BILL NAM WONG MD
NPI 1477553444
Internal Medicine - Pulmonary Disease in Pleasanton, CA

Q: What is Bill Wong's NPI number?

The NPI number for Bill Wong is 1477553444. It was assigned to this individual provider in the NPPES registry on July 29, 2005.

Q: What is Bill Wong's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

Q: When was this NPI record last updated?

The NPPES record for Bill Wong was last updated on April 29, 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.

Active since July 29, 2005PECOS EnrolledAccepts Medicare Assignment

5575 W LAS POSITAS BLVD STE 130, PLEASANTON, CA 94588(925) 463-0590(925) 847-9532 Get Directions Write a Review

NPPES record last updated: April 29, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 29, 2024, Apr 12, 2024, Oct 3, 2023 and 2 more (5 updates tracked since 2021).

On this page

About Bill Nam Wong Md NPPES

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

BILL NAM WONG MD (NPI 1477553444) is an individual pulmonary disease provider in Pleasanton, California, licensed in California (G48992) and active in the NPI registry since July 2005. He is enrolled in Medicare PECOS and is a graduate of University Of California, San Diego School Of Medicine (1981).

NPPES Registry Identity

NPI1477553444

Entity TypeIndividualMale

Primary Taxonomy207RP1001X

Provider Legal NameBILL NAM WONGCredential: MD

Location Address5575 W LAS POSITAS BLVD STE 130Pleasanton, CA 94588-5800

Mailing Address5575 W Las Positas Blvd Ste 130Pleasanton, CA 94588-5800 · (925) 463-0590 · Fax (925) 847-9532

Phone(925) 463-0590

Fax(925) 847-9532

Sole ProprietorNo

Medical School CMSUniversity Of California, San Diego School Of MedicineGraduated 1981

Enumeration DateJuly 29, 2005

Last NPPES UpdateApril 29, 20245 updates tracked since enumeration

NPPES CertifiedApril 29, 2024

✔ NPI 1477553444 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Pulmonary DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RP1001X

License✔ Licensed in CA · G48992

Definition

An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.

Also ListedInternal MedicineTaxonomy 207R00000X · License G48992 (CA)

5575 W LAS POSITAS BLVD STE 130, Pleasanton, CA 94588

Open in Google Maps ↗

Other Identifiers 1

Medicaid00G489920CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Bill Nam Wong Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5991801581

PECOS Enrollment IDI20090108000116

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 Bill Wong reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Stanford Health Care

0.5 mi

Radiation Oncology

5725 W LAS POSITAS BLVD, SUITE 100B
Pleasanton, CA 94588

Reassigned Medicare billing, California enrollment
4,258 clinicians in this Medicare group

NPI 1124561758 (650) 723-4000

University Healthcare Alliance

15 mi

Internal Medicine

7999 GATEWAY BLVD STE 200
Newark, CA 94560

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

NPI 1760531198 (888) 924-1036

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 13

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.

1,084 services410 patients

Test to examine how well the lungs exchange gases 94729

This is a test called a pulmonary function test, which helps understand the efficiency of your lungs. It measures how much air your lungs can hold, how quickly you can move air in and out of your lungs, and how well your lungs put oxygen into and remove carbon dioxide from your blood.

178 services176 patients

Test to measure expiratory airflow and volume changes before and after medication administration 94060

This procedure measures how air flows in and out of your lungs. It's done before and after medication to see if the treatment improves your breathing. It's a simple, non-invasive test that involves breathing into a device called a spirometer.

168 services167 patients

Test to determine lung volumes using sensors 94726

This test, called spirometry, measures lung capacity using sensors. You breathe into a mouthpiece attached to a device that records the amount and rate of air you inhale and exhale. It helps diagnose and monitor lung conditions.

168 services167 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.

146 services146 patients

Test to examine how well the lungs exchange gases 94729

78 services78 patients

Test to determine lung volumes using sensors 94726

70 services70 patients

Test to measure expiratory airflow and volume changes before and after medication administration 94060

69 services69 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

67 services18 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.

18 services16 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.

14 services13 patients

Test to measure expiratory airflow and volume 94010

This test, known as spirometry, assesses how well your lungs work. It measures how much air you can inhale, how much you can exhale and how quickly you can exhale. It's non-invasive and helps diagnose conditions like asthma or COPD.

13 services12 patients

Test to measure expiratory airflow and volume 94010

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94588 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

$153.83 typical visit price

range $69.00 – $202.35

Typical copayment $38.45 (range $17.25 – $50.58)

Most-billed visit code 99204

Established Patient

$119.48 typical visit price

range $23.44 – $166.46

Typical copayment $29.87 (range $5.86 – $41.61)

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 13

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

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

6 suppliers17 claims36 services$6.24 avg. paid by Medicare

Administration set, with small volume nonfiltered pneumatic nebulizer, disposable A7003

DME-Other DME · category DE000N

2 suppliers13 claims26 services$1.27 avg. paid by Medicare

Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034

DME-Other DME · category DE001N

3 suppliers11 claims11 services$45.29 avg. paid by Medicare

Tubing used with positive airway pressure device A7037

DME-Other DME · category DE001N

3 suppliers12 claims12 services$11.88 avg. paid by Medicare

Filter, disposable, used with positive airway pressure device A7038

DME-Other DME · category DE001N

4 suppliers16 claims96 services$1.67 avg. paid by Medicare

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

DME-Oxygen and Supplies · category DC000N

5 suppliers57 claims58 services$13.40 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 2

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

HARPRIYA SINGH MD

Internal Medicine (Gastroenterology)

5575 W LAS POSITAS BLVD STE 130
PLEASANTON, CA 94588

Alameda County (925) 463-0590

CHIRAG MAHESHBHAI PANDYA MD

Internal Medicine (Critical Care Medicine)

5575 W LAS POSITAS BLVD STE 130
PLEASANTON, CA 94588

Alameda County (925) 463-0590

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 Bill Wong's NPI number?

The NPI number for Bill Wong is 1477553444. It was assigned to this individual provider in the NPPES registry on July 29, 2005.

Where is Bill Wong located?

Bill Wong practices at 5575 W Las Positas Blvd Ste 130, Pleasanton, CA 94588. The listed phone number is (925) 463-0590.

What is Bill Wong's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

Is Bill Wong enrolled in Medicare?

Yes. Bill Wong is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Bill Wong's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Bill Wong reassigns Medicare benefits to 2 organizations: Stanford Health Care (Pleasanton, CA) and University Healthcare Alliance (Newark, 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 Bill Wong'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 Bill Wong was last updated on April 29, 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.