Arterioscler Thromb Vasc Biol
Angiopoietin-Like Protein 3Angiopoietin-like ProteinsAntibodies, Monoclonal
Dr. Ron Samuel Newfield, MD
NPI1679644421
- Part D claims, 2024
- 43
- Publications
- 54
- Clinical trials
- 3
- Hospital affiliations
- 1
- Industry payments
- $30,662
- Practice address
- 3020 Childrens Way, San Diego, CA 92123
- Practice phone
- Call (858) 576-1700
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Newfield'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. Ron Samuel Newfield is a pediatric endocrinology physician in San Diego, California
Dr. Newfield practices at Rady Children's Hospital San Diego in San Diego, California, part of Rady Children's Health.
Dr. Newfield's NPI, 1679644421, was assigned on November 13, 2006. Dr. Newfield graduated from Technion-Israel Inst of Technology Faculty of Medicine in 1989. Dr. Newfield holds California license A73875.
NPI and contact details
- NPI
- 1679644421NPI Registry (opens in a new tab)
- NPI enumeration date
- November 13, 2006
- NPI status
- Active
- Practice phone
- (858) 576-1700
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 62
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Ron Samuel Newfield practices at Rady Children's Hospital San Diego in San Diego, California
Dr. Newfield's primary practice is Rady Children's Hospital San Diego, at 3020 Childrens Way, San Diego, CA 92123 in San Diego County. The practice phone is (858) 576-1700.
- Rady Children's Hospital San Diego3020 Childrens Way, San Diego, CA 92123 · San Diego CountyPhone(858) 576-1700
Source: Dmand AI Affiliation Data
Dr. Ron Samuel Newfield is affiliated with 4 sites of care and 2 medical groups
Dr. Newfield's primary practice is Rady Children's Hospital San Diego in San Diego, California, part of Rady Children's Health. The medical group on file is Rady Children's Specialists of San Diego. Dmand AI also links Dr. Newfield to 2 more group practices and clinics, 1 therapy and rehab clinic and 1 medical group, each named with a free account.
Rady Children's Specialists of San Diego2 group practices and clinicsNames with a free account1 therapy and rehab clinicName with a free account1 medical groupName with a free account
See all 6 affiliations for Dr. NewfieldSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ron Samuel Newfield's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Newfield practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Rady Children's Hospital San Diego | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ron Samuel Newfield is one of 198 pediatric endocrinology physicians in California
Pediatric endocrinology is Dr. Newfield's primary specialty in the NPI Registry, under taxonomy code 2080P0205X. Dr. Newfield is board certified in pediatric endocrinology by the American Board of Pediatrics. Dmand AI has Dr. Newfield's licenses on file in 2 states: California and New York.
Specialties and state licenses
- Pediatric endocrinology, CaliforniaPrimary
- New York license
Pediatric endocrinology physicians near Dr. Newfield
Counts of pediatric endocrinology physicians with a Dmand AI profile, by place and practice. Each opens the list.
198pediatric endocrinology physicians in California20pediatric endocrinology physicians in San Diego13pediatric endocrinology physicians at Rady Children's Hospital San Diego
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Ron Samuel Newfield's patients have a median age of 14
Across all payers, Dmand AI patient panel data puts Dr. Newfield's median patient age at 14, with 52% women.
Dr. Newfield's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 14
Patient panel by sex, all payers
- Women52%
- Men47%
Source: Dmand AI Patient Panel Data
Dr. Ron Samuel Newfield wrote 43 Medicare Part D claims in 2024
In 2024, Dr. Newfield wrote 43 Medicare Part D claims. 67% of them were for generic drugs. CMS names the drug for 26 of them, across 2 drugs with 11 or more claims each, at $6,092 in total drug cost.
Part D claims, 202443
Drugs named by CMS2
Total drug cost$6,092
Dr. Newfield's Part D claims by kind of drug, 2024
- Generic29 claims67%
- Brand-name and other14 claims33%
Dr. Newfield'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.
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
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Dr. Ron Samuel Newfield has 54 publications on record
Dmand AI links 54 papers to Dr. Newfield, published from 2006 to 2025. 2021 was the busiest year, with 6. The most frequent topics are Obesity, Pedigree and Adrenocorticotropic Hormone. Dr. Newfield has published most often in J Clin Endocrinol Metab. Dr. Newfield's most frequent co-authors are Wen Jiang, MD, Wen Jiang, MD and Maja Marinkovic, MD.
Papers54
Years published2006 to 2025
Dr. Newfield's papers by year, 2015 to 2025
Topics Dr. Newfield writes about most
- Obesity
- Pedigree
- Adrenocorticotropic Hormone
- Body Mass Index
- Diabetes Mellitus, Type 1
- DNA Mutational Analysis
- Ethnicity
- Insulin
Dr. Newfield's most frequent co-authors
Recent publications by Dr. Newfield
Int J Pediatr Otorhinolaryngol
Health Information SystemsHospitals, PediatricHypocalcemia
Int J Pediatr Otorhinolaryngol
DNA Mutational AnalysisHigh-Throughput Nucleotide SequencingOncogene Proteins, Fusion
See who Dr. Newfield researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Newfield works with, so you can find a warm path to the right pediatric endocrinology physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ron Samuel Newfield has worked on 3 clinical trials
Dmand AI links Dr. Newfield to 3 clinical trials. 1 is still active or recruiting. Conditions studied include Adrenal Hyperplasia, Congenital and Adrenogenital Syndrome.
Clinical trials with Dr. Newfield by phase
- NonePhase 1: no trials
- 1Phase 1/2: 1 trial
- 1Phase 2: 1 trial
- 1Phase 3: 1 trial
- NonePhase 4: no trials
Conditions in Dr. Newfield's trials
- Adrenal Hyperplasia, Congenital
- Adrenogenital Syndrome
Investigators on the most trials with Dr. Newfield
- Andrew N. Dauber, MD1 shared trial
- Paul Michael Desrosiers, MD1 shared trial
- Asheesh Kumar Dewan, MD1 shared trial
Recent clinical trials with Dr. Newfield
A Study of Gene Therapy for Classic Congenital Adrenal Hyperplasia (CAH) (opens in a new tab)
Active, not recruitingPhase 1/2
Adrenal Hyperplasia, CongenitalAdrenogenital SyndromeAAV BBP-631
A Ph2b to Evaluate Tildacerfont in the Reduction of Glucocorticoid Steroid Doses in Adult CAH (opens in a new tab)
TerminatedPhase 2
Adrenal Hyperplasia, CongenitalAdrenogenital Syndrome
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Ron Samuel Newfield received $30,662 in industry payments from 2016 to 2025
CMS Open Payments shows 296 general payments to Dr. Newfield from 36 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 71% of the total. Neurocrine BioSciences, Inc. paid the most, $21,582. It also lists 19 research payments totaling $118,030 from 2024 to 2025.
General payments to Dr. Newfield by program year, 2016 to 2025
General payments to Dr. Newfield by kind, 2016 to 2025
$30.7Kin total
- Consulting fees$21,90071%
- Food and beverage$7,10923%
- Travel and lodging$1,5055%
- Education$1480%
Companies that paid Dr. Newfield the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ron Samuel Newfield has 1 award and honors on record
Dmand AI lists 1 award for Dr. Newfield, most recently Regional Top Doctor in 2014.
Awards and honors for Dr. Newfield
- 2014
- Regional Top Doctor
Source: Dmand AI Professional Profile Data
Dr. Ron Samuel Newfield graduated from Technion-Israel Inst of Technology Faculty of Medicine
Dr. Newfield graduated from Technion-Israel Inst of Technology Faculty of Medicine in 1989. Dr. Newfield is a member of ENDO.
- Medical school
- Board certified in pediatric endocrinology
Source: Dmand AI Professional Profile Data
Dr. Ron Samuel Newfield accepts plans from 10 insurance carriers
Dr. Newfield is in network with 10 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 5. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Molina
- AR State Medicaid
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- Elevance
- +2 more carriersWith a free account
Plan types Dr. Newfield accepts, by number of carriers
- PPO5
- HMO4
- POS4
- Medicare3
- EPO2
- Medicaid2
Source: Dmand AI Insurance Network Data
Sources for Dr. Ron Samuel Newfield'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) |
| 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. Ron Samuel Newfield
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. Ron Samuel Newfield's NPI number?
Dr. Ron Samuel Newfield's NPI number is 1679644421. It was assigned on November 13, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ron Samuel Newfield?
Dr. Ron Samuel Newfield is a pediatric endocrinology physician in San Diego, California. The primary specialty in the NPI Registry is Pediatric Endocrinology Physician (taxonomy code 2080P0205X).
Where does Dr. Ron Samuel Newfield practice?
Dr. Newfield practices at 3020 Childrens Way, San Diego, CA 92123. Dr. Newfield's primary practice is Rady Children's Hospital San Diego in San Diego, California, part of Rady Children's Health. Dmand AI also links Dr. Newfield to 2 group practices and clinics, 1 therapy and rehab clinic and 1 medical group.
What is Dr. Ron Samuel Newfield's office phone number?
The practice phone on file for Dr. Newfield is (858) 576-1700.
What is Dr. Ron Samuel Newfield's medical license number?
Dr. Newfield holds California license A73875, one of the licenses on file in 2 states.
Which states has Dr. Ron Samuel Newfield been licensed in?
Dmand AI has state licenses on file for Dr. Newfield in California (2001 to 2026) and New York (1993 to 1999).
Which hospitals is Dr. Ron Samuel Newfield affiliated with?
Dr. Newfield practices at Rady Children's Hospital San Diego in San Diego, California.
What medical group is Dr. Ron Samuel Newfield part of?
Dr. Newfield is linked to Rady Children's Specialists of San Diego. Dmand AI links Dr. Newfield to 1 more medical group.
Is Dr. Ron Samuel Newfield board certified?
Yes. Dr. Newfield is board certified in pediatric endocrinology by the American Board of Pediatrics.
Where did Dr. Ron Samuel Newfield go to medical school?
Dr. Newfield graduated from Technion-Israel Inst of Technology Faculty of Medicine in 1989.
Show 6 more questionsShow fewer questions
What drugs does Dr. Ron Samuel Newfield prescribe most?
In 2024 Medicare Part D data, Dr. Newfield's most prescribed drugs by claims were Colesevelam HCl and Ezetimibe.
Has Dr. Ron Samuel Newfield received payments from drug or device companies?
CMS Open Payments shows $30,662 in general payments to Dr. Newfield from 36 companies from 2016 to 2025. The largest total came from Neurocrine BioSciences, Inc.
How long has Dr. Ron Samuel Newfield been practicing?
Dr. Newfield graduated from medical school in 1989, 37 years ago.
Does Dr. Ron Samuel Newfield do research?
Dmand AI links 54 publications to Dr. Newfield, published from 2006 to 2025. Dr. Newfield has worked on 3 clinical trials.
Who does Dr. Ron Samuel Newfield publish with?
Dr. Newfield's most frequent co-authors are Wen Jiang, MD (6 shared papers), Wen Jiang, MD (5 shared papers) and Maja Marinkovic, MD (5 shared papers).
What insurance does Dr. Ron Samuel Newfield accept?
Dr. Newfield is in network with 10 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 5. Check the plan with the practice before a visit.
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