Dr. Neil Patrick Williams, MD

  • West Hills, CA
  • Internist
NPI1174141253PAC ID2668815150
Medicare services, 2024
215
Medicare patients, 2024
215
Part D claims, 2024
94
Publications
1
Hospital affiliations
4
Practice address
7300 Medical Center Dr, West Hills, CA 91307
Practice phone
Call (818) 676-4000
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

UCLA West Valley Medical Center

Hospital · West Hills, California

See all 8 affiliations

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Dr. Neil Patrick Williams is an internist in West Hills, California

Dr. Williams practices at UCLA West Valley Medical Center in West Hills, California, part of University of California Health.

Dr. Williams' NPI, 1174141253, was assigned on July 6, 2020. Dr. Williams graduated from St. George's University School of Medicine in 2020. Dr. Williams holds California license D9394722.

NPI and contact details
Medicare PAC ID
2668815150
NPI enumeration date
July 6, 2020
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(818) 676-4000
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
32
Medical school graduation
2020

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

Dr. Neil Patrick Williams practices at UCLA West Valley Medical Center in West Hills, California

Dr. Williams' primary practice is UCLA West Valley Medical Center, at 7300 Medical Center Dr, West Hills, CA 91307 in Los Angeles County. The practice phone is (818) 676-4000.

Source: Dmand AI Affiliation Data

Dr. Neil Patrick Williams is affiliated with 4 sites of care and 4 medical groups

Dr. Williams' primary practice is UCLA West Valley Medical Center in West Hills, California, part of University of California Health. Dr. Williams is also affiliated with Ronald Reagan UCLA Medical Center. The medical group on file is UCLA Medical Group. Dmand AI also links Dr. Williams to 2 more hospitals and 3 medical groups, each named with a free account.

See all 8 affiliations for Dr. Williams

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

Dmand AI tracks the EHR system at Dr. Neil Patrick Williams' practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Williams practices, 4 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
UCLA West Valley Medical CenterAvailable with a free account
+3 more sites and 3 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Neil Patrick Williams is one of 16,751 internists in California

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

Specialties and state licenses

  • Internal medicine, CaliforniaPrimaryLicense D9394722 · 2024 to 2026 · taxonomy 207R00000X
  • New Jersey license2023 to 2025

Clinical focus

Dmand AI lists loss of balance among the conditions Dr. Williams treats.

Internists near Dr. Williams

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. Neil Patrick Williams billed Medicare for 215 services in 2024

CMS data shows 215 Medicare services from Dr. Williams across 2 procedure codes in 2024, for 215 Medicare patients. Medicare paid $27,335 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024215
Medicare patients215
Paid by Medicare$27,335
Procedure codes2

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

  • Dr. Williams
  • California median
Medicare services
215vs 36140% below
Medicare patients
215vs 15142% above

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

Dr. Williams' 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. Williams

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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Williams and other internists in California.

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

Dr. Neil Patrick Williams treated 215 Medicare patients in 2024, average age 75

CMS counts 215 Medicare patients who saw Dr. Williams in 2024. The largest group is 65 to 74, with 67 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 45% are also on Medicaid. Their average risk score is 2.82, 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. Williams' median patient age at 62, with 50% women.

Medicare patients, 2024215
Average age75
Average risk score2.82
Also on Medicaid45%

Dr. Williams' Medicare patients by age, 2024

Dr. Williams' Medicare patients by sex, 2024

  • Women12458%
  • Men9142%

Chronic conditions among Dr. Williams' Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Diabetes65%
  4. Chronic kidney disease52%
  5. Arthritis51%
  6. Ischemic heart disease51%
  7. Heart failure48%
  8. Mood disorders43%

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

Dr. Williams' 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

  • Women50%
  • Men49%

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

Dr. Neil Patrick Williams wrote 94 Medicare Part D claims in 2024

In 2024, Dr. Williams wrote 94 Medicare Part D claims. 76% of them were for generic drugs.

Part D claims, 202494

Dr. Williams' Part D claims by kind of drug, 2024

  • Generic71 claims76%
  • Brand-name23 claims24%

Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data

How Dr. Neil Patrick Williams takes part in Medicare

Dr. Williams 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. Neil Patrick Williams has 1 publication on record

Dmand AI links 1 paper to Dr. Williams. Dr. Williams' most frequent co-authors are William Farrer, MD and Fisayo Kayode-Ajala, MD.

Papers1

Dr. Williams' most frequent co-authors

Recent publications by Dr. Williams

See all 1 publications and co-authors

See who Dr. Williams researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Williams works with, so you can find a warm path to the right internists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Neil Patrick Williams received $33 in industry payments from 2022 to 2024

CMS Open Payments shows 2 general payments to Dr. Williams from 2 drug and device companies from 2022 to 2024. Food and beverage make up the largest share, 100% of the total. Pfizer Inc. paid the most, $18.

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

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

Share is of all general payments to this clinician.

See all payments to Dr. Williams

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

Dr. Neil Patrick Williams graduated from St. George's University School of Medicine

Dr. Williams graduated from St. George's University School of Medicine in 2020.

  1. Medical schoolSt. George's University School of Medicine
  2. Board certified in internal medicineAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Neil Patrick Williams accepts plans from 4 insurance carriers

Dr. Williams is in network with 4 carriers, including Cigna, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.

  • Cigna
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • CMS Medicare

Plan types Dr. Williams accepts, by number of carriers

  1. Medicare4
  2. PPO3
  3. HMO1

Source: Dmand AI Insurance Network Data

Sources for Dr. Neil Patrick Williams'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)
Part D prescribingMedicare Part D Prescribers - 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)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
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. Neil Patrick Williams

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. Neil Patrick Williams' NPI number?

Dr. Neil Patrick Williams' NPI number is 1174141253. It was assigned on July 6, 2020, and it is active in the NPI Registry.

What kind of doctor is Dr. Neil Patrick Williams?

Dr. Neil Patrick Williams is an internist in West Hills, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).

Where does Dr. Neil Patrick Williams practice?

Dr. Williams practices at 7300 Medical Center Dr, West Hills, CA 91307. Dr. Williams' primary practice is UCLA West Valley Medical Center in West Hills, California, part of University of California Health. Dmand AI also links Dr. Williams to 2 hospitals and 3 medical groups.

What is Dr. Neil Patrick Williams' office phone number?

The practice phone on file for Dr. Williams is (818) 676-4000.

What is Dr. Neil Patrick Williams' medical license number?

Dr. Williams holds California license D9394722, one of the licenses on file in 2 states.

Which states has Dr. Neil Patrick Williams been licensed in?

Dmand AI has state licenses on file for Dr. Williams in California (2024 to 2026) and New Jersey (2023 to 2025).

Which hospitals is Dr. Neil Patrick Williams affiliated with?

Dr. Williams practices at UCLA West Valley Medical Center in West Hills, California. Dr. Williams is also affiliated with Ronald Reagan UCLA Medical Center. Dmand AI links Dr. Williams to 2 more hospitals.

What medical group is Dr. Neil Patrick Williams part of?

Dr. Williams is linked to UCLA Medical Group. Dmand AI links Dr. Williams to 3 more medical groups.

Does Dr. Neil Patrick Williams accept Medicare?

Yes. CMS data shows Dr. Williams billed Medicare for 215 services in 2024, and Dr. Williams accepts Medicare assignment.

How many Medicare patients does Dr. Neil Patrick Williams see?

CMS counts 215 Medicare patients who saw Dr. Williams in 2024, with an average age of 75.

Show 8 more questionsShow fewer questions

Is Dr. Neil Patrick Williams board certified?

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

What services does Dr. Neil Patrick Williams bill to Medicare?

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

Where did Dr. Neil Patrick Williams go to medical school?

Dr. Williams graduated from St. George's University School of Medicine in 2020.

Has Dr. Neil Patrick Williams received payments from drug or device companies?

CMS Open Payments shows $33 in general payments to Dr. Williams from 2 companies from 2022 to 2024. The largest total came from Pfizer Inc.

How long has Dr. Neil Patrick Williams been practicing?

Dr. Williams graduated from medical school in 2020, 6 years ago.

Does Dr. Neil Patrick Williams do research?

Dmand AI links 1 publication to Dr. Williams.

Who does Dr. Neil Patrick Williams publish with?

Dr. Williams' most frequent co-authors are William Farrer, MD (1 shared paper) and Fisayo Kayode-Ajala, MD (1 shared paper).

What insurance does Dr. Neil Patrick Williams accept?

Dr. Williams is in network with 4 carriers, including Cigna, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.

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