WILLIAM R ALEX MD
NPI 1558300681
Surgery in Riverside, CA

Q: What is William Alex's NPI number?

The NPI number for William Alex is 1558300681. It was assigned to this individual provider in the NPPES registry on June 5, 2006.

Q: What is William Alex's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Q: When was this NPI record last updated?

The NPPES record for William Alex was last updated on March 19, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since June 05, 2006PECOS Enrolled

73.04/100

CMS Quality Rating

4000 14TH ST, STE 306, RIVERSIDE, CA 92501(951) 682-2036(951) 682-2942 Get Directions Write a Review

NPPES record last updated: March 19, 2010. Verified against the NPPES registry weekly; last sync: October 04, 2026.

On this page

About William R Alex Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLIAM R ALEX MD (NPI 1558300681) is an individual surgery provider in Riverside, California, licensed in California (G86010) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1558300681

Entity TypeIndividualMale

Primary Taxonomy208600000X

Provider Legal NameWILLIAM R ALEXCredential: MD

Location Address4000 14TH ST, STE 306Riverside, CA 92501-4083

Mailing Address4000 14th St, Ste 306Riverside, CA 92501-4083 · (951) 682-2036 · Fax (951) 682-2942

Phone(951) 682-2036

Fax(951) 682-2942

Sole ProprietorNo

Enumeration DateJune 5, 2006

Last NPPES UpdateMarch 19, 2010

✔ NPI 1558300681 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians

Taxonomy Code208600000X

License✔ Licensed in CA · G86010

Definition

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

Also ListedSurgery · Surgical Critical CareTaxonomy 2086S0102X · License G86010 (CA)

Also ListedSurgery · Trauma SurgeryTaxonomy 2086S0127X · License G86010 (CA)

Also ListedThoracic Surgery (Cardiothoracic Vascular Surgery)Taxonomy 208G00000X · License G86010 (CA)

4000 14TH ST, Riverside, CA 92501

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Other Identifiers 3

Medicare UPINH13795CA

Medicare ID-Type Unspecified00G860100CA · Medicare Id

Medicaid00G860100CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

William R Alex Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with moderate level of medical decision making 99284

An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.

16 services16 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

13 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92501 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$91.88 typical visit price

range $59.60 – $179.42

Typical copayment $22.97 (range $14.90 – $44.85)

Most-billed visit code 99203

Established Patient

$74.08 typical visit price

range $19.37 – $146.42

Typical copayment $18.52 (range $4.84 – $36.60)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

73.04/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

56.75

Promoting Interoperability

Improvement Activities

Cost

34.22

Other Providers at the Same Location NPPES 18

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

RIVERSIDE IMAGING LLC

Clinic/Center (Radiology)

4000 14TH ST, SUITE 109
RIVERSIDE, CA 92501

Riverside County (951) 276-7500

RIVERSIDE IMAGING LLC

Radiology (Diagnostic Radiology)

4000 14TH ST, SUITE 109
RIVERSIDE, CA 92501

Riverside County (951) 276-7500

ASHLEY MEDICAL GROUP, INC

Internal Medicine

4000 14TH ST, STE 213
RIVERSIDE, CA 92501

Riverside County (951) 248-0073

SOUTHERN CALIFORNIA TRANSPLANTATION INSTITUTE

Specialist

4000 14TH ST, SUITE 512
RIVERSIDE, CA 92501

Riverside County (951) 275-9000

DR. JAMES ALVIN BARTLEY MD, PH.D.

Medical Genetics (Clinical Genetics (M.D.))

4000 14TH ST, SUITE # 310
RIVERSIDE, CA 92501

Riverside County (909) 633-6578

WILLIAM R ALEX MD INC

Surgery

4000 14TH ST, STE 306
RIVERSIDE, CA 92501

Riverside County (951) 682-2036

ORANGE PSYCHIATRIC MEDICAL GROUP, INC

Psychiatry & Neurology (Psychiatry)

4000 14TH ST, SUITE 310A
RIVERSIDE, CA 92501

Riverside County (951) 276-1100

ANDREW HO, M.D., INC.

Internal Medicine (Cardiovascular Disease)

4000 14TH ST, SUITE 412
RIVERSIDE, CA 92501

Riverside County (714) 906-6026

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Alex's NPI number?

The NPI number for William Alex is 1558300681. It was assigned to this individual provider in the NPPES registry on June 5, 2006.

Where is William Alex located?

William Alex practices at 4000 14th St Ste 306, Riverside, CA 92501. The listed phone number is (951) 682-2036.

What is William Alex's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is William Alex enrolled in Medicare?

Yes. William Alex is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for William Alex was last updated on March 19, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.