DR. MICHAEL JAMES GUICE MD
NPI 1215944285
General Practice in Los Angeles, CA
About Dr. Michael James Guice Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MICHAEL JAMES GUICE MD (NPI 1215944285) is an individual general practice provider in Los Angeles, California, licensed in California (933573) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Illinois College Of Med (chi/peor/rock/chm-urb) (1975).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 4
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
Dr. Michael James Guice 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 Michael Guice reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Los Angeles, CA 90017
- Reassigned Medicare billing, California enrollment
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 2
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.
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 90017
LOS ANGELES, CA 90017
LOS ANGELES, CA 90017
LOS ANGELES, CA 90017
LOS ANGELES, CA 90017
LOS ANGELES, CA 90017
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 Michael Guice's NPI number?
The NPI number for Michael Guice is 1215944285. It was assigned to this individual provider in the NPPES registry on August 2, 2006.
Where is Michael Guice located?
Michael Guice practices at 1127 Wilshire Blvd # 1509, Los Angeles, CA 90017. The listed phone number is (213) 482-8600.
What is Michael Guice's specialty?
The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.
Is Michael Guice enrolled in Medicare?
Yes. Michael Guice 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 Michael Guice's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Guice reassigns Medicare benefits to Michael Guice MD Inc (Los Angeles, CA). 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 Michael Guice'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 Michael Guice was last updated on September 8, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.
# Dr. Michael James Guice, MD · NPI 1215944285
General Practice physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since August 2, 2006.
## Identity
- **NPI:** 1215944285 (Entity type: Individual)
- **Enumerated:** August 2, 2006
- **Primary specialty:** General Practice · taxonomy 208D00000X
- **State license:** 933573 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1127 WILSHIRE BLVD, # 1509, Los Angeles, CA 90017
- **Phone:** (213) 482-8600 · **Fax:** (213) 482-8222
## 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:** Michael Guice MD Inc (NPI 1215293303, Los Angeles, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Illinois College Of Med, class of 1975
## Record status
- **NPPES last updated:** September 8, 2010
- **Other identifiers:** Medicaid 00G33573 (CA); Medicare ID-Type Unspecified G33573 (CA); Medicare UPIN A91525; and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1215944285) · Data from the CMS NPPES public registry.