ALEXANDER STEPHEN GROHMANN
NPI 1922532720
Emergency Medicine in Los Angeles, CA
About Alexander Stephen Grohmann NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALEXANDER STEPHEN GROHMANN (NPI 1922532720) is an individual emergency medicine provider in Los Angeles, California, licensed in California (A158886) and active in the NPI registry since April 2017. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
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 (PECOS)
Alexander Stephen Grohmann is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
4Medicare enrollment records show Alexander Grohmann reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Los Angeles, CA 90095
- Reassigned Medicare billing, California enrollment
- 135 clinicians in this Medicare group
Los Angeles, CA 90015
- Reassigned Medicare billing, California enrollment
- 169 clinicians in this Medicare group
Lancaster, CA 93534
- Reassigned Medicare billing, California enrollment
- 22 clinicians in this Medicare group
Oak Brook, IL 60523
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: Rush University Medical Group
- 2,169 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.
Areas of Expertise CMS Part B claims 3
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 90095 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.
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 Alexander Grohmann's NPI number?
The NPI number for Alexander Grohmann is 1922532720. It was assigned to this individual provider in the NPPES registry on April 18, 2017.
Where is Alexander Grohmann located?
Alexander Grohmann practices at 757 Westwood Plz Ste 1517, Los Angeles, CA 90095. The listed phone number is (310) 825-9111.
What is Alexander Grohmann's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Alexander Grohmann enrolled in Medicare?
Yes. Alexander Grohmann is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Alexander Grohmann's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alexander Grohmann reassigns Medicare benefits to 4 organizations: Regents Of The Univ Of Ca Emer Med (Los Angeles, CA), Golden State Emergency Physicians Inc (Los Angeles, CA), Av Critical Care Inc (Lancaster, CA) and Rush University Medical Center (Oak Brook, IL). Each 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 Alexander Grohmann'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 Alexander Grohmann was last updated on August 11, 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.
# Alexander Stephen Grohmann · NPI 1922532720
Emergency Medicine physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since April 18, 2017.
## Identity
- **NPI:** 1922532720 (Entity type: Individual)
- **Enumerated:** April 18, 2017
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A158886 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 757 WESTWOOD PLZ STE 1517, Los Angeles, CA 90095-3828
- **Phone:** (310) 825-9111
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Regents Of The Univ Of Ca Emer Med (NPI 1104889138, Los Angeles, CA); Golden State Emergency Physicians Inc (NPI 1770886558, Los Angeles, CA); Av Critical Care Inc (NPI 1144723800, Lancaster, CA); Rush University Medical Center (NPI 1801375696, Oak Brook, IL) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 11, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1922532720) · Data from the CMS NPPES public registry.