RUBEN J NAZARIO MD
NPI 1699756627
Pediatrics in Westminster, MD
About Ruben J Nazario Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RUBEN J NAZARIO MD (NPI 1699756627) is an individual pediatrics provider in Westminster, Maryland, licensed in Maryland (D0072015) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Ruben J Nazario Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Ruben Nazario reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Walkersville, MD 21793
- Reassigned Medicare billing, Maryland enrollment
- 270 clinicians in this Medicare group
Frederick, MD 21701
- Reassigned Medicare billing, Maryland enrollment
- 91 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21157 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WESTMINSTER, MD 21157
WESTMINSTER, MD 21157
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 Ruben Nazario's NPI number?
The NPI number for Ruben Nazario is 1699756627. It was assigned to this individual provider in the NPPES registry on November 8, 2005.
Where is Ruben Nazario located?
Ruben Nazario practices at 200 Memorial Ave, Westminster, MD 21157. The listed phone number is (410) 848-3000.
What is Ruben Nazario's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Ruben Nazario enrolled in Medicare?
Yes. Ruben Nazario is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Ruben Nazario's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ruben Nazario reassigns Medicare benefits to 2 organizations: Hospitalist Medicine Physicians Of Maryland PC (Walkersville, MD) and Hospitalist Medicine Physicians Of Maryland-Frederick PC (Frederick, MD). Each 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 Ruben Nazario's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Ruben Nazario was last updated on February 24, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Ruben J Nazario, MD · NPI 1699756627
Pediatrics physician in Westminster, Maryland. Individual provider, active in the CMS NPPES registry since November 8, 2005.
## Identity
- **NPI:** 1699756627 (Entity type: Individual)
- **Enumerated:** November 8, 2005
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** D0072015 (Maryland)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 200 MEMORIAL AVE, Westminster, MD 21157-5726
- **Phone:** (410) 848-3000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Hospitalist Medicine Physicians Of Maryland PC (NPI 1932907771, Walkersville, MD); Hospitalist Medicine Physicians Of Maryland-Frederick PC (NPI 1093322257, Frederick, MD) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 24, 2014
- **Other identifiers:** Medicare ID-Type Unspecified 006695E14 (VA); Medicare UPIN H32646; Medicare ID-Type Unspecified 006695E14 (MD)
---
Source: [NPI Profile](https://npiprofile.com/npi/1699756627) · Data from the CMS NPPES public registry.