RUTH M. JACOBS, MD, LLC
NPI 1588019079
Internal Medicine - Infectious Disease in Rockville, MD
About Ruth M. Jacobs, Md, Llc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RUTH M. JACOBS, MD, LLC (NPI 1588019079) is a healthcare organization registered as an infectious disease in Rockville, Maryland and active in the NPI registry since May 2016. The organization lists Ruth Marie Jacobs, Owner, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
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)
Ruth M. Jacobs, Md, Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Ruth M. Jacobs, MD, LLC, which bills Medicare for the services this clinician delivers.
Clinician (1)
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 Ruth M. Jacobs, MD, LLC's NPI number?
The NPI number for Ruth M. Jacobs, MD, LLC is 1588019079. It was assigned to this organization in the NPPES registry on May 3, 2016.
Where is Ruth M. Jacobs, MD, LLC located?
Ruth M. Jacobs, MD, LLC is located at 9420 Key West Ave Suite 202, Rockville, MD 20850. The listed phone number is (301) 315-9515.
What is Ruth M. Jacobs, MD, LLC's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.
Is Ruth M. Jacobs, MD, LLC enrolled in Medicare?
Yes. Ruth M. Jacobs, MD, LLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Ruth M. Jacobs, MD, LLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Infectious Disease) reassigns their Medicare billing to Ruth M. Jacobs, MD, LLC. 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 Ruth M. Jacobs, MD, LLC was last updated on May 3, 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.
# Ruth M. Jacobs, Md, Llc · NPI 1588019079
Infectious Disease organization in Rockville, Maryland. Organization record, active in the CMS NPPES registry since May 3, 2016.
## Identity
- **NPI:** 1588019079 (Entity type: Organization)
- **Enumerated:** May 3, 2016
- **Primary specialty:** Internal Medicine - Infectious Disease · taxonomy 207RI0200X
- **Organization subpart:** No
- **Authorized official:** Ruth Jacobs, OWNER
## Practice location
- **Address:** 9420 KEY WEST AVE, SUITE 202, Rockville, MD 20850-3334
- **Phone:** (301) 315-9515
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Infectious Disease) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 3, 2016
- **Other identifiers:** Medicare UPIN F05452 (MD); Medicaid 756621200 (MD)
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Source: [NPI Profile](https://npiprofile.com/npi/1588019079) · Data from the CMS NPPES public registry.