MEDICAL SPECIALISTS ASSOCIATES PC
NPI 1326404948
Anesthesiology in Clearlake, CA
About Medical Specialists Associates Pc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MEDICAL SPECIALISTS ASSOCIATES PC (NPI 1326404948) is a healthcare organization registered as an anesthesiology in Clearlake, California and active in the NPI registry since January 2016. The organization maintains 9 additional practice locations and lists Christopher Voscopoulos, Owner, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 10
Secondary Practice Locations 9
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Medical Specialists Associates Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by October 31, 2026
Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.
Clinicians Billing Medicare Through This Organization
10Medicare enrollment records show 10 clinicians reassign Medicare billing to Medical Specialists Associates PC, which bills Medicare for the services they deliver. Of these, 1 practice at this address. They are listed nearest first.
Clinicians by Medicare Specialty 3
Clinicians, nearest first (10)
Los Angeles, CA 90073
Brockton, MA 02302
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Medical Specialists Associates PC's NPI number?
The NPI number for Medical Specialists Associates PC is 1326404948. It was assigned to this organization in the NPPES registry on January 12, 2016.
Where is Medical Specialists Associates PC located?
Medical Specialists Associates PC is located at 15630 18th Ave, Clearlake, CA 95422. The listed phone number is (707) 994-6486.
What is Medical Specialists Associates PC's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Medical Specialists Associates PC enrolled in Medicare?
Yes. Medical Specialists Associates PC is registered in the Medicare PECOS enrollment system.
When is Medical Specialists Associates PC's Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (Arizona, Clinic/Group Practice) is due for revalidation by October 31, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.
How many clinicians bill Medicare through Medical Specialists Associates PC?
According to the CMS Revalidation Reassignment List (October 2026 release), 10 clinicians in 3 Medicare specialties reassign their Medicare billing to Medical Specialists Associates PC. A 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 the clinician's services. The largest specialties are Anesthesiology (5), Critical Care (Intensivists) (4) and Internal Medicine (1). Of these, 1 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Medical Specialists Associates PC accept?
Health plans from Anthem Blue Cross and Blue Shield list Medical Specialists Associates PC 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.
When was this NPI record last updated?
The NPPES record for Medical Specialists Associates PC was last updated on March 29, 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.
# Medical Specialists Associates Pc · NPI 1326404948
Anesthesiology organization in Clearlake, California. Organization record, active in the CMS NPPES registry since January 12, 2016.
## Identity
- **NPI:** 1326404948 (Entity type: Organization)
- **Enumerated:** January 12, 2016
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **Organization subpart:** No
- **Authorized official:** Christopher Voscopoulos, OWNER
## Practice location
- **Address:** 15630 18TH AVE, Clearlake, CA 95422-9336
- **Phone:** (707) 994-6486
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** October 31, 2026 (Non-DME Part B, Arizona, Clinic/Group Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 10 clinicians in 3 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Anesthesiology (5), Critical Care (Intensivists) (4), Internal Medicine (1); 1 practice at this address · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 29, 2024
---
Source: [NPI Profile](https://npiprofile.com/npi/1326404948) · Data from the CMS NPPES public registry.