DR. MICHAEL DUANE STONE D.O.
NPI 1629305479
Family Medicine - Addiction Medicine in Norwalk, CA
About Dr. Michael Duane Stone D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MICHAEL DUANE STONE D.O. (NPI 1629305479) is an individual addiction medicine provider in Norwalk, California, licensed in California (20A5348) and active in the NPI registry since November 2009. He is enrolled in Medicare PECOS and is a graduate of Other (1986).
NPPES Registry Identity
Specialties & Licenses 2
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 Duane Stone D.o. 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
4Medicare enrollment records show Michael Stone reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Norwalk, CA 90650
- Reassigned Medicare billing, California enrollment
- 47 clinicians in this Medicare group
Tustin, CA 92780
- Reassigned Medicare billing, California enrollment
- 121 clinicians in this Medicare group
Burbank, CA 91506
- Reassigned Medicare billing, California enrollment
- 2 clinicians in this Medicare group
Hemet, CA 92543
- Reassigned Medicare billing, California enrollment
- 129 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 90650 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
NORWALK, CA 90650
NORWALK, CA 90650
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 Stone's NPI number?
The NPI number for Michael Stone is 1629305479. It was assigned to this individual provider in the NPPES registry on November 13, 2009.
Where is Michael Stone located?
Michael Stone practices at 13100 Studebaker Rd, Norwalk, CA 90650. The listed phone number is (562) 864-6377.
What is Michael Stone's specialty?
The primary specialty registered for this NPI is Family Medicine, specializing in Addiction Medicine, with taxonomy code 207QA0401X.
Is Michael Stone enrolled in Medicare?
Yes. Michael Stone 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 Michael Stone's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Stone reassigns Medicare benefits to 4 organizations: Coast Plaza Emergency Physicians Group Inc (Norwalk, CA), Can Emergency Physicians Medical Group Inc (Tustin, CA), Medxcel Group (Burbank, CA) and Apex Emergency Medical Group, Inc. (Hemet, CA). 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 Michael Stone'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 Stone was last updated on June 17, 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.
# Dr. Michael Duane Stone, D.O. · NPI 1629305479
Addiction Medicine physician in Norwalk, California. Individual provider, active in the CMS NPPES registry since November 13, 2009.
## Identity
- **NPI:** 1629305479 (Entity type: Individual)
- **Enumerated:** November 13, 2009
- **Primary specialty:** Family Medicine - Addiction Medicine · taxonomy 207QA0401X
- **State license:** 20A5348 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 13100 STUDEBAKER RD, Norwalk, CA 90650-2531
- **Phone:** (562) 864-6377
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Coast Plaza Emergency Physicians Group Inc (NPI 1912308446, Norwalk, CA); Can Emergency Physicians Medical Group Inc (NPI 1386018356, Tustin, CA); Medxcel Group (NPI 1891589503, Burbank, CA); Apex Emergency Medical Group, Inc. (NPI 1265711089, Hemet, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1986
## Record status
- **NPPES last updated:** June 17, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1629305479) · Data from the CMS NPPES public registry.