1. Home
  2. Directory
  3. California
  4. San Leandro
  5. Internal Medicine
  6. NPI Profile

MARY SAEUN HONG M.D.
NPI 1861570624
Internal Medicine in San Leandro, CA

Active since November 01, 2006PECOS Enrolled
3553 WHIPPLE ROAD, SAN LEANDRO, CA 94587(510) 454-1000 Get Directions Write a Review

NPPES record last updated: February 2, 2022. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Feb 2, 2022, Oct 2, 2015 (2 updates tracked since 2015).

About Mary Saeun Hong M.d. NPPES

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

MARY SAEUN HONG M.D. (NPI 1861570624) is an individual internal medicine provider in San Leandro, California, licensed in California (A61806) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1861570624
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameMARY SAEUN HONGCredential: M.D.
Location Address3553 WHIPPLE ROADSan Leandro, CA 94587-1507
Mailing Address3553 Whipple RoadUnion City, CA 94587-1507 · (510) 454-1000
Phone(510) 454-1000
Sole ProprietorNo
Enumeration DateNovember 1, 2006
Last NPPES UpdateFebruary 2, 20222 updates tracked since enumeration
NPPES CertifiedFebruary 2, 2022
✔ NPI 1861570624 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 · A61806
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.
3553 WHIPPLE ROAD, San Leandro, CA 94587
Open in Google Maps ↗

Other Identifiers 1

Medicaid00A618060CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mary Saeun Hong M.d. 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94587 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.

Other Providers at the Same Location NPPES 11

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

JOSEPH A BACHICHA M.D.
Obstetrics & Gynecology
3553 WHIPPLE ROAD
UNION CITY, CA 94587
Alameda County (510) 454-1000
DR. SALLY LIN MD
Ophthalmology
3553 WHIPPLE ROAD, BLDG B, 1ST FLOOR
UNION CITY, CA 94587
Alameda County (510) 675-2020
ERIC S. BRONDFIELD MD
Internal Medicine
3553 WHIPPLE ROAD
UNION CITY, CA 94587
Alameda County (510) 784-4000
DR. LAUREN YOKOMIZO
Internal Medicine
3553 WHIPPLE ROAD, BUILDING B, STATION 6
UNION CITY, CA 94587
Alameda County (212) 263-5506
JAMES KEVIN MASSENGILL M.D.
Obstetrics & Gynecology
3553 WHIPPLE ROAD
UNION CITY, CA 94587
Alameda County (510) 454-1000
MR. DUANE CHUCK TRUMBLE M.F.T.
Marriage & Family Therapist
3553 WHIPPLE ROAD
UNION CITY, CA 94587
Alameda County (510) 454-1000
MICHAEL P. HARDY M.D.
Dermatology
3553 WHIPPLE ROAD
UNION CITY, CA 94587
Alameda County (510) 454-1000
MICHELLE MINHCHAU DOAN PSYD
Psychologist (Clinical)
3553 WHIPPLE ROAD
SAN LEANDRO, CA 94587
Alameda County (510) 454-1000

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 Mary Hong's NPI number?

The NPI number for Mary Hong is 1861570624. It was assigned to this individual provider in the NPPES registry on November 1, 2006.

Where is Mary Hong located?

Mary Hong practices at 3553 Whipple Road, San Leandro, CA 94587. The listed phone number is (510) 454-1000.

What is Mary Hong's specialty?

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

Is Mary Hong enrolled in Medicare?

Yes. Mary Hong is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Mary Hong was last updated on February 2, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.