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HAROLD HSU M.D.
NPI 1770508111
Internal Medicine in Rosemead, CA

Active since July 13, 2006PECOS EnrolledAccepts Medicare Assignment
8622 GARVEY AVE, SUITE 103, ROSEMEAD, CA 91770(626) 280-6898(626) 280-6899 Get Directions Write a Review

NPPES record last updated: February 27, 2020. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Harold Hsu M.d. NPPES

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

HAROLD HSU M.D. (NPI 1770508111) is an individual internal medicine provider in Rosemead, California, licensed in California (A 51859) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1982).

NPPES Registry Identity

NPI1770508111
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameHAROLD HSUCredential: M.D.
Location Address8622 GARVEY AVE, SUITE 103Rosemead, CA 91770-3293
Mailing Address8622 Garvey Ave, Suite 103Rosemead, CA 91770-3293 · (626) 280-6898 · Fax (626) 280-6899
Phone(626) 280-6898
Fax(626) 280-6899
Sole ProprietorYes
Medical School CMSOtherGraduated 1982
Enumeration DateJuly 13, 2006
Last NPPES UpdateFebruary 27, 2020
✔ NPI 1770508111 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A 51859
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.

8622 GARVEY AVE, Rosemead, CA 91770
Open in Google Maps ↗

Other Identifiers 1

Medicaid00A518590CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Harold Hsu M.d. 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 ID143361097
PECOS Enrollment IDI20100429000159
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.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D0939345

Harold Hsu, MD Incorporated · Rosemead, CA
Expired · Jan 22, 2026
CLIA Number05D0939345
Laboratory TypePhysician Office
Certificate Effective DateJanuary 23, 2024
Certificate Expiration DateJanuary 22, 2026
Laboratory DirectorHarold Hsu
Laboratory Phone(626) 280-6898
Laboratory LocationHarold Hsu, MD Incorporated8622 Garvey Ave, Ste 103, Rosemead, CA 91770
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Areas of Expertise CMS Part B claims 15

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, 20-29 minutes 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.
1,488 services297 patients
Insertion of needle into vein for collection of blood sample 36415
This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
209 services147 patients
Follow-up nursing facility visit per day, typically 15 minutes 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.
176 services21 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
151 services150 patients
Influenza vaccine, quadrivalent derived from cell cultures 90756
The quadrivalent influenza vaccine, derived from cell cultures, is a flu shot that protects against four different flu viruses. It's made in labs using cell cultures instead of eggs, making it a good option for those with egg allergies. It's a crucial tool in preventing the flu.
148 services147 patients
Follow-up hospital inpatient care per day, typically 25 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
130 services24 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91770 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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 12

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
20 suppliers51 claims100 services$4.61 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
16 suppliers30 claims31 services$0.76 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 suppliers27 claims821 services$4.29 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
1 supplier12 claims4,284 services$0.31 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 suppliers13 claims6,840 services$0.27 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
4 suppliers28 claims28 services$38.05 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 3

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

DR. CHRISTOPHER MICHAEL WONG MD
Internal Medicine
8622 GARVEY AVE, SUITE 103
ROSEMEAD, CA 91770
Los Angeles County (626) 280-6898
HAROLD HSU MD. INCORPORATED
Clinic/Center (Primary Care)
8622 GARVEY AVE, SUITE 103
ROSEMEAD, CA 91770
Los Angeles County (626) 280-6898
WATSONS PHARMACY INC
Pharmacy (Community/Retail Pharmacy)
8622 GARVEY AVE, STE 102
ROSEMEAD, CA 91770
Los Angeles County (626) 280-2223

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 Harold Hsu's NPI number?

The NPI number for Harold Hsu is 1770508111. It was assigned to this individual provider in the NPPES registry on July 13, 2006.

Where is Harold Hsu located?

Harold Hsu practices at 8622 Garvey Ave Suite 103, Rosemead, CA 91770. The listed phone number is (626) 280-6898.

What is Harold Hsu's specialty?

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

Is Harold Hsu enrolled in Medicare?

Yes. Harold 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.

When was this NPI record last updated?

The NPPES record for Harold Hsu was last updated on February 27, 2020. NPI Profile syncs with the weekly NPPES data releases published by CMS.