John C. Friend, FNP, MSN
- Part D claims, 2024
- 4,221
- Hospital affiliations
- 1
- Industry payments
- $17
- Medical group
- 1
- State license
- 1
- Practice address
- 1001 Potrero Avenue, San Francisco, CA 94110
- Practice phone
- Call (415) 206-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find John Friend'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.
John C. Friend is a family nurse practitioner in San Francisco, California
John Friend practices at Zuckerberg San Francisco General Hospital and Trauma Center in San Francisco, California, part of City and County of San Francisco, CA.
John Friend's NPI, 1780890954, was assigned on May 15, 2007. John Friend holds California license 595780.
- NPI
- 1780890954NPI Registry (opens in a new tab)
- NPI enumeration date
- May 15, 2007
- NPI status
- Active
- Practice phone
- (415) 206-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
John C. Friend practices at Zuckerberg San Francisco General Hospital and Trauma Center in San Francisco, California
John Friend's primary practice is Zuckerberg San Francisco General Hospital and Trauma Center, at 1001 Potrero Avenue, San Francisco, CA 94110 in San Francisco County. The practice phone is (415) 206-8000.
- Zuckerberg San Francisco General Hospital and Trauma Center1001 Potrero Avenue, San Francisco, CA 94110 · San Francisco CountyPhone(415) 206-8000
Source: Dmand AI Affiliation Data
John C. Friend is affiliated with 2 sites of care and 1 medical group
John Friend's primary practice is Zuckerberg San Francisco General Hospital and Trauma Center in San Francisco, California, part of City and County of San Francisco, CA. The medical group on file is San Francisco Public Health Laboratory. Dmand AI also links John Friend to 1 more group practice or clinic, named with a free account. John Friend's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at John C. Friend's practice
Dmand AI tracks the electronic health record (EHR) system at each site where John Friend practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Zuckerberg San Francisco General Hospital and Trauma Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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John C. Friend is one of 13,532 family nurse practitioners in California
Family is John Friend's primary specialty in the NPI Registry, under taxonomy code 363LF0000X. John Friend is licensed in California.
Specialties and state licenses
- Family nurse practitioner, CaliforniaPrimary
Family nurse practitioners near John Friend
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
John C. Friend's patients have a median age of 64
Across all payers, Dmand AI patient panel data puts John Friend's median patient age at 64, with 5% women.
John Friend's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women5%
- Men94%
Source: Dmand AI Patient Panel Data
John C. Friend wrote 4,221 Medicare Part D claims in 2024
In 2024, John Friend wrote 4,221 Medicare Part D claims for 116 patients. 72% of them were for generic drugs.
John Friend's Part D claims by kind of drug, 2024
- Generic3,019 claims72%
- Brand-name1,190 claims28%
- Other12 claims0%
Drug classes CMS tracks in John Friend's Part D claims, 2024
- Opioids1%32 of 4,221 claims
- Antibiotics2%91 of 4,221 claims
- Antipsychotics, patients 65 and over1%34 of 4,221 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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John C. Friend received $17 in industry payments in 2025
CMS Open Payments shows 1 general payment to John Friend from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $17.
Companies that paid John Friend 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 John C. Friend'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 (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 John C. Friend
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is John C. Friend's NPI number?
John C. Friend's NPI number is 1780890954. It was assigned on May 15, 2007, and it is active in the NPI Registry.
What does John C. Friend specialize in?
John C. Friend is a family nurse practitioner in San Francisco, California. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).
Where does John C. Friend practice?
John Friend practices at 1001 Potrero Avenue, San Francisco, CA 94110. John Friend's primary practice is Zuckerberg San Francisco General Hospital and Trauma Center in San Francisco, California, part of City and County of San Francisco, CA. Dmand AI also links John Friend to 1 group practice or clinic.
What is John C. Friend's office phone number?
The practice phone on file for John Friend is (415) 206-8000.
What is John C. Friend's medical license number?
John Friend holds California license 595780.
Which hospitals is John C. Friend affiliated with?
John Friend practices at Zuckerberg San Francisco General Hospital and Trauma Center in San Francisco, California.
What medical group is John C. Friend part of?
John Friend is linked to San Francisco Public Health Laboratory.
Has John C. Friend received payments from drug or device companies?
CMS Open Payments shows $17 in general payments to John Friend from 1 company from 2025 to 2025. The largest total came from Merck Sharp & Dohme Corporation.
How long has John C. Friend been practicing?
John Friend's NPI was assigned in 2007.
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