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Dr. William R. Alex, MD
NPI1558300681
- Medicare services, 2024
- 29
- Medicare patients, 2024
- 62
- Publications
- 2
- MIPS score, 2024
- 74
- Industry payments
- $8,838
- Practice address
- 4445 Magnolia Ave, Riverside, CA 92501
- Practice phone
- Call (951) 788-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Riverside Community Hospital
Riverside, California
Find Dr. Alex'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 R. Alex is a general surgeon in Riverside, California
Dr. Alex practices at Riverside Community Hospital in Riverside, California.
Dr. Alex's NPI, 1558300681, was assigned on June 5, 2006. Dr. Alex graduated from Georgetown University School Of Medicine in 1992. Dr. Alex holds California license G86010.
NPI and contact details
- NPI
- 1558300681NPI Registry (opens in a new tab)
- NPI enumeration date
- June 5, 2006
- NPI status
- Active
- Practice phone
- (951) 788-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. William R. Alex practices at Riverside Community Hospital in Riverside, California
Dr. Alex's primary practice is Riverside Community Hospital, at 4445 Magnolia Ave, Riverside, CA 92501 in Riverside County. The practice phone is (951) 788-3000.
- Riverside Community Hospital4445 Magnolia Ave, Riverside, CA 92501 · Riverside CountyPhone(951) 788-3000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. William R. Alex is affiliated with 3 sites of care and 1 medical group
Dr. Alex's primary practice is Riverside Community Hospital in Riverside, California. The medical group on file is Pacific Pulmonary Medical Group. Dmand AI also links Dr. Alex to 1 more physician office and 1 group practice or clinic, each named with a free account.
Riverside Community HospitalPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. William R. Alex's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Alex practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Riverside Community Hospital | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William R. Alex is one of 2,926 general surgeons in California
Surgery is Dr. Alex's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Alex is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Alex's licenses on file in 4 states: California, Texas, Maryland and Pennsylvania.
Specialties and state licenses
- Surgery, CaliforniaPrimary
- Texas license
- Maryland license
- Pennsylvania license
General surgeons near Dr. Alex
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. William R. Alex billed Medicare for 29 services in 2024
CMS data shows 29 Medicare services from Dr. Alex across 2 procedure codes in 2024, for 62 Medicare patients. Medicare paid $2,806 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 202429
Medicare patients62
Paid by Medicare$2,806
Procedure codes2
Dr. Alex's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1232024: 2976%
Dr. Alex compared with the California median for general surgeons, 2024
- Dr. Alex
- California median
- Medicare services
- 29vs 16683% below
- Medicare patients
- 62vs 12149% below
Medians across 2,606 general surgeons in California with Dmand AI profiles that report each measure.
Dr. Alex'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.
Need commercial claims for Dr. Alex?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Alex and other general surgeons in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William R. Alex treated 62 Medicare patients in 2024, average age 75
CMS counts 62 Medicare patients who saw Dr. Alex in 2024. The largest group is 65 to 74, with 23 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 50% are also on Medicaid. Their average risk score is 2.58, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Medicare patients, 202462
Average age75
Average risk score2.58
Also on Medicaid50%
Dr. Alex's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Alex's Medicare patients by sex, 2024
- Women2845%
- Men3455%
Chronic conditions among Dr. Alex's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis55%
- Chronic kidney disease45%
- Ischemic heart disease45%
- Mood disorders44%
- Diabetes39%
- Heart failure39%
Share of Medicare patients with each condition. A patient can have several.
Source: Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William R. Alex scored 74 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 74 out of 100 for Dr. Alex for performance year 2024, reported as part of a group.
Dr. Alex's MIPS scores, performance year 2024
- 74of 100Final score
- 52.1of 100Quality
- 40of 100Improvement Activities
- 66of 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. William R. Alex has 2 publications on record
Dmand AI links 2 papers to Dr. Alex. Dr. Alex's most frequent co-authors are Christopher Mario Pezzi, MD and Herbert Edward Auerbach, DO.
Papers2
Dr. Alex's most frequent co-authors
Recent publications by Dr. Alex
Abdominal PainAdenocarcinomaAmpulla of Vater
See who Dr. Alex researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Alex works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. William R. Alex received $8,838 in industry payments in 2017
CMS Open Payments shows 5 general payments to Dr. Alex from 1 drug or device company in 2017. Food and beverage make up the largest share, 73% of the total. Acute Innovations, LLC paid the most, $8,838.
General payments to Dr. Alex by kind, 2017 to 2017
$8.8Kin total
- Food and beverage$6,41073%
- Travel and lodging$2,42827%
Companies that paid Dr. Alex the most, 2017 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William R. Alex has 1 award and honors on record
Dmand AI lists 1 award for Dr. Alex.
Awards and honors for Dr. Alex
- Undated
- ACS Fellow
Source: Dmand AI Professional Profile Data
Dr. William R. Alex graduated from Georgetown University School Of Medicine
Dr. Alex graduated from Georgetown University School Of Medicine in 1992. Dr. Alex is a member of ACS.
- Medical school
- Board certified in surgery
Source: Dmand AI Professional Profile Data
Dr. William R. Alex accepts plans from 15 insurance carriers
Dr. Alex is in network with 15 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- +7 more carriersWith a free account
Plan types Dr. Alex accepts, by number of carriers
- PPO9
- Medicare8
- HMO6
- EPO4
- POS4
Source: Dmand AI Insurance Network Data
Sources for Dr. William R. Alex'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 | Medicare Physician & Other Practitioners - 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) |
| 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) |
| 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 R. Alex
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 R. Alex's NPI number?
Dr. William R. Alex's NPI number is 1558300681. It was assigned on June 5, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William R. Alex?
Dr. William R. Alex is a general surgeon in Riverside, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. William R. Alex practice?
Dr. Alex practices at 4445 Magnolia Ave, Riverside, CA 92501. Dr. Alex's primary practice is Riverside Community Hospital in Riverside, California. Dmand AI also links Dr. Alex to 1 physician office and 1 group practice or clinic.
What is Dr. William R. Alex's office phone number?
The practice phone on file for Dr. Alex is (951) 788-3000.
What is Dr. William R. Alex's medical license number?
Dr. Alex holds California license G86010, one of the licenses on file in 4 states.
Which states has Dr. William R. Alex been licensed in?
Dmand AI has state licenses on file for Dr. Alex in California (2001 to 2026), Texas (2019 to 2025), Maryland (1999 to 2000) and Pennsylvania (1993 to 2000).
What medical group is Dr. William R. Alex part of?
Dr. Alex is linked to Pacific Pulmonary Medical Group.
Does Dr. William R. Alex accept Medicare?
Yes. CMS data shows Dr. Alex billed Medicare for 29 services in 2024.
What is Dr. William R. Alex's MIPS score?
Dr. Alex's MIPS final score for performance year 2024 is 74 out of 100, reported as part of a group.
How many Medicare patients does Dr. William R. Alex see?
CMS counts 62 Medicare patients who saw Dr. Alex in 2024, with an average age of 75.
Show 8 more questionsShow fewer questions
Is Dr. William R. Alex board certified?
Yes. Dr. Alex is board certified in surgery by the American Board of Surgery.
What services does Dr. William R. Alex bill to Medicare?
In 2024, Dr. Alex's most billed Medicare services were emergency department visit (99284) and hospital inpatient care (99222).
Where did Dr. William R. Alex go to medical school?
Dr. Alex graduated from Georgetown University School Of Medicine in 1992.
Has Dr. William R. Alex received payments from drug or device companies?
CMS Open Payments shows $8,838 in general payments to Dr. Alex from 1 company from 2017 to 2017. The largest total came from Acute Innovations, LLC.
How long has Dr. William R. Alex been practicing?
Dr. Alex graduated from medical school in 1992, 34 years ago.
Does Dr. William R. Alex do research?
Dmand AI links 2 publications to Dr. Alex.
Who does Dr. William R. Alex publish with?
Dr. Alex's most frequent co-authors are Christopher Mario Pezzi, MD (2 shared papers) and Herbert Edward Auerbach, DO (1 shared paper).
What insurance does Dr. William R. Alex accept?
Dr. Alex is in network with 15 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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