BYUNG DON AHN MD
NPI 1194715193
Internal Medicine - Cardiovascular Disease in Upland, CA
About Byung Don Ahn Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
BYUNG DON AHN MD (NPI 1194715193) is an individual cardiovascular disease provider in Upland, California, licensed in California (A39266) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, maintains a secondary practice location in Upland, and is a graduate of Other (1978).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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
Byung Don Ahn 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.
Areas of Expertise CMS Part B claims 24
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 91786 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
UPLAND, CA 91786
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 Byung Ahn's NPI number?
The NPI number for Byung Ahn is 1194715193. It was assigned to this individual provider in the NPPES registry on October 21, 2005.
Where is Byung Ahn located?
Byung Ahn practices at 685 N 13th Ave Ste 1, Upland, CA 91786. The listed phone number is (909) 500-8683.
What is Byung Ahn's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is Byung Ahn enrolled in Medicare?
Yes. Byung Ahn 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 Byung Ahn was last updated on March 25, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.