JUDY MARY CHENG MD
NPI 1568577906
Internal Medicine - Hematology in Stanford, CA
About Judy Mary Cheng Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JUDY MARY CHENG MD (NPI 1568577906) is an individual hematology provider in Stanford, California, licensed in California (A76724) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS and is a graduate of Other (1998).
NPPES Registry Identity
Specialties & Licenses 4
Other Identifiers 1
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
Judy Mary Cheng 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.
Medicare Billing Reassignments
2Medicare enrollment records show Judy Cheng reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Palo Alto, CA 94301
- Reassigned Medicare billing, California enrollment
- 4,479 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1326013442 (California)
- 637 clinicians in this Medicare group
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 94305 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
STANFORD, CA 94305
STANFORD, CA 94305
STANFORD, CA 94305
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 Cheng's NPI number?
The NPI number for Judy Cheng is 1568577906. It was assigned to this individual provider in the NPPES registry on August 19, 2006.
Where is Judy Cheng located?
Judy Cheng practices at 300 Pasteur Dr, Stanford, CA 94305. The listed phone number is (650) 723-4000.
What is Judy Cheng's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology, with taxonomy code 207RH0000X.
Is Judy Cheng enrolled in Medicare?
Yes. Judy Cheng 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 organizations bill Medicare for Judy Cheng's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Judy Cheng reassigns Medicare benefits to 2 organizations: Sutter Bay Medical Foundation (Palo Alto, CA) and University Of California Sfgh Medical Group (San Francisco, CA). Each 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 Judy Cheng'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 Judy Cheng was last updated on March 5, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 months 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.
# Judy Mary Cheng, MD · NPI 1568577906
Hematology physician in Stanford, California. Individual provider, active in the CMS NPPES registry since August 19, 2006.
## Identity
- **NPI:** 1568577906 (Entity type: Individual)
- **Enumerated:** August 19, 2006
- **Primary specialty:** Internal Medicine - Hematology · taxonomy 207RH0000X
- **State license:** A76724 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 PASTEUR DR, Stanford, CA 94305-2200
- **Phone:** (650) 723-4000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Sutter Bay Medical Foundation (NPI 1013950807, Palo Alto, CA); University Of California Sfgh Medical Group (NPI 1265407381, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1998
## Record status
- **NPPES last updated:** March 5, 2025
- **Other identifiers:** Medicaid 00A767240 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1568577906) · Data from the CMS NPPES public registry.