Dr. Nerys C. Benfield, MD
- Publications
- 29
- Clinical trials
- 1
- Hospital affiliations
- 1
- Industry payments
- $3,982
- Medical groups
- 3
- Practice address
- 505 Parnassus Ave, Box 0296, San Francisco, CA 94143
- Practice phone
- Call (415) 353-2733
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Benfield'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.
Dr. Nerys C. Benfield is an OB-GYN in San Francisco, California
Dr. Benfield practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health.
Dr. Benfield's NPI, 1033245972, was assigned on February 26, 2007. Dr. Benfield graduated from UCSF School of Medicine in 2005. Dr. Benfield holds California license A98810.
- NPI
- 1033245972NPI Registry (opens in a new tab)
- NPI enumeration date
- February 26, 2007
- NPI status
- Active
- Practice phone
- (415) 353-2733
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Nerys C. Benfield practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California
Dr. Benfield's primary practice is UCSF Helen Diller Medical Center at Parnassus Heights, at 505 Parnassus Ave, Box 0296, San Francisco, CA 94143 in San Francisco County. The practice phone is (415) 353-2733.
- UCSF Helen Diller Medical Center at Parnassus Heights505 Parnassus Ave, Box 0296, San Francisco, CA 94143 · San Francisco CountyPhone(415) 353-2733
Source: Dmand AI Affiliation Data
Dr. Nerys C. Benfield is affiliated with 3 sites of care and 3 medical groups
Dr. Benfield's primary practice is UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health. The medical group on file is Montefiore Einstein Faculty Practice Group. Dmand AI also links Dr. Benfield to 2 more group practices and clinics and 2 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Nerys C. Benfield's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Benfield practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UCSF Helen Diller Medical Center at Parnassus Heights | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Nerys C. Benfield is one of 4,642 OB-GYNs in California
Obstetrics and gynecology is Dr. Benfield's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Benfield is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology. Dmand AI has Dr. Benfield's licenses on file in 2 states: California and New York.
Specialties and state licenses
- Obstetrics and gynecology, CaliforniaPrimary
- New York license
OB-GYNs near Dr. Benfield
Counts of OB-GYNs 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
Dr. Nerys C. Benfield's patients have a median age of 38
Across all payers, Dmand AI patient panel data puts Dr. Benfield's median patient age at 38, with 98% women.
Dr. Benfield's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 38
Patient panel by sex, all payers
- Women98%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Nerys C. Benfield has 29 publications on record
Dmand AI links 29 papers to Dr. Benfield, published from 2010 to 2025. 2021 was the busiest year, with 4. The most frequent topics are Democratic Republic of the Congo, Family Planning Services and Vaginal Fistula. Dr. Benfield has published most often in Contraception. Dr. Benfield's most frequent co-authors are Bianca Maria Stifani, MD, Erika Elkina Levi, MD and Jessica Maria Atrio, MD.
Dr. Benfield's papers by year, 2015 to 2025
Topics Dr. Benfield writes about most
- Democratic Republic of the Congo
- Family Planning Services
- Vaginal Fistula
- Contraception
- Counseling
- Attitude of Health Personnel
- Contraception Behavior
- COVID-19
Dr. Benfield's most frequent co-authors
- Bianca Maria Stifani, MD4 shared papers
- Erika Elkina Levi, MD3 shared papers
- Jessica Maria Atrio, MD2 shared papers
Recent publications by Dr. Benfield
Contraception
See who Dr. Benfield researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Benfield works with, so you can find a warm path to the right OB-GYNs.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Nerys C. Benfield has worked on 1 clinical trial
Dmand AI links Dr. Benfield to 1 clinical trial.
Recent clinical trials with Dr. Benfield
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Nerys C. Benfield received $3,982 in industry payments from 2016 to 2018
CMS Open Payments shows 18 general payments to Dr. Benfield from 3 drug and device companies from 2016 to 2018. Speaker and faculty fees make up the largest share, 50% of the total. Merck Sharp & Dohme Corporation paid the most, $2,236.
General payments to Dr. Benfield by program year, 2016 to 2018
General payments to Dr. Benfield by kind, 2016 to 2018
- Speaker and faculty fees$2,00050%
- Consulting fees$1,50038%
- Food and beverage$46912%
- Travel and lodging$130%
Companies that paid Dr. Benfield the most, 2016 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Nerys C. Benfield has 1 award and honors on record
Dmand AI lists 1 award for Dr. Benfield.
Awards and honors for Dr. Benfield
- Undated
- ACOG Fellow
Source: Dmand AI Professional Profile Data
Dr. Nerys C. Benfield graduated from UCSF School of Medicine
Dr. Benfield graduated from UCSF School of Medicine in 2005. Dr. Benfield is a member of American College of Obstetricians and Gynecologists.
- Medical school
- Board certified in obstetrics & gynecology
Source: Dmand AI Professional Profile Data
Dr. Nerys C. Benfield accepts plans from 8 insurance carriers
Dr. Benfield is in network with 8 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- Blue Cross and Blue Shield of Kansas City
- Molina
- NY State Medicaid
Plan types Dr. Benfield accepts, by number of carriers
- Medicare6
- PPO5
- EPO2
- HMO2
- POS2
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Nerys C. Benfield'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 |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| 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 Dr. Nerys C. Benfield
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Nerys C. Benfield's NPI number?
Dr. Nerys C. Benfield's NPI number is 1033245972. It was assigned on February 26, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Nerys C. Benfield?
Dr. Nerys C. Benfield is an OB-GYN in San Francisco, California. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Nerys C. Benfield practice?
Dr. Benfield practices at 505 Parnassus Ave, Box 0296, San Francisco, CA 94143. Dr. Benfield's primary practice is UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health. Dmand AI also links Dr. Benfield to 2 group practices and clinics and 2 medical groups.
What is Dr. Nerys C. Benfield's office phone number?
The practice phone on file for Dr. Benfield is (415) 353-2733.
What is Dr. Nerys C. Benfield's medical license number?
Dr. Benfield holds California license A98810, one of the licenses on file in 2 states.
Which states has Dr. Nerys C. Benfield been licensed in?
Dmand AI has state licenses on file for Dr. Benfield in California (2022 to 2026) and New York (2011 to 2026).
Which hospitals is Dr. Nerys C. Benfield affiliated with?
Dr. Benfield practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California.
What medical group is Dr. Nerys C. Benfield part of?
Dr. Benfield is linked to Montefiore Einstein Faculty Practice Group. Dmand AI links Dr. Benfield to 2 more medical groups.
Is Dr. Nerys C. Benfield board certified?
Yes. Dr. Benfield is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology.
Where did Dr. Nerys C. Benfield go to medical school?
Dr. Benfield graduated from UCSF School of Medicine in 2005.
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Has Dr. Nerys C. Benfield received payments from drug or device companies?
CMS Open Payments shows $3,982 in general payments to Dr. Benfield from 3 companies from 2016 to 2018. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Nerys C. Benfield been practicing?
Dr. Benfield graduated from medical school in 2005, 21 years ago.
Does Dr. Nerys C. Benfield do research?
Dmand AI links 29 publications to Dr. Benfield, published from 2010 to 2025. Dr. Benfield has worked on 1 clinical trial.
Who does Dr. Nerys C. Benfield publish with?
Dr. Benfield's most frequent co-authors are Bianca Maria Stifani, MD (4 shared papers), Erika Elkina Levi, MD (3 shared papers) and Jessica Maria Atrio, MD (2 shared papers).
What insurance does Dr. Nerys C. Benfield accept?
Dr. Benfield is in network with 8 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
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