file is Inland Cancer Center.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Janet William's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Janet William practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Zzz80927z - Cerritos | Available with a free account |
Source: Dmand AI Technology Install Data
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Janet William is one of 5,983 nurse practitioners in California
Nurse practitioner is Janet William's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Janet William is licensed in California.
Specialties and state licenses
- Nurse practitioner, CaliforniaPrimary
Nurse practitioners near Janet William
Counts of 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
Janet William's patients have a median age of 59
Across all payers, Dmand AI patient panel data puts Janet William's median patient age at 59, with 83% women.
Janet William's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women83%
- Men17%
Source: Dmand AI Patient Panel Data
Janet William wrote 550 Medicare Part D claims in 2024
In 2024, Janet William wrote 550 Medicare Part D claims for 111 patients. 88% of them were for generic drugs.
Janet William's Part D claims by kind of drug, 2024
- Generic483 claims88%
- Brand-name and other67 claims12%
Drug classes CMS tracks in Janet William's Part D claims, 2024
- Opioids30%165 of 550 claims
- Antibiotics5%25 of 550 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Janet William received $2,290 in industry payments in 2025
CMS Open Payments shows 91 general payments to Janet William from 34 drug and device companies in 2025. Food and beverage make up the largest share, 90% of the total. AstraZeneca Pharmaceuticals LP paid the most, $232.
General payments to Janet William by kind, 2025 to 2025
- Food and beverage$2,06490%
- Education$22610%
Companies that paid Janet William 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 Janet William'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 Data |
| 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 Janet William
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Janet William's NPI number?
Janet William's NPI number is 1821505587. It was assigned on January 3, 2018, and it is active in the NPI Registry.
What does Janet William specialize in?
Janet William is a nurse practitioner in Cerritos, California. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does Janet William practice?
Janet William practices at 18000 Studebaker Rd Ste 800 Suite 800, Cerritos, CA 90703. Janet William's primary practice is Zzz80927z - Cerritos in Cerritos, California.
What is Janet William's office phone number?
The practice phone on file for Janet William is (562) 735-3226.
What is Janet William's medical license number?
Janet William holds California license NP95007086.
What medical group is Janet William part of?
Janet William is linked to Inland Cancer Center.
Has Janet William received payments from drug or device companies?
CMS Open Payments shows $2,290 in general payments to Janet William from 34 companies from 2025 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Janet William been practicing?
Janet William's NPI was assigned in 2018.
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