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WILLIAM S WARSHAL MD
NPI 1285620666
Family Medicine in Los Gatos, CA

Active since September 21, 2005PECOS Enrolled
15251 NATIONAL AVE STE 104, LOS GATOS, CA 95032(408) 605-8612(650) 631-2448 Get Directions Write a Review

NPPES record last updated: May 1, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About William S Warshal Md NPPES

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

WILLIAM S WARSHAL MD (NPI 1285620666) is an individual family medicine provider in Los Gatos, California, licensed in California (G41468) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1285620666
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameWILLIAM S WARSHALCredential: MD
Location Address15251 NATIONAL AVE STE 104Los Gatos, CA 95032-2400
Mailing Address15251 National Ave Ste 104Los Gatos, CA 95032-2400 · (408) 605-8612 · Fax (650) 631-2448
Phone(408) 605-8612
Fax(650) 631-2448
Sole ProprietorYes
Enumeration DateSeptember 21, 2005
Last NPPES UpdateMay 1, 2024
NPPES CertifiedMay 1, 2024
✔ NPI 1285620666 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · G41468
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
Also ListedFamily Medicine · Geriatric MedicineTaxonomy 207QG0300X · License G41468 (CA)
15251 NATIONAL AVE STE 104, Los Gatos, CA 95032
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Other Identifiers 1

Medicaid00G414681CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

William S Warshal 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.

Medicare Billing Reassignments

2

Medicare enrollment records show William Warshal reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Woods And Warshal Medical Group Inc
4.5 mi
Geriatric Medicine
12980 TEN OAK WAY
Saratoga, CA 95070
  • Reassigned Medicare billing, California enrollment
  • 6 clinicians in this Medicare group
NPI 1265801500 (650) 631-8300
Seasons Medical Group Of California Incorporated
405 mi
Hospice and Palliative Medicine
9915 MIRA MESA BLVD STE 370
San Diego, CA 92131
  • Reassigned Medicare billing, California enrollment
  • 38 clinicians in this Medicare group
NPI 1790239473 (858) 592-2000

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 5

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.

Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes 99310
A follow-up nursing facility visit is a routine check-up that typically lasts about 35 minutes. During this visit, your health status is evaluated, any changes in your condition are noted, and necessary adjustments to your care plan are made. It's an essential part of maintaining your health.
640 services247 patients
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309
A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.
398 services126 patients
Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more 99306
An initial nursing facility visit is your first meeting with your healthcare team at a nursing facility. Lasting typically 45 minutes, this appointment involves a comprehensive health assessment and the creation of your personalized care plan. It's a crucial step to ensure your health and well-being.
274 services253 patients
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more 99308
A follow-up nursing facility visit per day is a daily check-up service provided by healthcare professionals. It lasts around 15 minutes and involves assessing your health status, monitoring your recovery progress, and addressing any concerns you may have about your health or treatment.
49 services33 patients
Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes 99305
An initial nursing facility visit per day is a service where a healthcare professional spends about 35 minutes assessing a patient's health status. This includes reviewing medical history, conducting a physical exam, and developing a care plan based on the patient's needs.
39 services35 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95032 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
$106.47 typical visit price
range $70.37 – $206.04
Typical copayment $26.61 (range $17.59 – $51.51)
Most-billed visit code 99203
Established Patient
$121.77 typical visit price
range $23.96 – $169.60
Typical copayment $30.44 (range $5.99 – $42.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 24

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

Enteral feeding supply kit; syringe fed, per day, includes but not limited to feeding/flushing syringe, administration set tubing, dressings, tape B4034
Other-Enteral and Parenteral · category OB006N
2 suppliers12 claims371 services$2.44 avg. paid by Medicare
Enteral feeding supply kit; pump fed, per day, includes but not limited to feeding/flushing syringe, administration set tubing, dressings, tape B4035
Other-Enteral and Parenteral · category OB006N
3 suppliers99 claims2,676 services$4.33 avg. paid by Medicare
Enteral feeding supply kit; gravity fed, per day, includes but not limited to feeding/flushing syringe, administration set tubing, dressings, tape B4036
Other-Enteral and Parenteral · category OB006N
1 supplier12 claims372 services$3.50 avg. paid by Medicare
Enteral formula, manufactured blenderized natural foods with intact nutrients, includes proteins, fats, carbohydrates, vitamins and minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit B4149
Other-Enteral and Parenteral · category OB006N
1 supplier12 claims4,000 services$0.94 avg. paid by Medicare
Enteral formula, nutritionally complete with intact nutrients, includes proteins, fats, carbohydrates, vitamins and minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit B4150
Other-Enteral and Parenteral · category OB006N
3 suppliers36 claims13,073 services$0.32 avg. paid by Medicare
Enteral formula, nutritionally complete, calorically dense (equal to or greater than 1.5 kcal/ml) with intact nutrients, includes proteins, fats, carbohydrates, vitamins and minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit B4152
Other-Enteral and Parenteral · category OB006N
3 suppliers22 claims11,004 services$0.27 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.

ABOUT WOMEN'S HEALTH MEDICAL GROUP
Clinic/Center
15251 NATIONAL AVE STE 104
LOS GATOS, CA 95032
Santa Clara County (408) 358-7360

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 Warshal's NPI number?

The NPI number for William Warshal is 1285620666. It was assigned to this individual provider in the NPPES registry on September 21, 2005.

Where is William Warshal located?

William Warshal practices at 15251 National Ave Ste 104, Los Gatos, CA 95032. The listed phone number is (408) 605-8612.

What is William Warshal's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is William Warshal enrolled in Medicare?

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

Which organizations bill Medicare for William Warshal's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Warshal reassigns Medicare benefits to 2 organizations: Woods And Warshal Medical Group Inc (Saratoga, CA) and Seasons Medical Group Of California Incorporated (San Diego, 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 Warshal'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 Warshal was last updated on May 1, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.