Dr. William Kenneth Winter, MD

  • Los Angeles, CA
  • Internist
NPI1437680725PAC ID2365864733
Medicare services, 2024
133
Medicare patients, 2024
134
MIPS score, 2024
88
Hospital affiliations
2
Industry payments
$265
Practice address
757 Westwood Plaza, Los Angeles, CA 90095
Practice phone
Call (310) 825-6301
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Ronald Reagan UCLA Medical Center

Hospital · Los Angeles, California

See all 5 affiliations

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Dr. William Kenneth Winter is an internist in Los Angeles, California

Dr. Winter practices at Ronald Reagan UCLA Medical Center in Los Angeles, California, part of University of California Health.

Dr. Winter's NPI, 1437680725, was assigned on March 27, 2017. Dr. Winter graduated from Tufts University School Of Medicine in 2017. Dr. Winter holds Florida license ME163163.

NPI and contact details
Medicare PAC ID
2365864733
NPI enumeration date
March 27, 2017
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(310) 825-6301
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
35
Medical school graduation
2017

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. William Kenneth Winter practices at Ronald Reagan UCLA Medical Center in Los Angeles, California

Dr. Winter's primary practice is Ronald Reagan UCLA Medical Center, at 757 Westwood Plaza, Los Angeles, CA 90095 in Los Angeles County. The practice phone is (310) 825-6301.

Source: Dmand AI Affiliation Data

Dr. William Kenneth Winter is affiliated with 3 sites of care and 2 medical groups

Dr. Winter's primary practice is Ronald Reagan UCLA Medical Center in Los Angeles, California, part of University of California Health. Dr. Winter is also affiliated with UCLA Santa Monica Medical Center. The medical group on file is UCLA Medical Group. Dmand AI also links Dr. Winter to 1 more group practice or clinic and 1 medical group, each named with a free account.

See all 5 affiliations for Dr. Winter

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. William Kenneth Winter's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Winter practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Ronald Reagan UCLA Medical CenterAvailable with a free account
+2 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. William Kenneth Winter is one of 16,751 internists in California

Internal medicine is Dr. Winter's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Winter is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Winter's licenses on file in 2 states: Florida and California.

Specialties and state licenses

  • Internal medicine, FloridaPrimaryLicense ME163163 · taxonomy 207R00000X
  • California license2023 to 2027

Internists near Dr. Winter

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 Kenneth Winter billed Medicare for 133 services in 2024

CMS data shows 133 Medicare services from Dr. Winter across 2 procedure codes in 2024, for 134 Medicare patients. Medicare paid $17,775 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024133
Medicare patients134
Paid by Medicare$17,775
Procedure codes2

Dr. Winter's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 932024: 13343%

Dr. Winter compared with the California median for internists, 2024

  • Dr. Winter
  • California median
Medicare services
133vs 36163% below
Medicare patients
134vs 15111% below

Medians across 15,815 internists in California with Dmand AI profiles that report each measure.

Dr. Winter's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Winter

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. William Kenneth Winter treated 134 Medicare patients in 2024, average age 72

CMS counts 134 Medicare patients who saw Dr. Winter in 2024. The largest group is 65 to 74, with 49 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 63% are also on Medicaid. Their average risk score is 3.92, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Winter's median patient age at 62, with 49% women.

Medicare patients, 2024134
Average age72
Average risk score3.92
Also on Medicaid63%

Dr. Winter's Medicare patients by age, 2024

Dr. Winter's Medicare patients by sex, 2024

  • Women7556%
  • Men5944%

Chronic conditions among Dr. Winter's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis59%
  4. Mood disorders59%
  5. Diabetes58%
  6. Ischemic heart disease58%
  7. Anxiety56%
  8. Chronic kidney disease56%

Share of Medicare patients with each condition. A patient can have several.

Dr. Winter's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 62

Patient panel by sex, all payers

  • Women49%
  • Men50%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. William Kenneth Winter scored 88 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 88 out of 100 for Dr. Winter for performance year 2024, reported as part of a group. Dr. Winter accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Dr. Winter's MIPS scores, performance year 2024

  • 88of 100Final score
  • 78.8of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 71of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

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Dr. William Kenneth Winter received $265 in industry payments from 2022 to 2024

CMS Open Payments shows 3 general payments to Dr. Winter from 2 drug and device companies from 2022 to 2024. Food and beverage make up the largest share, 100% of the total. Harmony Biosciences LLC paid the most, $140.

General payments to Dr. Winter by program year, 2022 to 2024

Companies that paid Dr. Winter the most, 2022 to 2024

Share is of all general payments to this clinician.

See all payments to Dr. Winter

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. William Kenneth Winter graduated from Tufts University School Of Medicine

Dr. Winter graduated from Tufts University School Of Medicine in 2017.

  1. Medical schoolTufts University School Of Medicine
  2. Board certified in internal medicineAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. William Kenneth Winter accepts plans from 11 insurance carriers

Dr. Winter is in network with 11 carriers, including Elevance, United Healthcare and Blue Cross Blue Shield of Michigan. HMO plans come from the most carriers, 6. Check the plan with the practice before a visit.

  • Elevance
  • United Healthcare
  • Blue Cross Blue Shield of Michigan
  • Molina
  • Aetna
  • Alliant Health Plans
  • Aspirus Health Plan
  • Blue Cross and Blue Shield of Kansas City
  • +3 more carriersWith a free account

Plan types Dr. Winter accepts, by number of carriers

  1. HMO6
  2. PPO5
  3. Medicare4
  4. POS3
  5. EPO2

Source: Dmand AI Insurance Network Data

Sources for Dr. William Kenneth Winter's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. William Kenneth Winter

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 Kenneth Winter's NPI number?

Dr. William Kenneth Winter's NPI number is 1437680725. It was assigned on March 27, 2017, and it is active in the NPI Registry.

What kind of doctor is Dr. William Kenneth Winter?

Dr. William Kenneth Winter 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 Kenneth Winter practice?

Dr. Winter practices at 757 Westwood Plaza, Los Angeles, CA 90095. Dr. Winter's primary practice is Ronald Reagan UCLA Medical Center in Los Angeles, California, part of University of California Health. Dmand AI also links Dr. Winter to 1 group practice or clinic and 1 medical group.

What is Dr. William Kenneth Winter's office phone number?

The practice phone on file for Dr. Winter is (310) 825-6301.

What is Dr. William Kenneth Winter's medical license number?

Dr. Winter holds Florida license ME163163, one of the licenses on file in 2 states.

Which states has Dr. William Kenneth Winter been licensed in?

Dmand AI has state licenses on file for Dr. Winter in Florida and California (2023 to 2027).

Which hospitals is Dr. William Kenneth Winter affiliated with?

Dr. Winter practices at Ronald Reagan UCLA Medical Center in Los Angeles, California. Dr. Winter is also affiliated with UCLA Santa Monica Medical Center.

What medical group is Dr. William Kenneth Winter part of?

Dr. Winter is linked to UCLA Medical Group. Dmand AI links Dr. Winter to 1 more medical group.

Does Dr. William Kenneth Winter accept Medicare?

Yes. CMS data shows Dr. Winter billed Medicare for 133 services in 2024, and Dr. Winter accepts Medicare assignment.

What is Dr. William Kenneth Winter's MIPS score?

Dr. Winter's MIPS final score for performance year 2024 is 88 out of 100, reported as part of a group.

Show 7 more questionsShow fewer questions

How many Medicare patients does Dr. William Kenneth Winter see?

CMS counts 134 Medicare patients who saw Dr. Winter in 2024, with an average age of 72.

Is Dr. William Kenneth Winter board certified?

Yes. Dr. Winter is board certified in internal medicine by the American Board of Internal Medicine.

What services does Dr. William Kenneth Winter bill to Medicare?

In 2024, Dr. Winter's most billed Medicare services were hospital inpatient care (99223) and hospital inpatient care (99222).

Where did Dr. William Kenneth Winter go to medical school?

Dr. Winter graduated from Tufts University School Of Medicine in 2017.

Has Dr. William Kenneth Winter received payments from drug or device companies?

CMS Open Payments shows $265 in general payments to Dr. Winter from 2 companies from 2022 to 2024. The largest total came from Harmony Biosciences LLC.

How long has Dr. William Kenneth Winter been practicing?

Dr. Winter graduated from medical school in 2017, 9 years ago.

What insurance does Dr. William Kenneth Winter accept?

Dr. Winter is in network with 11 carriers, including Elevance, United Healthcare and Blue Cross Blue Shield of Michigan. HMO plans come from the most carriers, 6. Check the plan with the practice before a visit.

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