MONICA SEUNGAH CHOO MD
NPI 1326673401
Obstetrics & Gynecology - Obstetrics in Pleasanton, CA
About Monica Seungah Choo Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MONICA SEUNGAH CHOO MD (NPI 1326673401) is an individual obstetrics provider in Pleasanton, California, licensed in California (A183563) and active in the NPI registry since March 2020. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of University Of Michigan Medical School (2021).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
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
Monica Seungah Choo 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 Reassignment
Medicare enrollment records show Monica Choo reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Newark, CA 94560
- Reassigned Medicare billing, California enrollment
- 435 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 94566 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 9
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Monica Choo's NPI number?
The NPI number for Monica Choo is 1326673401. It was assigned to this individual provider in the NPPES registry on March 9, 2020.
Where is Monica Choo located?
Monica Choo practices at 4725 1st St Ste 100, Pleasanton, CA 94566. The listed phone number is (925) 734-3333.
What is Monica Choo's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Obstetrics, with taxonomy code 207VX0000X.
Is Monica Choo enrolled in Medicare?
Yes. Monica Choo 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 organization bills Medicare for Monica Choo's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Monica Choo reassigns Medicare benefits to University Healthcare Alliance (Newark, CA). The 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 Monica Choo'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 Monica Choo was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Monica Seungah Choo, MD · NPI 1326673401
Obstetrics physician in Pleasanton, California. Individual provider, active in the CMS NPPES registry since March 9, 2020.
## Identity
- **NPI:** 1326673401 (Entity type: Individual)
- **Enumerated:** March 9, 2020
- **Primary specialty:** Obstetrics & Gynecology - Obstetrics · taxonomy 207VX0000X
- **State license:** A183563 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 4725 1ST ST STE 100, Pleasanton, CA 94566-7366
- **Phone:** (925) 734-3333
## 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:** University Healthcare Alliance (NPI 1760531198, Newark, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Michigan Medical School, class of 2021
## Record status
- **NPPES last updated:** September 11, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1326673401) · Data from the CMS NPPES public registry.