ROBERT G. SZEWC, M.D., P.A.
NPI 1366599888
Internal Medicine - Nephrology in San Antonio, TX
About Robert G. Szewc, M.d., P.a. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ROBERT G. SZEWC, M.D., P.A. (NPI 1366599888) is a healthcare organization registered as a nephrology in San Antonio, Texas and active in the NPI registry since January 2007. The organization holds a CLIA Waiver certificate valid through January 9, 2028 and lists Robert G Szewc, Owner, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 5
Other Identifiers 1
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Robert G. Szewc, M.d., P.a. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
27Medicare enrollment records show 27 clinicians reassign Medicare billing to Robert G. Szewc, M.D., P.A., which bills Medicare for the services they deliver. Of these, 3 practice at this address and 13 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 10
Nearest to this location (20)
See all 27Source: 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 45D1016754
Robert G Szewc MD PA · San Antonio, TXFrequently 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 Robert G. Szewc, M.D., P.A.'s NPI number?
The NPI number for Robert G. Szewc, M.D., P.A. is 1366599888. It was assigned to this organization in the NPPES registry on January 5, 2007.
Where is Robert G. Szewc, M.D., P.A. located?
Robert G. Szewc, M.D., P.A. is located at 915 S Laredo St Ste 200, San Antonio, TX 78204. The listed phone number is (210) 277-1418.
What is Robert G. Szewc, M.D., P.A.'s specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is Robert G. Szewc, M.D., P.A. enrolled in Medicare?
Yes. Robert G. Szewc, M.D., P.A. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Robert G. Szewc, M.D., P.A.?
According to the CMS Revalidation Reassignment List (October 2026 release), 27 clinicians in 10 Medicare specialties reassign their Medicare billing to Robert G. Szewc, M.D., P.A.. 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. The largest specialties are Internal Medicine (7), Nurse Practitioner (7) and Nephrology (4). Of these, 3 practice at this address and 13 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Does Robert G. Szewc, M.D., P.A. hold a CLIA laboratory certificate?
Yes. A Certificate of Waiver (number 45D1016754) is associated with this NPI, valid through January 9, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
What insurance does Robert G. Szewc, M.D., P.A. accept?
Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and Ambetter from Superior HealthPlan and 2 other insurers list Robert G. Szewc, M.D., P.A. as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Robert G. Szewc, M.D., P.A. was last updated on December 23, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Robert G. Szewc, M.d., P.a. · NPI 1366599888
Nephrology organization in San Antonio, Texas. Organization record, active in the CMS NPPES registry since January 5, 2007.
## Identity
- **NPI:** 1366599888 (Entity type: Organization)
- **Enumerated:** January 5, 2007
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **Organization subpart:** No
- **Authorized official:** Robert Szewc, OWNER
## Practice location
- **Address:** 915 S LAREDO ST STE 200, San Antonio, TX 78204-3211
- **Phone:** (210) 277-1418 · **Fax:** (210) 277-1458
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 27 clinicians in 10 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Internal Medicine (7), Nurse Practitioner (7), Nephrology (4); 3 practice at this address and 13 within 10 miles; [full list](https://npiprofile.com/npi/1366599888/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** December 23, 2021
- **Other identifiers:** Medicaid 156430402 (TX)
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1366599888) · Data from the CMS NPPES public registry.