ISABELLE MARIE KLEIER MD
NPI 1992200638
Obstetrics & Gynecology in Los Angeles, CA
About Isabelle Marie Kleier Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ISABELLE MARIE KLEIER MD (NPI 1992200638) is an individual obstetrics & gynecology provider in Los Angeles, California, licensed in California (A182532) and active in the NPI registry since March 2018. She is enrolled in Medicare PECOS and is a graduate of Tulane University School Of Medicine (2018).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Accepted Insurance
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
Isabelle Marie Kleier 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 Isabelle Kleier reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Stamford, CT 06901
- Reassigned Medicare billing, Connecticut enrollment
- 132 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 90027 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.
LOS ANGELES, CA 90027
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 Isabelle Kleier's NPI number?
The NPI number for Isabelle Kleier is 1992200638. It was assigned to this individual provider in the NPPES registry on March 26, 2018.
Where is Isabelle Kleier located?
Isabelle Kleier practices at 1300 N Vermont Ave, Los Angeles, CA 90027. The listed phone number is (786) 239-9296.
What is Isabelle Kleier's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Isabelle Kleier enrolled in Medicare?
Yes. Isabelle Kleier 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 Isabelle Kleier's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Isabelle Kleier reassigns Medicare benefits to Optimus Health Care (Stamford, CT). 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 Isabelle Kleier's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Isabelle Kleier accept?
Health plans from Anthem Blue Cross and Blue Shield list Isabelle Kleier as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Isabelle Kleier was last updated on September 5, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Isabelle Marie Kleier, MD · NPI 1992200638
Obstetrics & Gynecology physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since March 26, 2018.
## Identity
- **NPI:** 1992200638 (Entity type: Individual)
- **Enumerated:** March 26, 2018
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** A182532 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1300 N VERMONT AVE, Los Angeles, CA 90027-6098
- **Phone:** (786) 239-9296
## 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:** Optimus Health Care (NPI 1942574082, Stamford, CT), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Tulane University School Of Medicine, class of 2018
## Record status
- **NPPES last updated:** September 5, 2023
- **Other identifiers:** Medicaid 872657977 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1992200638) · Data from the CMS NPPES public registry.