MR. GRANT HOLZ MD
NPI 1083979710
Radiology - Diagnostic Radiology in San Diego, CA
About Mr. Grant Holz Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. GRANT HOLZ MD (NPI 1083979710) is an individual diagnostic radiology provider in San Diego, California, licensed in Illinois (125061867) and active in the NPI registry since July 2012. He is enrolled in Medicare PECOS, is affiliated with Emanuel Medical Center, and is a graduate of University Of Texas Medical School At Houston (2012).
NPPES Registry Identity
Specialties & Licenses
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
Mr. Grant Holz 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 Reassignments
26Medicare enrollment records show Grant Holz reassigns Medicare billing to 26 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Glendale, CA 91210
- Reassigned Medicare billing, California and Texas enrollments
- 15 clinicians in this Medicare group
San Andreas, CA 95249
- Reassigned Medicare billing, California enrollment
- 57 clinicians in this Medicare group
Stockton, CA 95204
- Reassigned Medicare billing, California enrollment
- 110 clinicians in this Medicare group
Fall River Mills, CA 96028
- Reassigned Medicare billing, California enrollment
- 33 clinicians in this Medicare group
Denver City, TX 79323
- Reassigned Medicare billing, Texas enrollment
- 60 clinicians in this Medicare group
Lubbock, TX 79415
- Reassigned Medicare billing, Texas enrollment
- 101 clinicians in this Medicare group
Stanton, TX 79782
- Reassigned Medicare billing, Texas enrollment
- 91 clinicians in this Medicare group
Rotan, TX 79546
- Reassigned Medicare billing, Texas enrollment
- Also billed through NPI 1598746703 (Texas)
- 106 clinicians in this Medicare group
Comanche, TX 76442
- Reassigned Medicare billing, Texas enrollment
- 100 clinicians in this Medicare group
San Antonio, TX 78240
- Reassigned Medicare billing, California enrollment
- 5 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 41
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.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Emanuel Medical Center
Acute Care Hospitals · Swainsboro, GABrownfield Regional Medical Center
Acute Care Hospitals · Brownfield, TXWilson N Jones Regional Medical Center
Acute Care Hospitals · Sherman, TXLake Granbury Medical Center
Acute Care Hospitals · Granbury, TXHaskell Memorial Hospital
Critical Access Hospitals · Haskell, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92103 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Grant Holz's NPI number?
The NPI number for Grant Holz is 1083979710. It was assigned to this individual provider in the NPPES registry on July 9, 2012.
Where is Grant Holz located?
Grant Holz practices at 3534 5th Ave Apt 206, San Diego, CA 92103. The listed phone number is (877) 737-4636.
What is Grant Holz's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Grant Holz enrolled in Medicare?
Yes. Grant Holz 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 organizations bill Medicare for Grant Holz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Grant Holz reassigns Medicare benefits to 26 organizations: Vesta Telemedicine Solutions, PLLC (Glendale, CA), Radiologica Inc. (San Andreas, CA), Advanced Radiology And Interventional Associates Inc (Stockton, CA), Mayers Memorial Hospital District (Fall River Mills, CA), County Of Yoakum (Denver City, TX) and 21 more organizations, listed in the Medicare section above. 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 Grant Holz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Grant Holz accept?
Health plans from Baylor Scott and White Health Plan, Blue Cross and Blue Shield of Texas, Oscar Insurance Company, UnitedHealthcare and Wellmark Health Plan of Iowa, Inc. list Grant Holz 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 Grant Holz affiliated with any hospitals?
According to CMS data, Grant Holz is affiliated with Emanuel Medical Center, Brownfield Regional Medical Center, Wilson N Jones Regional Medical Center, Lake Granbury Medical Center and Haskell Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Grant Holz was last updated on October 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 days 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.
# Mr. Grant Holz, MD · NPI 1083979710
Diagnostic Radiology physician in San Diego, California. Individual provider, active in the CMS NPPES registry since July 9, 2012.
## Identity
- **NPI:** 1083979710 (Entity type: Individual)
- **Enumerated:** July 9, 2012
- **Primary specialty:** Radiology - Diagnostic Radiology · taxonomy 2085R0202X
- **State license:** 125061867 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 3534 5TH AVE APT 206, San Diego, CA 92103-5063
- **Phone:** (877) 737-4636
## 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:** 26 organizations under Medicare reassignment (form CMS-855R): Vesta Telemedicine Solutions, PLLC (NPI 1952902116, Glendale, CA); Radiologica Inc. (NPI 1073000105, San Andreas, CA); Advanced Radiology And Interventional Associates Inc (NPI 1669123626, Stockton, CA); Mayers Memorial Hospital District (NPI 1912125667, Fall River Mills, CA); County Of Yoakum (NPI 1417692450, Denver City, TX); and 21 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Texas Medical School At Houston, class of 2012
## Record status
- **NPPES last updated:** October 13, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1083979710) · Data from the CMS NPPES public registry.