AnaphylaxisHepatitis B VaccinesHerpesvirus 3, Human
Dr. William Towner, MD
NPI1538230412PAC ID0143352773
- Medicare services, 2021
- 13
- Part D claims, 2024
- 1,291
- Publications
- 17
- Clinical trials
- 6
- Industry payments
- $1,217
- Practice address
- 4760 W Sunset Blvd, Los Angeles, CA 90027
- Practice phone
- Call (323) 783-4011
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Southern California Permanente Medical Group
Los Angeles, California
Find Dr. Towner'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 Towner is an internist in Los Angeles, California
Dr. Towner practices at Southern California Permanente Medical Group in Los Angeles, California.
Dr. Towner's NPI, 1538230412, was assigned on November 13, 2006. Dr. Towner graduated from Keck School of Medicine of USC in 1993. Dr. Towner holds California license G80011.
NPI and contact details
- NPI
- 1538230412NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0143352773
- NPI enumeration date
- November 13, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (323) 783-4011
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 59
- Medical school graduation
- 1993
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William Towner practices at Southern California Permanente Medical Group in Los Angeles, California
Dr. Towner's primary practice is Southern California Permanente Medical Group, at 4760 W Sunset Blvd, Los Angeles, CA 90027 in Los Angeles County. The practice phone is (323) 783-4011.
- Southern California Permanente Medical Group4760 W Sunset Blvd, Los Angeles, CA 90027 · Los Angeles CountyPhone(323) 783-4011
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. William Towner is affiliated with 2 sites of care and 1 medical group
Dr. Towner's primary practice is Southern California Permanente Medical Group in Los Angeles, California. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Towner to 1 more group practice or clinic, named with a free account.
Southern California Permanente Medical GroupPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. William Towner's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Towner practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Southern California Permanente Medical Group | 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. William Towner is one of 16,751 internists in California
Internal medicine is Dr. Towner's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Towner is board certified in internal medicine by the American Board of Internal Medicine. Dr. Towner is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists hiv/aids among the conditions Dr. Towner treats.
Internists near Dr. Towner
Counts of internists 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 Towner billed Medicare for 13 services in 2021
CMS data shows 13 Medicare services from Dr. Towner across 1 procedure code in 2021. Medicare paid $249 for them. Every service was in an office.
Medicare services, 202113
Paid by Medicare$249
Procedure codes1
Dr. Towner compared with the California median for internists, 2021
- Dr. Towner
- California median
- Medicare services
- 13vs 36196% below
- Part D claims
- 884vs 4212.1 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Towner's most billed Medicare procedure codes, 2021
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Towner?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Towner and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William Towner's patients have a median age of 58
Across all payers, Dmand AI patient panel data puts Dr. Towner's median patient age at 58, with 56% women.
Dr. Towner's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women56%
- Men43%
Source: Dmand AI Patient Panel Data
Dr. William Towner wrote 1,291 Medicare Part D claims in 2024
In 2024, Dr. Towner wrote 1,291 Medicare Part D claims for 122 patients. 84% of them were for generic drugs. CMS names the drug for 884 of them, across 41 drugs with 11 or more claims each, at $126,896 in total drug cost. In 2023, CMS named 863 claims across 38 drugs.
Part D claims, 20241,291
Drugs named by CMS41
Total drug cost$126,896
Part D patients122
Dr. Towner's Part D claims by kind of drug, 2024
- Generic1,084 claims84%
- Brand-name190 claims15%
- Other17 claims1%
Dr. Towner'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. Towner's Part D claims, 2024
- Opioids1%19 of 1,291 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: 8632024: 8842%
Drugs named by CMS: 41 in 2024, 38 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 Towner takes part in Medicare
Dr. Towner 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 Towner has 17 publications on record
Dmand AI links 17 papers to Dr. Towner, published from 2013 to 2023. 2015 was the busiest year, with 4. The most frequent topics are HIV Infections, Drug Therapy, Combination and Viral Load. Dr. Towner's most frequent co-authors are Michael Alan Horberg, MD, Edwin Dejesus, MD and Michael Silverberg, MD.
Papers17
Years published2013 to 2023
Dr. Towner's papers by year, 2013 to 2023
Topics Dr. Towner writes about most
- HIV Infections
- Drug Therapy, Combination
- Viral Load
Dr. Towner's most frequent co-authors
- Michael Alan Horberg, MD4 shared papers
- Edwin Dejesus, MD3 shared papers
- Michael Silverberg, MD3 shared papers
Recent publications by Dr. Towner
See who Dr. Towner researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Towner works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. William Towner has worked on 6 clinical trials
Dmand AI links Dr. Towner to 6 clinical trials, 5 of them phase 3 studies. Conditions studied include Hepatitis C, HIV Infections and Flaviviridae Infections. Bristol-Myers Squibb sponsors the most, 2.
Clinical trials with Dr. Towner by phase
- NonePhase 1: no trials
- 1Phase 2: 1 trial
- 5Phase 3: 5 trials
- NonePhase 4: no trials
Conditions in Dr. Towner's trials
- Hepatitis C
- HIV Infections
- Flaviviridae Infections
- Lentivirus Infections
- Acquired Immunodeficiency Syndrome
Investigators on the most trials with Dr. Towner
- Edwin Dejesus, MD2 shared trials
- Michael John Kozal, MD2 shared trials
- Jacob Lalezari, MD2 shared trials
Recent clinical trials with Dr. Towner
Ibalizumab Plus Optimized Background Regimen in Treatment-Experienced Patients With Multi-Drug Resistant HIV-1 (opens in a new tab)
CompletedPhase 3
Acquired Immunodeficiency SyndromeSlow Virus DiseasesIbalizumabOptimized Background Regimen
Ibalizumab Plus Optimized Background Regimen in Patient With Multi-Drug Resistant HIV (opens in a new tab)
CompletedPhase 3
IbalizumabOptimized Background Regimen (OBR)
Phase III Hallmark DUAL: ASV+DCV (Nulls/Partials, Intolerants/Ineligibles. Naives) (opens in a new tab)
CompletedPhase 3
Hepatitis CFlaviviridae InfectionsAsunaprevir (ASV)Daclatasvir (DCV)Pegylated-interferon alfa 2a (PegIFN)
Hepatitis CFlaviviridae InfectionsDaclatasvirRibavirinPEG-Interferon alfa 2a
HIV InfectionsLentivirus Infectionsibalizumab 2000mg Q4Weeksibalizumab 800mg Q2Weeks
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. William Towner received $1,217 in industry payments from 2017 to 2025
CMS Open Payments shows 13 general payments to Dr. Towner from 4 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 68% of the total. Merck Sharp & Dohme Corporation paid the most, $666. It also lists 7 research payments totaling $9,922 from 2024 to 2025.
General payments to Dr. Towner by program year, 2017 to 2025
General payments to Dr. Towner by kind, 2017 to 2025
$1.2Kin total
- Food and beverage$83368%
- Travel and lodging$36330%
- Gifts$202%
Companies that paid Dr. Towner the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William Towner has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Towner, most recently NCQA DRP in 2015.
Awards and honors for Dr. Towner
- 2015
- NCQA DRP
- 2009
- Bridges to Excellence
Source: Dmand AI Professional Profile Data
Dr. William Towner graduated from Keck School of Medicine of USC
Dr. Towner graduated from Keck School of Medicine of USC in 1993. Dr. Towner is a member of ACP and IDSA.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. William Towner accepts plans from 1 insurance carrier
Dr. Towner is in network with 1 carrier, including Kaiser Permanente. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
Plan types Dr. Towner accepts, by number of carriers
- EPO1
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. William Towner'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 services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| 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) |
| 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 |
| 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. William Towner
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 Towner's NPI number?
Dr. William Towner's NPI number is 1538230412. It was assigned on November 13, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William Towner?
Dr. William Towner is an internist in Los Angeles, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. William Towner practice?
Dr. Towner practices at 4760 W Sunset Blvd, Los Angeles, CA 90027. Dr. Towner's primary practice is Southern California Permanente Medical Group in Los Angeles, California. Dmand AI also links Dr. Towner to 1 group practice or clinic.
What is Dr. William Towner's office phone number?
The practice phone on file for Dr. Towner is (323) 783-4011.
What is Dr. William Towner's medical license number?
Dr. Towner holds California license G80011.
What medical group is Dr. William Towner part of?
Dr. Towner is linked to Southern California Permanente Medical Group.
Does Dr. William Towner accept Medicare?
Yes. CMS data shows Dr. Towner billed Medicare for 13 services in 2021, and Dr. Towner accepts Medicare assignment.
Is Dr. William Towner board certified?
Yes. Dr. Towner is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. William Towner bill to Medicare?
In 2021, Dr. Towner's most billed Medicare services were medical service (0001A).
Where did Dr. William Towner go to medical school?
Dr. Towner graduated from Keck School of Medicine of USC in 1993.
Show 6 more questionsShow fewer questions
What drugs does Dr. William Towner prescribe most?
In 2024 Medicare Part D data, Dr. Towner's most prescribed drugs by claims were Atorvastatin Calcium, Acyclovir and Zolpidem Tartrate.
Has Dr. William Towner received payments from drug or device companies?
CMS Open Payments shows $1,217 in general payments to Dr. Towner from 4 companies from 2017 to 2025. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. William Towner been practicing?
Dr. Towner graduated from medical school in 1993, 33 years ago.
Does Dr. William Towner do research?
Dmand AI links 17 publications to Dr. Towner, published from 2013 to 2023. Dr. Towner has worked on 6 clinical trials.
Who does Dr. William Towner publish with?
Dr. Towner's most frequent co-authors are Michael Alan Horberg, MD (4 shared papers), Edwin Dejesus, MD (3 shared papers) and Michael Silverberg, MD (3 shared papers).
What insurance does Dr. William Towner accept?
Dr. Towner is in network with 1 carrier, including Kaiser Permanente. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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