MARK D COOK, MD, INC
NPI 1588927628
Family Medicine in Oakdale, CA
About Mark D Cook, Md, Inc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK D COOK, MD, INC (NPI 1588927628), doing business as Mark D Cook, Md, is a healthcare organization registered as a family medicine in Oakdale, California and active in the NPI registry since June 2012. The organization lists Mark Daniel Cook, Owner, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Other Identifiers 1
Group Practice 1
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)
Mark D Cook, Md, Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by March 31, 2027
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
2Medicare enrollment records show 2 clinicians reassign Medicare billing to Mark D Cook, MD, Inc, which bills Medicare for the services they deliver. Of these, 1 practice at this address. They are listed nearest first.
Clinicians, nearest first (2)
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 Mark D Cook, MD, Inc's NPI number?
The NPI number for Mark D Cook, MD, Inc is 1588927628. It was assigned to this organization in the NPPES registry on June 22, 2012. The provider was formerly known as Mark D Cook, MD.
Where is Mark D Cook, MD, Inc located?
Mark D Cook, MD, Inc is located at 1425 W H St Ste 200, Oakdale, CA 95361. The listed phone number is (209) 848-1005.
What is Mark D Cook, MD, Inc's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Mark D Cook, MD, Inc enrolled in Medicare?
Yes. Mark D Cook, MD, Inc is registered in the Medicare PECOS enrollment system.
When is Mark D Cook, MD, Inc'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 (California, Clinic/Group Practice) is due for revalidation by March 31, 2027. 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 Mark D Cook, MD, Inc?
According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians reassign their Medicare billing to Mark D Cook, MD, Inc, in Family Practice and General Practice. 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. Of these, 1 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Mark D Cook, MD, Inc was last updated on February 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Mark D Cook, Md, Inc · NPI 1588927628
Family Medicine organization in Oakdale, California. Organization record, active in the CMS NPPES registry since June 22, 2012.
## Identity
- **NPI:** 1588927628 (Entity type: Organization)
- **Enumerated:** June 22, 2012
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **Also known as:** Mark D Cook, MD (Former Legal Business Name)
- **Organization subpart:** No
- **Authorized official:** Mark Cook, OWNER
## Practice location
- **Address:** 1425 W H ST, STE 200, Oakdale, CA 95361-3588
- **Phone:** (209) 848-1005 · **Fax:** (209) 845-8918
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** March 31, 2027 (Non-DME Part B, California, Clinic/Group Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 2 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Family Practice (1), General Practice (1); 1 practice at this address · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 25, 2025
- **Other identifiers:** Medicaid 00A609650 (CA)
---
Source: [NPI Profile](https://npiprofile.com/npi/1588927628) · Data from the CMS NPPES public registry.