DR. PAUL S PORTER JR. MD
NPI 1588801898
Emergency Medicine in Bethesda, MD
About Dr. Paul S Porter Jr. Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. PAUL S PORTER JR. MD (NPI 1588801898) is an individual emergency medicine provider in Bethesda, Maryland, licensed in Maryland (D0091252) and active in the NPI registry since January 2009. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 8
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Paul S Porter Jr. Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Paul Porter reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Frederick, MD 21701
- Reassigned Medicare billing, Maryland enrollment
- 91 clinicians in this Medicare group
Pittsburgh, PA 15212
- Reassigned Medicare billing, Pennsylvania enrollment
- 175 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 20889 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 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BETHESDA, MD 20889
BETHESDA, MD 20889
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 Paul Porter's NPI number?
The NPI number for Paul Porter is 1588801898. It was assigned to this individual provider in the NPPES registry on January 9, 2009.
Where is Paul Porter located?
Paul Porter practices at 4494 Palmer Rd, Bethesda, MD 20889. The listed phone number is (301) 295-4810.
What is Paul Porter's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Paul Porter enrolled in Medicare?
Yes. Paul Porter is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Paul Porter's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Paul Porter reassigns Medicare benefits to 2 organizations: Hospitalist Medicine Physicians Of Maryland-Frederick PC (Frederick, MD) and Ahn Emergency Group Of Pittsburgh Ltd. (Pittsburgh, PA). 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 Paul Porter'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 Paul Porter was last updated on July 5, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Dr. Paul S Porter Jr., MD · NPI 1588801898
Emergency Medicine physician in Bethesda, Maryland. Individual provider, active in the CMS NPPES registry since January 9, 2009.
## Identity
- **NPI:** 1588801898 (Entity type: Individual)
- **Enumerated:** January 9, 2009
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** D0091252 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 4494 PALMER RD, Bethesda, MD 20889-1541
- **Phone:** (301) 295-4810
## 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-Frederick PC (NPI 1093322257, Frederick, MD); Ahn Emergency Group Of Pittsburgh Ltd. (NPI 1043635402, Pittsburgh, PA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 5, 2025
- **Other identifiers:** Other 001261801 (RI); Other 07/14/2009 (RI); Other 1962455022 (RI); and 5 more
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Source: [NPI Profile](https://npiprofile.com/npi/1588801898) · Data from the CMS NPPES public registry.