WALTER GWANG-UP PARK M.D.
NPI 1538355672
Internal Medicine - Gastroenterology in Stanford, CA
About Walter Gwang-up Park M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WALTER GWANG-UP PARK M.D. (NPI 1538355672) is an individual gastroenterology provider in Stanford, California, licensed in California (A88008) and active in the NPI registry since September 2007. He is enrolled in Medicare PECOS and is a graduate of Johns Hopkins University School Of Medicine (2003).
NPPES Registry Identity
Specialties & Licenses
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
Walter Gwang-up Park 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.
Areas of Expertise CMS Part B claims 12
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.
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.
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 Walter Park's NPI number?
The NPI number for Walter Park is 1538355672. It was assigned to this individual provider in the NPPES registry on September 21, 2007.
Where is Walter Park located?
Walter Park practices at 300 Pasteur Dr, Stanford, CA 94305. The listed phone number is (650) 723-4000.
What is Walter Park's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Walter Park enrolled in Medicare?
Yes. Walter Park 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 Walter Park was last updated on August 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 days 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.
# Walter Gwang-Up Park, M.D. · NPI 1538355672
Gastroenterology physician in Stanford, California. Individual provider, active in the CMS NPPES registry since September 21, 2007.
## Identity
- **NPI:** 1538355672 (Entity type: Individual)
- **Enumerated:** September 21, 2007
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** A88008 (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
- **Medical school:** Johns Hopkins University School Of Medicine, class of 2003
## Record status
- **NPPES last updated:** August 24, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1538355672) · Data from the CMS NPPES public registry.