DR. RYAN MARTIN MD
NPI 1821300583
Psychiatry & Neurology - Neurocritical Care in Sacramento, CA
About Dr. Ryan Martin Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. RYAN MARTIN MD (NPI 1821300583) is an individual neurocritical care provider in Sacramento, California, licensed in California (A118481) and active in the NPI registry since July 2010. He is enrolled in Medicare PECOS and is a graduate of University Of California, Geffen School Of Medicine (2010).
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. Ryan Martin 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 Ryan Martin reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Sacramento, CA 95817
- Reassigned Medicare billing, California enrollment
- 2,570 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 9
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.
SACRAMENTO, CA 95817
SACRAMENTO, CA 95817
SACRAMENTO, CA 95817
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 Ryan Martin's NPI number?
The NPI number for Ryan Martin is 1821300583. It was assigned to this individual provider in the NPPES registry on July 10, 2010.
Where is Ryan Martin located?
Ryan Martin practices at 4860 Y St Suite 3740 Acc, Sacramento, CA 95817. The listed phone number is (916) 734-8648.
What is Ryan Martin's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurocritical Care, with taxonomy code 2084A2900X.
Is Ryan Martin enrolled in Medicare?
Yes. Ryan Martin 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 Ryan Martin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ryan Martin reassigns Medicare benefits to Regents Of The Univ Of Ca (Sacramento, 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 Ryan Martin'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 Ryan Martin was last updated on October 5, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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. Ryan Martin, MD · NPI 1821300583
Neurocritical Care physician in Sacramento, California. Individual provider, active in the CMS NPPES registry since July 10, 2010.
## Identity
- **NPI:** 1821300583 (Entity type: Individual)
- **Enumerated:** July 10, 2010
- **Primary specialty:** Psychiatry & Neurology - Neurocritical Care · taxonomy 2084A2900X
- **State license:** A118481 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 4860 Y ST, SUITE 3740 ACC, Sacramento, CA 95817-2307
- **Phone:** (916) 734-8648
## 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:** Regents Of The Univ Of Ca (NPI 1285068783, Sacramento, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, Geffen School Of Medicine, class of 2010
## Record status
- **NPPES last updated:** October 5, 2016
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Source: [NPI Profile](https://npiprofile.com/npi/1821300583) · Data from the CMS NPPES public registry.