WILLIAM FRANK PEARCE M.D.
NPI 1730293838
Urology in Santa Ana, CA

Q: What is William Pearce's NPI number?

The NPI number for William Pearce is 1730293838. It was assigned to this individual provider in the NPPES registry on August 18, 2006.

Q: What is William Pearce's specialty?

The primary specialty registered for this NPI is Urology with taxonomy code 208800000X.

Q: When was this NPI record last updated?

The NPPES record for William Pearce was last updated on January 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months 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 August 18, 2006PECOS Enrolled

98.42/100

CMS Quality Rating

801 N TUSTIN AVE STE 204, SANTA ANA, CA 92705(714) 450-1047(714) 628-0715 Get Directions Write a Review

NPPES record last updated: January 6, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jan 6, 2026, Jan 29, 2016 (2 updates tracked since 2016).

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About William Frank Pearce M.d. NPPES

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

WILLIAM FRANK PEARCE M.D. (NPI 1730293838) is an individual urology provider in Santa Ana, California, licensed in California (A80700) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and is a graduate of Stanford University School Of Medicine (1997).

NPPES Registry Identity

NPI1730293838

Entity TypeIndividualMale

Primary Taxonomy208800000X

Provider Legal NameWILLIAM FRANK PEARCECredential: M.D.

Location Address801 N TUSTIN AVE STE 204Santa Ana, CA 92705-3600

Mailing Address801 N Tustin Ave Ste 204Santa Ana, CA 92705-3600 · (714) 450-1047 · Fax (714) 628-0715

Phone(714) 450-1047

Fax(714) 628-0715

Sole ProprietorYes

Medical School CMSStanford University School Of MedicineGraduated 1997

Enumeration DateAugust 18, 2006

Last NPPES UpdateJanuary 6, 20262 updates tracked since enumeration

NPPES CertifiedJanuary 6, 2026

✔ NPI 1730293838 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyUrologyAllopathic & Osteopathic Physicians

Taxonomy Code208800000X

License✔ Licensed in CA · A80700

Definition

A urologist manages benign and malignant medical and surgical disorders of the genitourinary system and the adrenal gland. This specialist has comprehensive knowledge of and skills in endoscopic, percutaneous and open surgery of congenital and acquired conditions of the urinary and reproductive systems and their contiguous structures.

801 N TUSTIN AVE STE 204, Santa Ana, CA 92705

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

William Frank Pearce M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID9335033018

PECOS Enrollment IDI20040212000391

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.

Medicare Billing Reassignments

Medicare enrollment records show William Pearce reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

William F Pearce MD Professional Corporation

Same address

Urology

801 N TUSTIN AVE STE 204
Santa Ana, CA 92705

Reassigned Medicare billing, California enrollment

NPI 1851276620 (714) 450-1047

Entrust Medical Corporation

2.6 mi

Otolaryngology

1140 W LA VETA AVE, STE. 520
Orange, CA 92868

Reassigned Medicare billing, California enrollment
6 clinicians in this Medicare group

NPI 1922090372 (714) 543-2000

Adventist Health Physicians Network

36 mi

Obstetrics & Gynecology

1505 WILSON TER STE 300
Glendale, CA 91206

Reassigned Medicare billing, California enrollment
678 clinicians in this Medicare group

NPI 1669093357 (818) 243-8431

Reedley Community Hospital

217 mi

General Acute Care Hospital

372 W. CYPRESS AVE
Reedley, CA 93654

Reassigned Medicare billing, California enrollment
315 clinicians in this Medicare group

NPI 1336167550 (559) 638-8155

Orohealth Corporation A Non Profit Healthcare System

447 mi

Family Medicine

2767 OLIVE HWY
Oroville, CA 95966

Reassigned Medicare billing, California enrollment
267 clinicians in this Medicare group

NPI 1013933167 (530) 533-8500

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 19

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

445 services280 patients

Complete ultrasound scan of pelvis 76856

A complete ultrasound scan of the pelvis is a safe, non-invasive imaging procedure. It uses sound waves to create pictures of your lower abdomen area, helping doctors to evaluate and diagnose any potential issues. It's painless and usually takes about 30 minutes.

221 services164 patients

Dilation of urethra using an endoscope 52281

This procedure involves expanding a narrow passage in your urinary tract with the help of a special instrument called an endoscope. It aids in improving urine flow and resolving related issues, ensuring better urinary health.

153 services118 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

132 services92 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

95 services95 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

59 services58 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

36 services36 patients

Biopsy of prostate gland 55700

A biopsy of the prostate gland is a procedure where a small sample of tissue is taken from your body's internal gland, located near the bladder, for testing. This helps in diagnosing potential health issues. It's usually done with a fine needle and imaging technology for accuracy.

23 services22 patients

Ultrasonic guidance for needle placement 76942

Ultrasonic guidance for needle placement is a technique where sound waves create images that help accurately position the needle during procedures. This method ensures precision, minimizes discomfort, and increases safety.

23 services22 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

18 services18 patients

Removal of stent in ureter through ureter with review by radiologist 50386

This procedure involves the careful extraction of a small tube (stent) from the tube that connects your kidney to your bladder (ureter). This is done under the supervision of a specialist who uses imaging technology to ensure a safe and precise removal.

17 services16 patients

Insertion of stent in ureter using an endoscope 52332

This procedure involves placing a small, flexible tube (stent) in your body's drainage system to help urine flow from the kidneys to the bladder. An endoscope, a thin tube with a light and camera, is used for precise placement.

17 services16 patients

Complex measurement of pressure of urine flow in bladder with voiding pressure studies 51728

This procedure measures the pressure in your bladder as it fills and empties. It helps to understand how well your bladder is functioning. Sensors record pressure levels during these processes, providing valuable data for your doctor.

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.

16 services16 patients

Crushing of stone of ureter with insertion of stent using an endoscope 52356

This procedure involves using a thin, flexible tube (endoscope) to locate and break down kidney stones in the ureter. After this, a small tube (stent) is inserted to help maintain an open pathway for urine to flow.

15 services13 patients

Electronic assessment of bladder emptying 51741

Electronic assessment of bladder emptying is a non-invasive test that measures how well your bladder functions. It uses ultrasound technology to create images of your bladder before and after you use the restroom, helping to identify any issues with bladder emptying.

14 services14 patients

Non-needle measurement and recording of electrical activity of muscles at bladder and bowel openings 51784

This procedure involves the use of non-invasive devices to record the electrical activity of muscles at specific body openings. It's helpful in understanding muscle function and can assist in diagnosing certain conditions.

14 services14 patients

Shock wave crushing of kidney stones 50590

Shock wave crushing of kidney stones, also known as Extracorporeal Shock Wave Lithotripsy (ESWL), is a non-invasive treatment. It involves the use of sound waves to break down kidney stones into small pieces that can easily pass through your urinary tract.

13 services13 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

13 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92705 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

$142.39 typical visit price

range $62.96 – $187.60

Typical copayment $35.59 (range $15.74 – $46.90)

Most-billed visit code 99204

Established Patient

$77.96 typical visit price

range $20.84 – $153.61

Typical copayment $19.49 (range $5.21 – $38.40)

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.

98.42/100

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

Scored as part of a group practice

Quality

84.7

Promoting Interoperability

Improvement Activities

Cost

96.71

Reported Quality Measures

Urinary Incontinence: Assessment of Presence or Absence of Urinary Incontinence in Women Aged 65 Years and Older

Percentage of female patients aged 65 years and older who were assessed for the presence or absence of urinary incontinence within 12 months

100%202 patients5/55-star benchmark: 100%

Urinary Incontinence: Plan of Care for Urinary Incontinence in Women Aged 65 Years and Older

Percentage of female patients aged 65 years and older with a diagnosis of urinary incontinence with a documented plan of care for urinary incontinence at least once within 12 months

100%49 patients

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

1 supplier12 claims12 services$16.13 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

1 supplier12 claims12 services$82.90 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES

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

WILLIAM F PEARCE MD PROFESSIONAL CORPORATION

Urology

801 N TUSTIN AVE STE 204
SANTA ANA, CA 92705

Orange County (714) 450-1047

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 Pearce's NPI number?

The NPI number for William Pearce is 1730293838. It was assigned to this individual provider in the NPPES registry on August 18, 2006.

Where is William Pearce located?

William Pearce practices at 801 N Tustin Ave Ste 204, Santa Ana, CA 92705. The listed phone number is (714) 450-1047.

What is William Pearce's specialty?

The primary specialty registered for this NPI is Urology with taxonomy code 208800000X.

Is William Pearce enrolled in Medicare?

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

Which organizations bill Medicare for William Pearce's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Pearce reassigns Medicare benefits to 5 organizations: William F Pearce MD Professional Corporation (Santa Ana, CA), Entrust Medical Corporation (Orange, CA), Adventist Health Physicians Network (Glendale, CA), Reedley Community Hospital (Reedley, CA) and Orohealth Corporation A Non Profit Healthcare System (Oroville, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Pearce's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for William Pearce was last updated on January 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months 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.