GERALD L TARDER M.D.
NPI 1396833984
Internal Medicine - Gastroenterology in Walnut Creek, CA

Active since October 10, 2006PECOS Enrolled
130 LA CASA VIA, STE 107, WALNUT CREEK, CA 94598(925) 938-6060(925) 938-0119 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Gerald L Tarder M.d. NPPES

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

GERALD L TARDER M.D. (NPI 1396833984) is an individual gastroenterology provider in Walnut Creek, California, licensed in California (G26001) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1396833984
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameGERALD L TARDERCredential: M.D.
Location Address130 LA CASA VIA, STE 107Walnut Creek, CA 94598-3045
Mailing Address130 La Casa Via, Ste 107Walnut Creek, CA 94598-3045 · (925) 938-6060 · Fax (925) 938-0119
Fax(925) 938-0119
Sole ProprietorYes
Enumeration DateOctober 10, 2006
Last NPPES UpdateJuly 8, 2007
NPI 1396833984 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License Licensed in CA · G26001
Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

130 LA CASA VIA, Walnut Creek, CA 94598

Medicare Participation & PECOS Enrollment Status

Gerald Tarder is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

This service was performed 38 times for 31 patients

Biopsy of large bowel using a flexible endoscope

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

This service was performed 92 times for 90 patients

Colonoscopy

A colonoscopy is a medical procedure that allows your doctor to examine your colon (the large intestine). It utilizes a thin, flexible tube with a tiny camera on the end, which is inserted through the rectum. This procedure can help identify issues such as polyps, inflammation, or early signs of cancer. It's usually recommended for people over 50 or those with specific risk factors.

This service was performed for 107 patients

Established patient office or other outpatient visit, 20-29 minutes

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.

This service was performed 14 times for 12 patients

Established patient office or other outpatient visit, 30-39 minutes

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.

This service was performed 128 times for 119 patients

Established patient office or other outpatient visit, 30-39 minutes

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.

This service was performed 91 times for 64 patients

Established patient office or other outpatient visit, 40-54 minutes

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.

This service was performed 104 times for 63 patients

New patient office or other outpatient visit, 45-59 minutes

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.

This service was performed 96 times for 96 patients

New patient office or other outpatient visit, 60-74 minutes

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.

This service was performed 11 times for 11 patients

Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery

This procedure involves using a flexible tube with a camera, called an endoscope, to view the large intestine. If any abnormal growths or polyps are found, they are removed with an electrically-heated instrument. This is a common way to prevent bowel issues.

This service was performed 17 times for 17 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

This service was performed 94 times for 94 patients

Upper gastrointestinal (GI) endoscopy for acid reflux

An upper GI endoscopy is a procedure to examine your esophagus and stomach using a thin, flexible tube called an endoscope. It helps diagnose conditions like acid reflux by identifying any inflammation or damage. It's generally safe, performed under sedation, and takes about 15-30 minutes.

This service was performed for 42 patients

Physician Visit Costs

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 94598 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99204

  • Average New Patient Price $153.83
  • Minimum New Patient Price $69
  • Maximum New Patient Price $202.35
  • Average New Patient Copayment $38.45
  • Minimum New Patient Copayment $17.25
  • Maximum New Patient Copayment $50.58

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99214

  • Average Established Patient Price $119.48
  • Minimum Established Patient Price $23.44
  • Maximum Established Patient Price $166.46
  • Average Established Patient Copayment $29.87
  • Minimum Established Patient Copayment $5.86
  • Maximum Established Patient Copayment $41.61

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Allergy & Immunology
130 LA CASA VIA, BLDG 2, STE 209
WALNUT CREEK, CA 94598
Allergy & Immunology
130 LA CASA VIA, BLDG 2 STE 209
WALNUT CREEK, CA 94598
Allergy & Immunology
130 LA CASA VIA, BLDG 2 STE 209
WALNUT CREEK, CA 94598
Allergy & Immunology
130 LA CASA VIA, BLDG 2, #209
WALNUT CREEK, CA 94598
Allergy & Immunology
130 LA CASA VIA, BLDG 2, # 209
WALNUT CREEK, CA 94598
Plastic Surgery
130 LA CASA VIA, BUILDING 2, SUITE 206
WALNUT CREEK, CA 94598
Allergy & Immunology (Allergy)
130 LA CASA VIA, SUITE 209
WALNUT CREEK, CA 94598
Surgery (Vascular Surgery)
130 LA CASA VIA, STE 201 BLDG 1
WALNUT CREEK, CA 94598
Specialist
130 LA CASA VIA, BUILDING 3, SUITE 211
WALNUT CREEK, CA 94598
Psychiatry & Neurology (Psychiatry)
130 LA CASA VIA, #213
WALNUT CREEK, CA 94598
Plastic Surgery
130 LA CASA VIA, BUILDING 2, SUITE 206
WALNUT CREEK, CA 94598
Dermatology
130 LA CASA VIA, BLDG 2 SUITE 110
WALNUT CREEK, CA 94598
Psychiatry & Neurology (Psychiatry)
130 LA CASA VIA, SUITE: 2-208
WALNUT CREEK, CA 94598
Psychiatry & Neurology (Psychiatry)
130 LA CASA VIA, SUITE 2-208
WALNUT CREEK, CA 94598
Clinic/Center (Medical Specialty)
130 LA CASA VIA, SUITE 102
WALNUT CREEK, CA 94598
Nurse Practitioner
130 LA CASA VIA, #209
WALNUT CREEK, CA 94598
Surgery
130 LA CASA VIA, BLDG 3, SUITE 211
WALNUT CREEK, CA 94598
Internal Medicine (Critical Care Medicine)
130 LA CASA VIA, BLDG. #2, SUITE 208
WALNUT CREEK, CA 94598
Surgery
130 LA CASA VIA, BUILDING 3, SUITE 211
WALNUT CREEK, CA 94598
Allergy & Immunology
130 LA CASA VIA, BUILDING 2, SUITE 209
WALNUT CREEK, CA 94598

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1396833984, enumerated as an "individual" on October 10, 2006.

The provider is located at 130 LA CASA VIA STE 107 WALNUT CREEK, CA 94598 and the phone number is (925) 938-6060.

Internal Medicine with taxonomy code 207RG0100X and a focus in Gastroenterology.