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HARRY H CHAO MD
NPI 1487613451
Internal Medicine in Covina, CA

Active since March 20, 2006PECOS Enrolled
420 W ROWLAND ST, COVINA, CA 91723(626) 331-6411(626) 251-1560 Get Directions Write a Review

NPPES record last updated: April 18, 2008. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Harry H Chao Md NPPES

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

HARRY H CHAO MD (NPI 1487613451) is an individual internal medicine provider in Covina, California, licensed in California (A41275) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1487613451
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameHARRY H CHAOCredential: MD
Location Address420 W ROWLAND STCovina, CA 91723-2943
Mailing Address420 W Rowland StCovina, CA 91723-2943 · (626) 331-6411 · Fax (626) 251-1560
Phone(626) 331-6411
Fax(626) 251-1560
Sole ProprietorNo
Enumeration DateMarch 20, 2006
Last NPPES UpdateApril 18, 2008
✔ NPI 1487613451 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 · A41275
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.
420 W ROWLAND ST, Covina, CA 91723
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Other Identifiers 1

Medicare UPINA29343CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Harry H Chao 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 Reassignment

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

Healthcare Partners Affiliates Medical Group
22 mi
Internal Medicine
1120 W WASHINGTON BLVD
Los Angeles, CA 90015
  • Reassigned Medicare billing, California enrollment
  • 2,052 clinicians in this Medicare group
NPI 1659312593 (213) 623-2225

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91723 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.

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.

DR. NEMISH S. PATEL M.D.
Internal Medicine
420 W ROWLAND ST
COVINA, CA 91723
Los Angeles County (626) 331-6411
DR. ROBERT JOSEPH LEONARD MD
Emergency Medicine
420 W ROWLAND ST
COVINA, CA 91723
Los Angeles County (626) 331-6411
CBC PROFESSIONAL PHARMACY INC
Pharmacy (Community/Retail Pharmacy)
420 W ROWLAND ST
COVINA, CA 91723
Los Angeles County (626) 966-9888
ARLENE L. NEPOMUCENO MD
Internal Medicine
420 W ROWLAND ST
COVINA, CA 91723
Los Angeles County (626) 331-6411
ELIZABETH FRONCISZ KULA MD
Ophthalmology
420 W ROWLAND ST
COVINA, CA 91723
Los Angeles County (626) 331-6411
SHARON J. YEE, M.D., FACP, INC
Internal Medicine (Hematology & Oncology)
420 W ROWLAND ST
COVINA, CA 91723
Los Angeles County (626) 251-1400
SARAH S ANH M.D.
Emergency Medicine
420 W ROWLAND ST
COVINA, CA 91723
Los Angeles County (626) 331-6411
REBECA M. MARTIN MD
Emergency Medicine
420 W ROWLAND ST
COVINA, CA 91723
Los Angeles County (626) 331-6411

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 Harry Chao's NPI number?

The NPI number for Harry Chao is 1487613451. It was assigned to this individual provider in the NPPES registry on March 20, 2006.

Where is Harry Chao located?

Harry Chao practices at 420 W Rowland St, Covina, CA 91723. The listed phone number is (626) 331-6411.

What is Harry Chao's specialty?

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

Is Harry Chao enrolled in Medicare?

Yes. Harry Chao is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Harry Chao's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Harry Chao reassigns Medicare benefits to Healthcare Partners Affiliates Medical Group (Los Angeles, 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 Harry Chao'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 Harry Chao was last updated on April 18, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.