RONALD S OSER MD PA
NPI 1275694820
Ophthalmology in Laurel, MD
About Ronald S Oser Md Pa NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RONALD S OSER MD PA (NPI 1275694820) is a healthcare organization registered as an ophthalmology in Laurel, Maryland and active in the NPI registry since December 2006. The organization holds a CLIA Waiver certificate valid through January 5, 2028 and lists Ronald S Oser, President, 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)
Ronald S Oser Md Pa 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 Ronald S Oser MD PA, which bills Medicare for the services they deliver. Of these, 1 practice at this address. 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.
CLIA Laboratory Certificates CMS CLIA
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 Waiver 21D2071149
Ronald S Oser, MD Dba Laurel Eye Physicians · Laurel, MDFrequently 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 Ronald S Oser MD PA's NPI number?
The NPI number for Ronald S Oser MD PA is 1275694820. It was assigned to this organization in the NPPES registry on December 13, 2006.
Where is Ronald S Oser MD PA located?
Ronald S Oser MD PA is located at 14201 Laurel Park Dr Suite 208, Laurel, MD 20707. The listed phone number is (301) 498-6616.
What is Ronald S Oser MD PA's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is Ronald S Oser MD PA enrolled in Medicare?
Yes. Ronald S Oser MD PA is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Ronald S Oser MD PA?
According to the CMS Revalidation Reassignment List (October 2026 release), 3 clinicians reassign their Medicare billing to Ronald S Oser MD PA, in Ophthalmology and Optometry. 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.
Does Ronald S Oser MD PA hold a CLIA laboratory certificate?
Yes. A Certificate of Waiver (number 21D2071149) is associated with this NPI, valid through January 5, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
When was this NPI record last updated?
The NPPES record for Ronald S Oser MD PA was last updated on January 27, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Ronald S Oser Md Pa · NPI 1275694820
Ophthalmology organization in Laurel, Maryland. Organization record, active in the CMS NPPES registry since December 13, 2006.
## Identity
- **NPI:** 1275694820 (Entity type: Organization)
- **Enumerated:** December 13, 2006
- **Primary specialty:** Ophthalmology · taxonomy 207W00000X
- **Organization subpart:** No
- **Authorized official:** Ronald Oser, PRESIDENT
## Practice location
- **Address:** 14201 LAUREL PARK DR, SUITE 208, Laurel, MD 20707-5203
- **Phone:** (301) 498-6616 · **Fax:** (301) 498-8030
## 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: Ophthalmology (2), Optometry (1); 1 practice at this address · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** January 27, 2015
- **Other identifiers:** Medicare PIN 005N (MD); Medicare PIN ZDNN (MD)
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1275694820) · Data from the CMS NPPES public registry.