PMK MEDICAL GROUP, INC.
NPI 1962405860
Internal Medicine - Hematology & Oncology in Oxnard, CA
About Pmk Medical Group, Inc. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
PMK MEDICAL GROUP, INC. (NPI 1962405860), doing business as Ventura County Hematology Oncology Specialists, is a healthcare organization registered as a hematology & oncology in Oxnard, California and active in the NPI registry since May 2005. The organization holds 2 active CLIA laboratory certificates, maintains 2 additional practice locations, and lists Marissa Rivera, Finance & Quality Officer, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Secondary Practice Locations 2
Other Identifiers 4
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)
Pmk Medical Group, Inc. 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
7Medicare enrollment records show 7 clinicians reassign Medicare billing to Pmk Medical Group, Inc., which bills Medicare for the services they deliver. Of these, 3 practice at this address and 6 within 10 miles. They are listed nearest first.
Clinicians, nearest first (7)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
CLIA Laboratory Certificates CMS CLIA 2
Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.
Certificate of Accreditation 05D1086245
Pmk Medical Group Inc · Camarillo, CACertificate of Accreditation 05D0583884
Pmk Medical Group Inc Dba Ventura County Hematology Oncology Specialist · Oxnard, CAFrequently 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 Pmk Medical Group, Inc.'s NPI number?
The NPI number for Pmk Medical Group, Inc. is 1962405860. It was assigned to this organization in the NPPES registry on May 24, 2005. The provider is doing business as Ventura County Hematology Oncology Specialists.
Where is Pmk Medical Group, Inc. located?
Pmk Medical Group, Inc. is located at 1700 N Rose Ave Ste 320, Oxnard, CA 93030. The listed phone number is (805) 485-8709.
What is Pmk Medical Group, Inc.'s specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is Pmk Medical Group, Inc. enrolled in Medicare?
Yes. Pmk Medical Group, Inc. is registered in the Medicare PECOS enrollment system.
When is Pmk Medical Group, Inc.'s Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare DME enrollment for this organization (California, Physician - Hematology/Oncology) 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 Pmk Medical Group, Inc.?
According to the CMS Revalidation Reassignment List (October 2026 release), 7 clinicians in 2 Medicare specialties reassign their Medicare billing to Pmk Medical Group, Inc.. 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 Hematology/Oncology (6) and Internal Medicine (1). Of these, 3 practice at this address and 6 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Does Pmk Medical Group, Inc. hold CLIA laboratory certificates?
Yes. 2 active CLIA laboratory certificates are associated with this NPI under the federal Clinical Laboratory Improvement Amendments program. The certificates are listed in the CLIA Laboratory Certificates section above.
What insurance does Pmk Medical Group, Inc. accept?
Health plans from Alliant Health Plans, Inc., Ambetter Health, Ambetter Health of Delaware, Ambetter from Absolute Total Care and Ambetter from Arkansas Health & Wellness and 36 other insurers list Pmk Medical Group, Inc. 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 Pmk Medical Group, Inc. was last updated on May 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months 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.
# Pmk Medical Group, Inc. · NPI 1962405860
Hematology & Oncology organization in Oxnard, California. Organization record, active in the CMS NPPES registry since May 24, 2005.
## Identity
- **NPI:** 1962405860 (Entity type: Organization)
- **Enumerated:** May 24, 2005
- **Primary specialty:** Internal Medicine - Hematology & Oncology · taxonomy 207RH0003X
- **Also known as:** Ventura County Hematology Oncology Specialists (Doing Business As)
- **Organization subpart:** No
- **Authorized official:** Marissa Rivera, FINANCE & QUALITY OFFICER
## Practice location
- **Address:** 1700 N ROSE AVE STE 320, Oxnard, CA 93030-7648
- **Phone:** (805) 485-8709 · **Fax:** (805) 485-5521
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** October 31, 2026 (DME, California, Physician - Hematology/Oncology) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 7 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Hematology/Oncology (6), Internal Medicine (1); 3 practice at this address and 6 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 11, 2026
- **Other identifiers:** Medicaid GR0064440 (CA); Other ZZZ45387Z (CA); Other 5628497 (CA); and 1 more
- **CLIA laboratory certificates:** 2 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1962405860) · Data from the CMS NPPES public registry.