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JUDY CHANG-WITT M.D.
NPI 1225326564
Internal Medicine in San Leandro, CA

Active since July 20, 2011PECOS EnrolledAccepts Medicare Assignment
2500 MERCED ST, SAN LEANDRO, CA 94577(510) 454-7300 Get Directions Write a Review

NPPES record last updated: January 11, 2022. Verified against the NPPES registry weekly; last sync: August 30, 2026.

Record update history: Jan 11, 2022, Jun 13, 2019 (2 updates tracked since 2019).

About Judy Chang-witt M.d. NPPES

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

JUDY CHANG-WITT M.D. (NPI 1225326564) is an individual internal medicine provider in San Leandro, California, licensed in Wisconsin (60317-20) and active in the NPI registry since July 2011. She is enrolled in Medicare PECOS and is a graduate of Northwestern University Feinberg Medical School (2011).

NPPES Registry Identity

NPI1225326564
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameJUDY CHANG-WITTCredential: M.D.
Location Address2500 MERCED STSan Leandro, CA 94577-4201
Mailing Address2500 Merced StSan Leandro, CA 94577-4201
Phone(510) 454-7300
Sole ProprietorNo
Medical School CMSNorthwestern University Feinberg Medical SchoolGraduated 2011
Enumeration DateJuly 20, 2011
Last NPPES UpdateJanuary 11, 20222 updates tracked since enumeration
✔ NPI 1225326564 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in WI · 60317-20
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.
2500 MERCED ST, San Leandro, CA 94577
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Other Names 1

Other Name (5)Judy Chang

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

Judy Chang-witt 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 ID2365665361
PECOS Enrollment IDI20201030001508
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 94577 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 20

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

DR. SHIENA SHARMA MD
Anesthesiology
2500 MERCED ST
SAN LEANDRO, CA 94577
Alameda County (510) 454-1000
ANTHONY MICHAEL BATTAGLIA RN
Registered Nurse
2500 MERCED ST
SAN LEANDRO, CA 94577
Alameda County (510) 454-1000
DR. ELIZABETH MACERA N.P.
Nurse Practitioner
2500 MERCED ST
SAN LEANDRO, CA 94577
Alameda County (510) 454-1000
MS. TSUI TAM PHARM. D.
Pharmacist
2500 MERCED ST
SAN LEANDRO, CA 94577
Alameda County (510) 454-2747
JEFFREY LI M.D.
Radiology (Diagnostic Radiology)
2500 MERCED ST
SAN LEANDRO, CA 94577
Alameda County (510) 737-3032
CHIN-HSIANG FENG
Emergency Medicine
2500 MERCED ST
SAN LEANDRO, CA 94577
Alameda County (510) 518-5598
MS. JESSICA RAE MARTINEZ CNM
Advanced Practice Midwife
2500 MERCED ST
SAN LEANDRO, CA 94577
Alameda County (925) 548-4751
DR. GRACE MINDY LEE M.D.
Emergency Medicine
2500 MERCED ST
SAN LEANDRO, CA 94577
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 Judy Chang-witt's NPI number?

The NPI number for Judy Chang-witt is 1225326564. It was assigned to this individual provider in the NPPES registry on July 20, 2011. The provider is also known as Judy Chang.

Where is Judy Chang-witt located?

Judy Chang-witt practices at 2500 Merced St, San Leandro, CA 94577. The listed phone number is (510) 454-7300.

What is Judy Chang-witt's specialty?

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

Is Judy Chang-witt enrolled in Medicare?

Yes. Judy Chang-witt 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 Judy Chang-witt was last updated on January 11, 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.