CARL J HAUSER M.D.
NPI 1831116425
Surgery - Surgical Critical Care in Sonora, CA
About Carl J Hauser M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CARL J HAUSER M.D. (NPI 1831116425) is an individual surgical critical care provider in Sonora, California, licensed in California (G40233) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Carl J Hauser M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Carl Hauser reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Sonora, CA 95370
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1033100854 (California)
- 172 clinicians in this Medicare group
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- 1,477 clinicians in this Medicare group
Boston, MA 02215
- Reassigned Medicare billing, Massachusetts enrollment
- 281 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.
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 Carl Hauser's NPI number?
The NPI number for Carl Hauser is 1831116425. It was assigned to this individual provider in the NPPES registry on July 17, 2006.
Where is Carl Hauser located?
Carl Hauser practices at 1000 Greenley Rd, Sonora, CA 95370. The listed phone number is (617) 632-9929.
What is Carl Hauser's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Surgical Critical Care, with taxonomy code 2086S0102X.
Is Carl Hauser enrolled in Medicare?
Yes. Carl Hauser is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Carl Hauser's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Carl Hauser reassigns Medicare benefits to 3 organizations: Sonora Community Hospital (Sonora, CA), Beth Israel Deaconess Medical Center, Inc. (Boston, MA) and Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc (Boston, MA). 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 Carl Hauser'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 Carl Hauser was last updated on August 27, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Carl J Hauser, M.D. · NPI 1831116425
Surgical Critical Care physician in Sonora, California. Individual provider, active in the CMS NPPES registry since July 17, 2006.
## Identity
- **NPI:** 1831116425 (Entity type: Individual)
- **Enumerated:** July 17, 2006
- **Primary specialty:** Surgery - Surgical Critical Care · taxonomy 2086S0102X
- **State license:** G40233 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1000 GREENLEY RD, Sonora, CA 95370-5200
- **Phone:** (617) 632-9929
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Sonora Community Hospital (NPI 1780673376, Sonora, CA); Beth Israel Deaconess Medical Center, Inc. (NPI 1548202641, Boston, MA); Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc (NPI 1720037385, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 27, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1831116425) · Data from the CMS NPPES public registry.