MARY GREHIAN YOO MD
NPI 1609935212
Internal Medicine in San Diego, CA
About Mary Grehian Yoo Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY GREHIAN YOO MD (NPI 1609935212) is an individual internal medicine provider in San Diego, California, licensed in California (A84430) and active in the NPI registry since December 2006. She is enrolled in Medicare PECOS and is a graduate of Northwestern University Feinberg Medical School (2002).
NPPES Registry Identity
Specialties & Licenses
Other Names 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
Mary Grehian Yoo 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92120 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN DIEGO, CA 92120
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 Yoo's NPI number?
The NPI number for Mary Yoo is 1609935212. It was assigned to this individual provider in the NPPES registry on December 8, 2006. The provider is also known as Mary Vartuhi Grehian MD.
Where is Mary Yoo located?
Mary Yoo practices at 4647 Zion Ave, San Diego, CA 92120. The listed phone number is (619) 528-5000.
What is Mary Yoo's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Mary Yoo enrolled in Medicare?
Yes. Mary Yoo 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 Mary Yoo was last updated on December 21, 2021. 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.
# Mary Grehian Yoo, MD · NPI 1609935212
Internal Medicine physician in San Diego, California. Individual provider, active in the CMS NPPES registry since December 8, 2006.
## Identity
- **NPI:** 1609935212 (Entity type: Individual)
- **Enumerated:** December 8, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A84430 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 4647 ZION AVE, San Diego, CA 92120-2507
- **Phone:** (619) 528-5000
## 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:** Northwestern University Feinberg Medical School, class of 2002
## Record status
- **NPPES last updated:** December 21, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1609935212) · Data from the CMS NPPES public registry.