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Dr. Stephen John Ronan, MD
NPI1649239971
- Part D claims, 2024
- 114
- Publications
- 6
- Clinical trials
- 13
- Industry payments
- $14,419
- Affiliated sites
- 1
- Practice address
- 8403 N Fallbrook Ave, West Hills, CA 91304
- Practice phone
- Call (800) 877-2515
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Quest Diagnostics
West Hills, California
Find Dr. Ronan'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. Stephen John Ronan is a plastic surgeon in West Hills, California
Dr. Ronan practices at Quest Diagnostics in West Hills, California.
Dr. Ronan's NPI, 1649239971, was assigned on March 23, 2006. Dr. Ronan graduated from VCU School of Medicine in 1995. Dr. Ronan holds California license A72320.
NPI and contact details
- NPI
- 1649239971NPI Registry (opens in a new tab)
- NPI enumeration date
- March 23, 2006
- NPI status
- Active
- Practice phone
- (800) 877-2515
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Stephen John Ronan practices at Quest Diagnostics in West Hills, California
Dr. Ronan's primary practice is Quest Diagnostics, at 8403 N Fallbrook Ave, West Hills, CA 91304 in Los Angeles County. The practice phone is (800) 877-2515.
- Quest Diagnostics8403 N Fallbrook Ave, West Hills, CA 91304 · Los Angeles CountyPhone(800) 877-2515
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Stephen John Ronan is affiliated with 2 sites of care
Dr. Ronan's primary practice is Quest Diagnostics in West Hills, California. Dmand AI also links Dr. Ronan to 1 physician office, named with a free account.
Quest DiagnosticsPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Stephen John Ronan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ronan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Quest Diagnostics | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Stephen John Ronan is one of 778 plastic surgeons in California
Plastic surgery is Dr. Ronan's primary specialty in the NPI Registry, under taxonomy code 208200000X. Dr. Ronan is board certified in plastic surgery by the American Board of Plastic Surgery. Dmand AI has Dr. Ronan's licenses on file in 3 states: California, Virginia and Nevada.
Specialties and state licenses
- Plastic surgery, CaliforniaPrimary
- Virginia license
- Nevada license
Plastic surgeons near Dr. Ronan
Counts of plastic surgeons with a Dmand AI profile, by place and practice. Each opens the list.
778plastic surgeons in California
3plastic surgeons in West Hills
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Stephen John Ronan's patients have a median age of 37
Across all payers, Dmand AI patient panel data puts Dr. Ronan's median patient age at 37, with 71% women.
Dr. Ronan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 37
Patient panel by sex, all payers
- Women71%
- Men29%
Source: Dmand AI Patient Panel Data
Dr. Stephen John Ronan wrote 114 Medicare Part D claims in 2024
In 2024, Dr. Ronan wrote 114 Medicare Part D claims for 32 patients. 100% of them were for generic drugs. CMS names the drug for 91 of them, across 6 drugs with 11 or more claims each, at $641 in total drug cost. In 2023, CMS named 102 claims across 7 drugs.
Part D claims, 2024114
Drugs named by CMS6
Total drug cost$641
Part D patients32
Dr. Ronan'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.
Drug classes CMS tracks in Dr. Ronan's Part D claims, 2024
- Antibiotics19%22 of 114 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1022024: 9111%
Drugs named by CMS: 6 in 2024, 7 in 2023.
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. Stephen John Ronan has 6 publications on record
Dmand AI links 6 papers to Dr. Ronan, published from 2020 to 2022. The most frequent topics are Biopsy. Dr. Ronan's most frequent co-authors are Harry D. Bear, MD, Laura Eaton, MD and Jeffrey Stuart Fromowitz, MD.
Papers6
Years published2020 to 2022
Topics Dr. Ronan writes about most
- Biopsy
Dr. Ronan's most frequent co-authors
- Harry D. Bear, MD1 shared paper
- Laura Eaton, MD1 shared paper
- Jeffrey Stuart Fromowitz, MD1 shared paper
Recent publications by Dr. Ronan
AdipocytesCatheter AblationCells, Cultured
BiopsyCollagenCollagen Type I
See who Dr. Ronan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Ronan works with, so you can find a warm path to the right plastic surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Stephen John Ronan has worked on 13 clinical trials
Dmand AI links Dr. Ronan to 13 clinical trials. Conditions studied include Cicatrix, Acneiform Eruptions and Cellulite. Cutera Inc. sponsors the most, 13.
Conditions in Dr. Ronan's trials
- Cicatrix
- Acneiform Eruptions
- Cellulite
- Hypertrophy
- Rosacea
Investigators on the most trials with Dr. Ronan
- Jeffrey Steven Dover, MD2 shared trials
- Ashish C. Bhatia, MD1 shared trial
- Jacqueline Marie Calkin, MD1 shared trial
Recent clinical trials with Dr. Ronan
CicatrixFibrosisExcel V™ Laser & Micro-Lens Array Attach
RosaceaCicatrixExcel V™ Laser With Green Genesis
truSculpt
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Stephen John Ronan received $14,419 in industry payments from 2016 to 2025
CMS Open Payments shows 167 general payments to Dr. Ronan from 13 drug and device companies from 2016 to 2025. Gifts make up the largest share, 47% of the total. ZO Skin Health, Inc. paid the most, $6,714.
General payments to Dr. Ronan by program year, 2016 to 2025
General payments to Dr. Ronan by kind, 2016 to 2025
$14.4Kin total
- Gifts$6,71447%
- Food and beverage$5,55539%
- Speaker and faculty fees$2,00014%
- Consulting fees$1501%
Companies that paid Dr. Ronan 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. Stephen John Ronan has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Ronan.
Awards and honors for Dr. Ronan
- Undated
- ACS Fellow
- Super Doc
Source: Dmand AI Professional Profile Data
Dr. Stephen John Ronan graduated from VCU School of Medicine
Dr. Ronan graduated from VCU School of Medicine in 1995. Dr. Ronan is a member of ACS and ASPS.
- Medical school
- Board certified in plastic surgery
Source: Dmand AI Professional Profile Data
Sources for Dr. Stephen John Ronan'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 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 |
| 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. Stephen John Ronan
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. Stephen John Ronan's NPI number?
Dr. Stephen John Ronan's NPI number is 1649239971. It was assigned on March 23, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Stephen John Ronan?
Dr. Stephen John Ronan is a plastic surgeon in West Hills, California. The primary specialty in the NPI Registry is Plastic Surgery Physician (taxonomy code 208200000X).
Where does Dr. Stephen John Ronan practice?
Dr. Ronan practices at 8403 N Fallbrook Ave, West Hills, CA 91304. Dr. Ronan's primary practice is Quest Diagnostics in West Hills, California. Dmand AI also links Dr. Ronan to 1 physician office.
What is Dr. Stephen John Ronan's office phone number?
The practice phone on file for Dr. Ronan is (800) 877-2515.
What is Dr. Stephen John Ronan's medical license number?
Dr. Ronan holds California license A72320, one of the licenses on file in 3 states.
Which states has Dr. Stephen John Ronan been licensed in?
Dmand AI has state licenses on file for Dr. Ronan in California (2000 to 2026), Virginia (1997 to 2026) and Nevada (2014 to 2025).
Is Dr. Stephen John Ronan board certified?
Yes. Dr. Ronan is board certified in plastic surgery by the American Board of Plastic Surgery.
Where did Dr. Stephen John Ronan go to medical school?
Dr. Ronan graduated from VCU School of Medicine in 1995.
What drugs does Dr. Stephen John Ronan prescribe most?
In 2024 Medicare Part D data, Dr. Ronan's most prescribed drugs by claims were Minoxidil, Cephalexin and Gabapentin.
Has Dr. Stephen John Ronan received payments from drug or device companies?
CMS Open Payments shows $14,419 in general payments to Dr. Ronan from 13 companies from 2016 to 2025. The largest total came from ZO Skin Health, Inc.
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How long has Dr. Stephen John Ronan been practicing?
Dr. Ronan graduated from medical school in 1995, 31 years ago.
Does Dr. Stephen John Ronan do research?
Dmand AI links 6 publications to Dr. Ronan, published from 2020 to 2022. Dr. Ronan has worked on 13 clinical trials.
Who does Dr. Stephen John Ronan publish with?
Dr. Ronan's most frequent co-authors are Harry D. Bear, MD (1 shared paper), Laura Eaton, MD (1 shared paper) and Jeffrey Stuart Fromowitz, MD (1 shared paper).
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