DR. TAM HOANG NGUYEN D.O.
NPI 1962520478
Internal Medicine in San Jose, CA

Q: What is Tam Nguyen's NPI number?

The NPI number for Tam Nguyen is 1962520478. It was assigned to this individual provider in the NPPES registry on March 26, 2007.

Q: What is Tam Nguyen's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Tam Nguyen was last updated on September 12, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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 March 26, 2007PECOS Enrolled

200 JOSE FIGUERES AVE STE 180, SAN JOSE, CA 95116(408) 258-5083(408) 258-4347 Get Directions Write a Review

NPPES record last updated: September 12, 2018. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 12, 2018, Aug 20, 2018 (2 updates tracked since 2018).

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About Dr. Tam Hoang Nguyen D.o. NPPES

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

DR. TAM HOANG NGUYEN D.O. (NPI 1962520478) is an individual internal medicine provider in San Jose, California, licensed in California (20A9636) and active in the NPI registry since March 2007. He is enrolled in Medicare PECOS and is a graduate of Other (2004).

NPPES Registry Identity

NPI1962520478

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. TAM HOANG NGUYENCredential: D.O.

Location Address200 JOSE FIGUERES AVE STE 180San Jose, CA 95116-1586

Mailing Address4945 Palemetto Dunes CtSan Jose, CA 95138-2131 · (408) 258-5083 · Fax (408) 258-4347

Phone(408) 258-5083

Fax(408) 258-4347

Sole ProprietorNo

Medical School CMSOtherGraduated 2004

Enumeration DateMarch 26, 2007

Last NPPES UpdateSeptember 12, 20182 updates tracked since enumeration

✔ NPI 1962520478 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CA · 20A9636

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedHospitalistTaxonomy 208M00000X · License 20A9636 (CA)

200 JOSE FIGUERES AVE STE 180, San Jose, CA 95116

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Other Identifiers 1

Other20A9636CA · Medical License

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Tam Hoang Nguyen D.o. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID7315048006

PECOS Enrollment IDI20070725000300

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 Tam Nguyen reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Bay Area Hospital Physician

Same address

Internal Medicine

200 JOSE FIGUERES AVE STE 180
San Jose, CA 95116

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

NPI 1043476393 (408) 258-5083

Silicon Valley Internist Group, Inc

Same address

Internal Medicine

200 JOSE FIGUERES AVE STE 180
San Jose, CA 95116

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

NPI 1184998122 (408) 258-5083

Evergreen Urgent Care Inc

3.3 mi

Urgent Care

2365 QUIMBY ROAD, SUITE 160
San Jose, CA 95122

Reassigned Medicare billing, California enrollment

NPI 1487048963 (408) 258-5083

Valley Advantage Medical Group Inc

3.3 mi

Internal Medicine

2365 QUIMBY ROAD, SUITE 160
San Jose, CA 95122

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

NPI 1215445291 (408) 550-2750

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 11

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.

2,767 services857 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.

196 services196 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.

166 services133 patients

Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and G0180

This is a service where a doctor or authorized practitioner certifies that you require Medicare-covered home health services. They will communicate with the home health agency and review reports on your health status to ensure you receive appropriate care. This does not involve an in-person visit.

66 services46 patients

Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes 99349

An established patient home visit is a medical appointment conducted at your home, typically lasting around 40 minutes. This service is ideal for patients who may find it difficult to travel to a healthcare facility. During this visit, a healthcare professional will evaluate your health status, manage your care, and answer any health-related questions you may have.

42 services26 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

22 services22 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95116 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

$156.67 typical visit price

range $70.37 – $206.04

Typical copayment $39.16 (range $17.59 – $51.51)

Most-billed visit code 99204

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 28

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

32 suppliers144 claims318 services$5.61 avg. paid by Medicare

Lancets, per box of 100 A4259

DME-Medical/Surgical Supplies · category DA000N

26 suppliers99 claims128 services$0.90 avg. paid by Medicare

Tubing with integrated heating element for use with positive airway pressure device A4604

DME-Other DME · category DE001N

3 suppliers14 claims14 services$31.55 avg. paid by Medicare

Cushion for use on nasal mask interface, replacement only, each A7032

DME-Other DME · category DE001N

4 suppliers14 claims70 services$14.62 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 suppliers20 claims20 services$42.61 avg. paid by Medicare

Headgear used with positive airway pressure device A7035

DME-Other DME · category DE001N

4 suppliers16 claims16 services$14.26 avg. paid by Medicare

Tubing used with positive airway pressure device A7037

DME-Other DME · category DE001N

3 suppliers12 claims12 services$11.49 avg. paid by Medicare

Filter, disposable, used with positive airway pressure device A7038

DME-Other DME · category DE001N

4 suppliers30 claims158 services$1.75 avg. paid by Medicare

Filter, non disposable, used with positive airway pressure device A7039

DME-Other DME · category DE001N

2 suppliers12 claims12 services$5.04 avg. paid by Medicare

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

4 suppliers24 claims735 services$2.53 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

4 suppliers18 claims554 services$4.17 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 suppliers14 claims6,124 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

2 suppliers17 claims9,743 services$0.30 avg. paid by Medicare

Enteral formula, nutritionally complete, for special metabolic needs, excludes inherited disease of metabolism, includes altered composition of proteins, fats, carbohydrates, vitamins and/or minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit B4154

Other-Enteral and Parenteral · category OB006N

4 suppliers12 claims4,464 services$0.48 avg. paid by Medicare

Walker, folding, wheeled, adjustable or fixed height E0143

DME-Other DME · category DE000N

4 suppliers19 claims19 services$37.28 avg. paid by Medicare

Seat attachment, walker E0156

DME-Other DME · category DE000N

3 suppliers16 claims16 services$15.16 avg. paid by Medicare

Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress E0260

DME-Hospital Beds · category DB000N

3 suppliers40 claims40 services$42.64 avg. paid by Medicare

Hospital bed, semi-electric (head and foot adjustment), without side rails, without mattress E0295

DME-Hospital Beds · category DB000N

1 supplier26 claims26 services$32.29 avg. paid by Medicare

Bed side rails, half length E0305

DME-Hospital Beds · category DB000N

1 supplier26 claims26 services$4.70 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

3 suppliers58 claims58 services$12.79 avg. paid by Medicare

Continuous positive airway pressure (cpap) device E0601

DME-Other DME · category DE001N

1 supplier27 claims27 services$25.77 avg. paid by Medicare

Patient lift, hydraulic or mechanical, includes any seat, sling, strap(s) or pad(s) E0630

DME-Other DME · category DE000N

1 supplier16 claims16 services$32.39 avg. paid by Medicare

Iv pole E0776

DME-Other DME · category DE000N

2 suppliers13 claims13 services$3.69 avg. paid by Medicare

Transport chair, adult size, patient weight capacity up to and including 300 pounds E1038

DME-Other DME · category DE000N

1 supplier18 claims18 services$8.65 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

4 suppliers76 claims76 services$55.72 avg. paid by Medicare

Standard wheelchair K0001

DME-Wheelchairs · category DD000N

2 suppliers50 claims50 services$12.76 avg. paid by Medicare

Elevating leg rests, pair (for use with capped rental wheelchair base) K0195

DME-Wheelchairs · category DD021N

1 supplier18 claims18 services$6.98 avg. paid by Medicare

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553

DME-Other DME · category DE017N

1 supplier16 claims16 services$198.11 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 5

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

BAY AREA HOSPITAL PHYSICIAN

Internal Medicine

200 JOSE FIGUERES AVE STE 180
SAN JOSE, CA 95116

Santa Clara County (408) 258-5083

SILICON VALLEY INTERNIST GROUP, INC

Internal Medicine

200 JOSE FIGUERES AVE STE 180
SAN JOSE, CA 95116

Santa Clara County (408) 258-5083

JENNY DACI YANG, PC

Internal Medicine (Gastroenterology)

200 JOSE FIGUERES AVE STE 180
SAN JOSE, CA 95116

Santa Clara County (408) 740-3353

VAN THANH LY FNP-C

Nurse Practitioner (Family)

200 JOSE FIGUERES AVE STE 180
SAN JOSE, CA 95116

Santa Clara County (408) 876-0836

MD24 SJ, INC.

Family Medicine

200 JOSE FIGUERES AVE STE 180
SAN JOSE, CA 95116

Santa Clara County (623) 374-7774

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 Tam Nguyen's NPI number?

The NPI number for Tam Nguyen is 1962520478. It was assigned to this individual provider in the NPPES registry on March 26, 2007.

Where is Tam Nguyen located?

Tam Nguyen practices at 200 Jose Figueres Ave Ste 180, San Jose, CA 95116. The listed phone number is (408) 258-5083.

What is Tam Nguyen's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Tam Nguyen enrolled in Medicare?

Yes. Tam Nguyen is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Tam Nguyen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tam Nguyen reassigns Medicare benefits to 4 organizations: Bay Area Hospital Physician (San Jose, CA), Silicon Valley Internist Group, Inc (San Jose, CA), Evergreen Urgent Care Inc (San Jose, CA) and Valley Advantage Medical Group Inc (San Jose, 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 Tam Nguyen'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 Tam Nguyen was last updated on September 12, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.