SENIOR DOC MARYLAND PC
NPI 1689551822
Family Medicine in Columbia, MD
About Senior Doc Maryland Pc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SENIOR DOC MARYLAND PC (NPI 1689551822) is a healthcare organization registered as a family medicine in Columbia, Maryland and active in the NPI registry since August 2025. The organization lists John Mark Geiss, Ceo, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Senior Doc Maryland Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
3Medicare enrollment records show 3 clinicians reassign Medicare billing to Senior Doc Maryland PC, which bills Medicare for the services they deliver. They are listed nearest first.
Clinicians, nearest first (3)
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 Senior Doc Maryland PC's NPI number?
The NPI number for Senior Doc Maryland PC is 1689551822. It was assigned to this organization in the NPPES registry on August 19, 2025.
Where is Senior Doc Maryland PC located?
Senior Doc Maryland PC is located at 6700 Alexander Bell Dr Ste 200, Columbia, MD 21046. The listed phone number is (855) 434-7763.
What is Senior Doc Maryland PC's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Senior Doc Maryland PC enrolled in Medicare?
Yes. Senior Doc Maryland PC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Senior Doc Maryland PC?
According to the CMS Revalidation Reassignment List (October 2026 release), 3 clinicians reassign their Medicare billing to Senior Doc Maryland PC, in Internal Medicine and Nurse Practitioner. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Senior Doc Maryland PC was last updated on August 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# Senior Doc Maryland Pc · NPI 1689551822
Family Medicine organization in Columbia, Maryland. Organization record, active in the CMS NPPES registry since August 19, 2025.
## Identity
- **NPI:** 1689551822 (Entity type: Organization)
- **Enumerated:** August 19, 2025
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **Organization subpart:** No
- **Authorized official:** John Geiss, CEO
## Practice location
- **Address:** 6700 ALEXANDER BELL DR STE 200, Columbia, MD 21046-2105
- **Phone:** (855) 434-7763
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 3 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (2), Internal Medicine (1) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 19, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1689551822) · Data from the CMS NPPES public registry.