Dr. Michael Erle Williams, MD
- Medicare services, 2024
- 31
- Medicare patients, 2024
- 40
- Part D claims, 2024
- 21
- MIPS score, 2024
- 86
- Hospital affiliations
- 1
- Practice address
- 300 Hillmont Avenue, Ventura, CA 93003
- Practice phone
- Call (805) 652-6075
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Williams' professional email, personal email and mobile number
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Dr. Michael Erle Williams is a general surgeon in Ventura, California
Dr. Williams practices at Ventura County Medical Center in Ventura, California, part of Ventura County Health Care Agency.
Dr. Williams' NPI, 1114089562, was assigned on December 14, 2006. Dr. Williams graduated from Keck School of Medicine of USC in 1965. Dr. Williams holds California license G12205.
- NPI
- 1114089562NPI Registry (opens in a new tab)
- NPI enumeration date
- December 14, 2006
- NPI status
- Active
- Practice phone
- (805) 652-6075
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 87
- Medical school graduation
- 1965
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Michael Erle Williams practices at Ventura County Medical Center in Ventura, California
Dr. Williams' primary practice is Ventura County Medical Center, at 300 Hillmont Avenue, Ventura, CA 93003 in Ventura County. The practice phone is (805) 652-6075.
- Ventura County Medical Center300 Hillmont Avenue, Ventura, CA 93003 · Ventura CountyPhone(805) 652-6075
Source: Dmand AI Affiliation Data
Dr. Michael Erle Williams is affiliated with 3 sites of care and 2 medical groups
Dr. Williams' primary practice is Ventura County Medical Center in Ventura, California, part of Ventura County Health Care Agency. The medical group on file is Ventura County Medical Center. Dmand AI also links Dr. Williams to 1 more community health center, 1 therapy and rehab clinic and 1 medical group, each named with a free account. Dr. Williams' employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Michael Erle Williams' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Williams practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ventura County Medical Center | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael Erle Williams is one of 2,926 general surgeons in California
Surgery is Dr. Williams' primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Williams is board certified in surgery by the American Board of Surgery. Dr. Williams is licensed in California.
Specialties and state licenses
- Surgery, CaliforniaPrimary
General surgeons near Dr. Williams
Counts of general surgeons 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. Michael Erle Williams billed Medicare for 31 services in 2024
CMS data shows 31 Medicare services from Dr. Williams across 1 procedure code in 2024, all of them office visits, for 40 Medicare patients. Medicare paid $825 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Williams' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 242024: 3129%
Dr. Williams compared with the California median for general surgeons, 2024
- Dr. Williams
- California median
- Medicare services
- 31vs 16681% below
- Medicare patients
- 40vs 12167% below
- Part D claims
- 12vs 3465% below
Medians across 2,606 general surgeons 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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michael Erle Williams treated 40 Medicare patients in 2024, average age 66
CMS counts 40 Medicare patients who saw Dr. Williams in 2024. The largest group is 65 to 74, with 16 patients. 60% of them have high cholesterol, and 58% have high blood pressure. Their average risk score is 1.04, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Williams' median patient age at 72, with 42% women.
Dr. Williams' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Williams' Medicare patients by sex, 2024
- Women1948%
- Men2153%
Chronic conditions among Dr. Williams' Medicare patients, 2024
- High cholesterol60%
- High blood pressure58%
- Arthritis40%
- Diabetes40%
- Mood disorders30%
- Depression28%
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 72
Patient panel by sex, all payers
- Women42%
- Men58%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Michael Erle Williams wrote 21 Medicare Part D claims in 2024
In 2024, Dr. Williams wrote 21 Medicare Part D claims. 95% of them were for generic drugs. CMS names the drug for 12 of them, across 1 drug with 11 or more claims each, at $77 in total drug cost. In 2023, CMS named 22 claims across 2 drugs.
Dr. Williams' Part D claims by kind of drug, 2024
- Generic20 claims95%
- Brand-name and other1 claims5%
Dr. Williams' 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. Williams' Part D claims, 2024
- Antibiotics90%19 of 21 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: 222024: 1245%
Drugs named by CMS: 1 in 2024, 2 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
Dr. Michael Erle Williams scored 86 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 86 out of 100 for Dr. Williams for performance year 2024, reported as part of a group.
Dr. Williams' MIPS scores, performance year 2024
- 86of 100Final score
- 64.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 72of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Michael Erle Williams received $213 in industry payments from 2016 to 2023
CMS Open Payments shows 7 general payments to Dr. Williams from 3 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Integra LifeSciences Corporation paid the most, $132.
General payments to Dr. Williams by program year, 2016 to 2023
Companies that paid Dr. Williams the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael Erle Williams has 1 award and honors on record
Dmand AI lists 1 award for Dr. Williams.
Awards and honors for Dr. Williams
- Undated
- ACS Fellow
Source: Dmand AI Professional Profile Data
Dr. Michael Erle Williams graduated from Keck School of Medicine of USC
Dr. Williams graduated from Keck School of Medicine of USC in 1965. Dr. Williams is a member of ACS.
- Medical school
- Board certified in surgery
Source: Dmand AI Professional Profile Data
Dr. Michael Erle Williams accepts plans from 6 insurance carriers
Dr. Williams is in network with 6 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- CMS Medicare
- Humana
Plan types Dr. Williams accepts, by number of carriers
- Medicare5
- PPO4
- HMO2
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Michael Erle Williams'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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 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 | Clinician Public Reporting: Overall MIPS Performance (CMS) (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. Michael Erle 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. Michael Erle Williams' NPI number?
Dr. Michael Erle Williams' NPI number is 1114089562. It was assigned on December 14, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael Erle Williams?
Dr. Michael Erle Williams is a general surgeon in Ventura, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Michael Erle Williams practice?
Dr. Williams practices at 300 Hillmont Avenue, Ventura, CA 93003. Dr. Williams' primary practice is Ventura County Medical Center in Ventura, California, part of Ventura County Health Care Agency. Dmand AI also links Dr. Williams to 1 community health center, 1 therapy and rehab clinic and 1 medical group.
What is Dr. Michael Erle Williams' office phone number?
The practice phone on file for Dr. Williams is (805) 652-6075.
What is Dr. Michael Erle Williams' medical license number?
Dr. Williams holds California license G12205.
Which hospitals is Dr. Michael Erle Williams affiliated with?
Dr. Williams practices at Ventura County Medical Center in Ventura, California.
What medical group is Dr. Michael Erle Williams part of?
Dr. Williams is linked to Ventura County Medical Center. Dmand AI links Dr. Williams to 1 more medical group.
Does Dr. Michael Erle Williams accept Medicare?
Yes. CMS data shows Dr. Williams billed Medicare for 31 services in 2024.
What is Dr. Michael Erle Williams' MIPS score?
Dr. Williams' MIPS final score for performance year 2024 is 86 out of 100, reported as part of a group.
How many Medicare patients does Dr. Michael Erle Williams see?
CMS counts 40 Medicare patients who saw Dr. Williams in 2024, with an average age of 66.
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Is Dr. Michael Erle Williams board certified?
Yes. Dr. Williams is board certified in surgery by the American Board of Surgery.
What services does Dr. Michael Erle Williams bill to Medicare?
In 2024, Dr. Williams' most billed Medicare services were office visit, new patient (99202).
Where did Dr. Michael Erle Williams go to medical school?
Dr. Williams graduated from Keck School of Medicine of USC in 1965.
What drugs does Dr. Michael Erle Williams prescribe most?
In 2024 Medicare Part D data, Dr. Williams' most prescribed drugs by claims were Sulfamethoxazole-Trimethoprim.
Has Dr. Michael Erle Williams received payments from drug or device companies?
CMS Open Payments shows $213 in general payments to Dr. Williams from 3 companies from 2016 to 2023. The largest total came from Integra LifeSciences Corporation.
How long has Dr. Michael Erle Williams been practicing?
Dr. Williams graduated from medical school in 1965, 61 years ago.
What insurance does Dr. Michael Erle Williams accept?
Dr. Williams is in network with 6 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
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