Mary R. Nelson, FNP-C
- Part D claims, 2024
- 1,467
- Hospital affiliations
- 1
- Industry payments
- $163
- Medical group
- 1
- State license
- 1
- Practice address
- 2772 Johnson Dr, Ventura, CA 93003
- Practice phone
- Call (805) 642-1430
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Primary Medical Group of Ventura County Inc
Ventura, California
Find Mary Nelson'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 R. Nelson is a family nurse practitioner in Ventura, California
Mary Nelson practices at Primary Medical Group of Ventura County Inc in Ventura, California.
Mary Nelson's NPI, 1285846220, was assigned on May 3, 2007. Mary Nelson holds California license 449374.
- NPI
- 1285846220NPI Registry (opens in a new tab)
- NPI enumeration date
- May 3, 2007
- NPI status
- Active
- Practice phone
- (805) 642-1430
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Mary R. Nelson practices at Primary Medical Group of Ventura County Inc in Ventura, California
Mary Nelson's primary practice is Primary Medical Group of Ventura County Inc, at 2772 Johnson Dr, Ventura, CA 93003 in Ventura County. The practice phone is (805) 642-1430.
- Primary Medical Group of Ventura County Inc2772 Johnson Dr, Ventura, CA 93003 · Ventura CountyPhone(805) 642-1430
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Mary R. Nelson is affiliated with 3 sites of care and 1 medical group
Mary Nelson's primary practice is Primary Medical Group of Ventura County Inc in Ventura, California. Mary Nelson is also affiliated with Community Memorial Hospital - Ojai. The medical group on file is Primary Medical Group. Dmand AI also links Mary Nelson to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Mary R. Nelson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mary Nelson practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Primary Medical Group of Ventura County Inc | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Mary R. Nelson is one of 13,532 family nurse practitioners in California
Family is Mary Nelson's primary specialty in the NPI Registry, under taxonomy code 363LF0000X. Mary Nelson is licensed in California.
Specialties and state licenses
- Family nurse practitioner, CaliforniaPrimary
Family nurse practitioners near Mary Nelson
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
Mary R. Nelson's patients have a median age of 72
Across all payers, Dmand AI patient panel data puts Mary Nelson's median patient age at 72, with 79% women.
Mary Nelson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women79%
- Men19%
Source: Dmand AI Patient Panel Data
Mary R. Nelson wrote 1,467 Medicare Part D claims in 2024
In 2024, Mary Nelson wrote 1,467 Medicare Part D claims for 295 patients. 91% of them were for generic drugs.
Mary Nelson's Part D claims by kind of drug, 2024
- Generic1,340 claims91%
- Brand-name115 claims8%
- Other12 claims1%
Drug classes CMS tracks in Mary Nelson's Part D claims, 2024
- Opioids2%25 of 1,467 claims
- Antibiotics2%34 of 1,467 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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Mary R. Nelson received $163 in industry payments in 2025
CMS Open Payments shows 2 general payments to Mary Nelson from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Vertex Pharmaceuticals Incorporated paid the most, $103.
Companies that paid Mary Nelson 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 R. Nelson'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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 (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 R. Nelson
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 R. Nelson's NPI number?
Mary R. Nelson's NPI number is 1285846220. It was assigned on May 3, 2007, and it is active in the NPI Registry.
What does Mary R. Nelson specialize in?
Mary R. Nelson is a family nurse practitioner in Ventura, California. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).
Where does Mary R. Nelson practice?
Mary Nelson practices at 2772 Johnson Dr, Ventura, CA 93003. Mary Nelson's primary practice is Primary Medical Group of Ventura County Inc in Ventura, California. Dmand AI also links Mary Nelson to 1 group practice or clinic.
What is Mary R. Nelson's office phone number?
The practice phone on file for Mary Nelson is (805) 642-1430.
What is Mary R. Nelson's medical license number?
Mary Nelson holds California license 449374.
Which hospitals is Mary R. Nelson affiliated with?
Mary Nelson is affiliated with Community Memorial Hospital - Ojai.
What medical group is Mary R. Nelson part of?
Mary Nelson is linked to Primary Medical Group.
Has Mary R. Nelson received payments from drug or device companies?
CMS Open Payments shows $163 in general payments to Mary Nelson from 2 companies from 2025 to 2025. The largest total came from Vertex Pharmaceuticals Incorporated.
How long has Mary R. Nelson been practicing?
Mary Nelson graduated from medical school in 1998, 28 years ago.
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