Cell PhoneCystoscopesCystoscopy
Dr. William Sohn, MD
NPI1467781583PAC ID7810151826
- Medicare patients, 2024
- 11
- Part D claims, 2024
- 606
- Publications
- 11
- Hospital affiliations
- 1
- Industry payments
- $2,442
- Practice address
- 9965 Sierra Ave, Fontana, CA 92335
- Practice phone
- Call (909) 427-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kaiser Permanente - Fontana Medical Center
Fontana, California
Find Dr. Sohn'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. William Sohn is a urologist in Fontana, California
Dr. Sohn practices at Kaiser Permanente - Fontana Medical Center in Fontana, California.
Dr. Sohn's NPI, 1467781583, was assigned on December 19, 2009. Dr. Sohn graduated from New York Medical College in 2007. Dr. Sohn holds California license A106027.
NPI and contact details
- NPI
- 1467781583NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7810151826
- NPI enumeration date
- December 19, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (909) 427-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William Sohn practices at Kaiser Permanente - Fontana Medical Center in Fontana, California
Dr. Sohn's primary practice is Kaiser Permanente - Fontana Medical Center, at 9965 Sierra Ave, Fontana, CA 92335 in San Bernardino County. The practice phone is (909) 427-5000.
- Kaiser Permanente - Fontana Medical Center9965 Sierra Ave, Fontana, CA 92335 · San Bernardino CountyPhone(909) 427-5000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. William Sohn is affiliated with 2 sites of care and 2 medical groups
Dr. Sohn's primary practice is Kaiser Permanente - Fontana Medical Center in Fontana, California. Dr. Sohn is also affiliated with Fontana Medical Center. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Sohn to 1 more medical group, named with a free account.
Kaiser Permanente - Fontana Medical CenterPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William Sohn's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sohn practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente - Fontana Medical Center | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William Sohn is one of 1,395 urologists in California
Urology is Dr. Sohn's primary specialty in the NPI Registry, under taxonomy code 208800000X. Dmand AI has Dr. Sohn's licenses on file in 2 states: California and Tennessee.
Specialties and state licenses
- Urology, CaliforniaPrimary
- Tennessee license
Clinical focus
Dmand AI lists enlarged prostate and urinary endoscopy among the conditions Dr. Sohn treats.
Urologists near Dr. Sohn
Counts of urologists 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. William Sohn treated 11 Medicare patients in 2024, average age 67
CMS counts 11 Medicare patients who saw Dr. Sohn in 2024. The largest group is 85 and over, with 0 patients. Their average risk score is 0.78, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Sohn's median patient age at 68, with 27% women.
Medicare patients, 202411
Average age67
Average risk score0.78
Dr. Sohn's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Sohn's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women27%
- Men73%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William Sohn wrote 606 Medicare Part D claims in 2024
In 2024, Dr. Sohn wrote 606 Medicare Part D claims for 193 patients. 96% of them were for generic drugs. CMS names the drug for 556 of them, across 10 drugs with 11 or more claims each, at $8,614 in total drug cost. In 2023, CMS named 570 claims across 8 drugs.
Part D claims, 2024606
Drugs named by CMS10
Total drug cost$8,614
Part D patients193
Dr. Sohn's Part D claims by kind of drug, 2024
- Generic582 claims96%
- Brand-name and other24 claims4%
Dr. Sohn'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. Sohn's Part D claims, 2024
- Opioids3%19 of 606 claims
- Antibiotics13%80 of 606 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: 5702024: 5562%
Drugs named by CMS: 10 in 2024, 8 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
How Dr. William Sohn takes part in Medicare
Dr. Sohn accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. William Sohn has 11 publications on record
Dmand AI links 11 papers to Dr. Sohn, published from 2011 to 2017. 2016 was the busiest year, with 3. The most frequent topics are Laparoscopy, Prostatic Neoplasms and Cell Phone. Dr. Sohn has published most often in J Endourol. Dr. Sohn's most frequent co-authors are Daniel A. Barocas, MD, Ralph V. Clayman, MD and Thomas E. Ahlering, MD.
Papers11
Years published2011 to 2017
Dr. Sohn's papers by year, 2011 to 2017
Topics Dr. Sohn writes about most
- Laparoscopy
- Prostatic Neoplasms
- Cell Phone
- Comparative Effectiveness Research
- Cystoscopes
- Cystoscopy
- Robotics
- Urinary Bladder Neoplasms
Dr. Sohn's most frequent co-authors
- Daniel A. Barocas, MD3 shared papers
- Ralph V. Clayman, MD3 shared papers
- Thomas E. Ahlering, MD1 shared paper
Recent publications by Dr. Sohn
Carcinoma, Renal CellCause of DeathDiagnostic Imaging
Cell PhoneColorCystoscopes
See who Dr. Sohn researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Sohn works with, so you can find a warm path to the right urologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. William Sohn received $2,442 in industry payments from 2016 to 2025
CMS Open Payments shows 26 general payments to Dr. Sohn from 11 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 74% of the total. PROCEPT BioRobotics Corporation paid the most, $850.
General payments to Dr. Sohn by program year, 2016 to 2025
General payments to Dr. Sohn by kind, 2016 to 2025
$2.4Kin total
- Food and beverage$1,81274%
- Travel and lodging$48120%
- Consulting fees$1506%
Companies that paid Dr. Sohn 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. William Sohn graduated from New York Medical College
Dr. Sohn graduated from New York Medical College in 2007.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William Sohn'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 DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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 |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. William Sohn
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. William Sohn's NPI number?
Dr. William Sohn's NPI number is 1467781583. It was assigned on December 19, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. William Sohn?
Dr. William Sohn is a urologist in Fontana, California. The primary specialty in the NPI Registry is Urology Physician (taxonomy code 208800000X).
Where does Dr. William Sohn practice?
Dr. Sohn practices at 9965 Sierra Ave, Fontana, CA 92335. Dr. Sohn's primary practice is Kaiser Permanente - Fontana Medical Center in Fontana, California. Dmand AI also links Dr. Sohn to 1 medical group.
What is Dr. William Sohn's office phone number?
The practice phone on file for Dr. Sohn is (909) 427-5000.
What is Dr. William Sohn's medical license number?
Dr. Sohn holds California license A106027, one of the licenses on file in 2 states.
Which states has Dr. William Sohn been licensed in?
Dmand AI has state licenses on file for Dr. Sohn in California and Tennessee.
Which hospitals is Dr. William Sohn affiliated with?
Dr. Sohn is affiliated with Fontana Medical Center.
What medical group is Dr. William Sohn part of?
Dr. Sohn is linked to Southern California Permanente Medical Group. Dmand AI links Dr. Sohn to 1 more medical group.
Does Dr. William Sohn accept Medicare?
Yes. CMS lists Dr. Sohn as accepting Medicare assignment.
How many Medicare patients does Dr. William Sohn see?
CMS counts 11 Medicare patients who saw Dr. Sohn in 2024, with an average age of 67.
Show 6 more questionsShow fewer questions
Where did Dr. William Sohn go to medical school?
Dr. Sohn graduated from New York Medical College in 2007.
What drugs does Dr. William Sohn prescribe most?
In 2024 Medicare Part D data, Dr. Sohn's most prescribed drugs by claims were Finasteride, Tamsulosin HCl and Solifenacin Succinate.
Has Dr. William Sohn received payments from drug or device companies?
CMS Open Payments shows $2,442 in general payments to Dr. Sohn from 11 companies from 2016 to 2025. The largest total came from PROCEPT BioRobotics Corporation.
How long has Dr. William Sohn been practicing?
Dr. Sohn graduated from medical school in 2007, 19 years ago.
Does Dr. William Sohn do research?
Dmand AI links 11 publications to Dr. Sohn, published from 2011 to 2017.
Who does Dr. William Sohn publish with?
Dr. Sohn's most frequent co-authors are Daniel A. Barocas, MD (3 shared papers), Ralph V. Clayman, MD (3 shared papers) and Thomas E. Ahlering, MD (1 shared paper).
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