DR. NANCY HSU MD
NPI 1265789960
Internal Medicine - Sleep Medicine in La Jolla, CA

Q: What is Nancy Hsu's NPI number?

The NPI number for Nancy Hsu is 1265789960. It was assigned to this individual provider in the NPPES registry on August 13, 2012.

Q: What is Nancy Hsu's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Sleep Medicine, with taxonomy code 207RS0012X.

Q: When was this NPI record last updated?

The NPPES record for Nancy Hsu was last updated on December 18, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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 August 13, 2012PECOS EnrolledAccepts Medicare Assignment

10666 N TORREY PINES RD, LA JOLLA, CA 92037(858) 554-8860 Get Directions Write a Review

NPPES record last updated: December 18, 2019. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Dec 18, 2019, Jul 15, 2019, Feb 1, 2016 (3 updates tracked since 2016).

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About Dr. Nancy Hsu Md NPPES

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

DR. NANCY HSU MD (NPI 1265789960) is an individual sleep medicine provider in La Jolla, California, licensed in California (A126662) and active in the NPI registry since August 2012. She is enrolled in Medicare PECOS, maintains a secondary practice location in Los Angeles, and is a graduate of University Of California, San Francisco School Of Medicine (2012).

NPPES Registry Identity

NPI1265789960

Entity TypeIndividualFemale

Primary Taxonomy207RS0012X

Provider Legal NameDR. NANCY HSUCredential: MD

Location Address10666 N TORREY PINES RDLa Jolla, CA 92037-1027

Mailing Address10790 Rancho Bernardo Rd # 4s-205San Diego, CA 92127-5705 · (858) 554-8860

Phone(858) 554-8860

Sole ProprietorYes

Medical School CMSUniversity Of California, San Francisco School Of MedicineGraduated 2012

Enumeration DateAugust 13, 2012

Last NPPES UpdateDecember 18, 20193 updates tracked since enumeration

✔ NPI 1265789960 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Sleep MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207RS0012X

License✔ Licensed in CA · A126662

Definition

An Internist who practices Sleep Medicine is certified in the subspecialty of sleep medicine and specializes in the clinical assessment, physiologic testing, diagnosis, management and prevention of sleep and circadian rhythm disorders. Sleep specialists treat patients of any age and use multidisciplinary approaches. Disorders managed by sleep specialists include, but are not limited to, sleep related breathing disorders, insomnia, hypersomnias, circadian rhythm sleep disorders, parasomnias and sleep related movement disorders.

Also ListedInternal Medicine · Critical Care MedicineTaxonomy 207RC0200X · License A126662 (CA)

Also ListedInternal Medicine · Pulmonary DiseaseTaxonomy 207RP1001X · License A126662 (CA)

10666 N TORREY PINES RD, La Jolla, CA 92037

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Secondary Practice Location 1

Location 110833 Le Conte Ave, 37-131 CHSLos Angeles, CA 90095-3075 · Phone (310) 825-5615

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X MULTIPLE SINGLE SPECIALTY GROUP

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

Dr. Nancy Hsu 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 ID9032494836

PECOS Enrollment IDI20170317000762

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 Reassignment

Medicare enrollment records show Nancy Hsu reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Scripps Health

Same address

Multi-Specialty

10666 N TORREY PINES RD
La Jolla, CA 92037

Reassigned Medicare billing, California enrollment
1,598 clinicians in this Medicare group

NPI 1275899072 (858) 554-9100

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 10

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.

785 services577 patients

Sleep study including heart rate, breathing, and sleep time 95800

A sleep study monitors your sleep patterns to evaluate your sleep quality. It records your heart rate, breathing, and actual sleep time. This information helps identify any sleep disorders, ensuring you get the rest you need for optimal health.

376 services280 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.

248 services248 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.

220 services159 patients

Sleep study in sleep lab (6 years or older) 95810

A sleep study in a sleep lab is a non-invasive overnight test that monitors your body while you sleep. It helps doctors understand your sleep patterns and identify any issues like sleep apnea or insomnia. You'll be connected to equipment that tracks your heart rate, brain waves, breathing, and movements.

96 services96 patients

Sleep study in sleep lab with continuous airway pressure (6 years or older) 95811

A sleep study in a sleep lab with continuous airway pressure is a test for individuals aged 6 and above. It monitors your sleep patterns to check for disorders like sleep apnea. Continuous airway pressure helps keep your airways open while you sleep, improving your breathing.

71 services68 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92037 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

$140.22 typical visit price

range $62.10 – $184.71

Typical copayment $35.05 (range $15.52 – $46.17)

Most-billed visit code 99204

Established Patient

$108.42 typical visit price

range $20.62 – $151.42

Typical copayment $27.10 (range $5.15 – $37.85)

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 23

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

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

DME-Other DME · category DE001N

6 suppliers478 claims478 services$33.23 avg. paid by Medicare

Full face mask used with positive airway pressure device, each A7030

DME-Other DME · category DE001N

3 suppliers163 claims163 services$72.67 avg. paid by Medicare

Face mask interface, replacement for full face mask, each A7031

DME-Other DME · category DE001N

3 suppliers165 claims486 services$28.45 avg. paid by Medicare

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

DME-Other DME · category DE001N

9 suppliers391 claims2,259 services$15.44 avg. paid by Medicare

Pillow for use on nasal cannula type interface, replacement only, pair A7033

DME-Other DME · category DE001N

8 suppliers260 claims1,491 services$12.91 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

9 suppliers637 claims637 services$45.57 avg. paid by Medicare

Headgear used with positive airway pressure device A7035

DME-Other DME · category DE001N

9 suppliers417 claims417 services$15.74 avg. paid by Medicare

Chinstrap used with positive airway pressure device A7036

DME-Other DME · category DE001N

6 suppliers30 claims30 services$9.17 avg. paid by Medicare

Tubing used with positive airway pressure device A7037

DME-Other DME · category DE001N

7 suppliers285 claims285 services$10.28 avg. paid by Medicare

Filter, disposable, used with positive airway pressure device A7038

DME-Other DME · category DE001N

8 suppliers763 claims4,421 services$1.70 avg. paid by Medicare

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

DME-Other DME · category DE001N

6 suppliers59 claims59 services$4.88 avg. paid by Medicare

Water chamber for humidifier, used with positive airway pressure device, replacement, each A7046

DME-Other DME · category DE001N

7 suppliers67 claims67 services$11.30 avg. paid by Medicare

Home ventilator, any type, used with invasive interface, (e.g., tracheostomy tube) E0465

DME-Other DME · category DE005N

1 supplier12 claims12 services$784.18 avg. paid by Medicare

Home ventilator, any type, used with non-invasive interface, (e.g., mask, chest shell) E0466

DME-Other DME · category DE005N

3 suppliers50 claims50 services$779.60 avg. paid by Medicare

Respiratory assist device, bi-level pressure capability, without backup rate feature, used with noninvasive interface, e.g., nasal or facial mask (intermittent assist device with continuous positive airway pressure device) E0470

DME-Other DME · category DE001N

5 suppliers173 claims173 services$71.92 avg. paid by Medicare

Humidifier, heated, used with positive airway pressure device E0562

DME-Other DME · category DE001N

5 suppliers121 claims121 services$106.83 avg. paid by Medicare

Humidifier, heated, used with positive airway pressure device E0562

DME-Other DME · category DE001N

4 suppliers11 claims11 services$10.34 avg. paid by Medicare

Nebulizer, with compressor E0570

DME-Other DME · category DE000N

2 suppliers46 claims46 services$2.94 avg. paid by Medicare

Continuous positive airway pressure (cpap) device E0601

DME-Other DME · category DE001N

7 suppliers1,032 claims1,032 services$25.13 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

4 suppliers39 claims39 services$57.37 avg. paid by Medicare

Portable oxygen concentrator, rental E1392

DME-Oxygen and Supplies · category DC002N

4 suppliers39 claims41 services$29.91 avg. paid by Medicare

Albuterol, up to 2.5 mg and ipratropium bromide, up to 0.5 mg, fda-approved final product, non-compounded, administered through dme J7620

DME-Drugs Administered Through DME · category DG006N

3 suppliers12 claims810 services$0.10 avg. paid by Medicare

Pharmacy dispensing fee for inhalation drug(s); per 30 days Q0513

DME-Other DME · category DE000N

5 suppliers26 claims26 services$26.07 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 20

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

MRS. SUSAN ELIZABETH MCKIM PA-C

Physician Assistant (Medical)

10666 N TORREY PINES RD
LA JOLLA, CA 92037

San Diego County (858) 554-8646

ROBERT R. VARNEY M.D.

Radiology (Vascular & Interventional Radiology)

10666 N TORREY PINES RD
LA JOLLA, CA 92037

San Diego County (858) 626-7275

DR. ERMINIA M. GUARNERI M.D.

Internal Medicine (Cardiovascular Disease)

10666 N TORREY PINES RD
LA JOLLA, CA 92037

San Diego County (858) 554-3330

KATRINA DELEON MD

Internal Medicine (Geriatric Medicine)

10666 N TORREY PINES RD
LA JOLLA, CA 92037

San Diego County (858) 554-6158

VIRGINIA CHAN MD

Hospitalist

10666 N TORREY PINES RD
LA JOLLA, CA 92037

San Diego County (858) 554-3200

NOOR QADDOUR DO

Hospitalist

10666 N TORREY PINES RD
LA JOLLA, CA 92037

San Diego County (858) 554-7909

DR. DEAN J. VAYSER D.P.M.

Podiatrist

10666 N TORREY PINES RD
LA JOLLA, CA 92037

San Diego County (858) 554-9300

DR. ARASH KERMANSHAHI M.D.

Orthopaedic Surgery

10666 N TORREY PINES RD
LA JOLLA, CA 92037

San Diego County (858) 554-7993

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 Nancy Hsu's NPI number?

The NPI number for Nancy Hsu is 1265789960. It was assigned to this individual provider in the NPPES registry on August 13, 2012.

Where is Nancy Hsu located?

Nancy Hsu practices at 10666 N Torrey Pines Rd, La Jolla, CA 92037. The listed phone number is (858) 554-8860.

What is Nancy Hsu's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Sleep Medicine, with taxonomy code 207RS0012X.

Is Nancy Hsu enrolled in Medicare?

Yes. Nancy Hsu 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 organization bills Medicare for Nancy Hsu's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nancy Hsu reassigns Medicare benefits to Scripps Health (La Jolla, CA). The 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 Nancy Hsu'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 Nancy Hsu was last updated on December 18, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.