MORRIS TOBIAS GRABIE MD
NPI 1659399681
Internal Medicine - Nephrology in Santa Monica, CA
About Morris Tobias Grabie Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MORRIS TOBIAS GRABIE MD (NPI 1659399681) is an individual nephrology provider in Santa Monica, California, licensed in California (G34196) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Advanced Dallas Hospitals And Clinics, and is a graduate of Albert Einstein College Of Medicine Of Yeshiva University (1972).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 6
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
Morris Tobias Grabie 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 Morris Grabie reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Houston, TX 77027
- Reassigned Medicare billing, Texas enrollment
- 139 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Advanced Dallas Hospitals And Clinics
Acute Care Hospitals · Dallas, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 90404 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 8
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SANTA MONICA, CA 90404
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 Morris Grabie's NPI number?
The NPI number for Morris Grabie is 1659399681. It was assigned to this individual provider in the NPPES registry on July 17, 2006.
Where is Morris Grabie located?
Morris Grabie practices at 1301 20th St Ste 200, Santa Monica, CA 90404. The listed phone number is (310) 829-3639.
What is Morris Grabie's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is Morris Grabie enrolled in Medicare?
Yes. Morris Grabie 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 Morris Grabie's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Morris Grabie reassigns Medicare benefits to Advanced Surgeons & Physicians Network, Inc. (Houston, TX). 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 Morris Grabie's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Morris Grabie accept?
Health plans from Antidote Health of TX list Morris Grabie 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.
Is Morris Grabie affiliated with any hospitals?
According to CMS data, Morris Grabie is affiliated with Advanced Dallas Hospitals And Clinics.
When was this NPI record last updated?
The NPPES record for Morris Grabie was last updated on March 12, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Morris Tobias Grabie, MD · NPI 1659399681
Nephrology physician in Santa Monica, California. Individual provider, active in the CMS NPPES registry since July 17, 2006.
## Identity
- **NPI:** 1659399681 (Entity type: Individual)
- **Enumerated:** July 17, 2006
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **State license:** G34196 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1301 20TH ST STE 200, Santa Monica, CA 90404-2088
- **Phone:** (310) 829-3639 · **Fax:** (310) 453-4167
## 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:** Advanced Surgeons & Physicians Network, Inc. (NPI 1508030917, Houston, TX), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Albert Einstein College Of Medicine Of Yeshiva University, class of 1972
## Record status
- **NPPES last updated:** March 12, 2008
- **Other identifiers:** Other ZZZ24192Z (CA); Medicare PIN WG34196C (CA); Medicare UPIN A45825 (CA); and 3 more
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Source: [NPI Profile](https://npiprofile.com/npi/1659399681) · Data from the CMS NPPES public registry.