AYMAN SEIFIN MD
NPI 1659923266
Hospitalist in Darby, PA
About Ayman Seifin Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
AYMAN SEIFIN MD (NPI 1659923266) is an individual hospitalist provider in Darby, Pennsylvania, licensed in Pennsylvania (MD478418) and active in the NPI registry since July 2019. He is enrolled in Medicare PECOS, is affiliated with Mercy Catholic Medical Center- Mercy Fitzgerald, and is a graduate of Other (1996).
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Ayman Seifin Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Ayman Seifin reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Darby, PA 19023
- Reassigned Medicare billing, Pennsylvania enrollment
- 646 clinicians in this Medicare group
Darby, PA 19023
- Reassigned Medicare billing, Pennsylvania enrollment
- 103 clinicians in this Medicare group
Abington, PA 19001
- Reassigned Medicare billing, Pennsylvania enrollment
- 167 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.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Catholic Medical Center- Mercy Fitzgerald
Acute Care Hospitals · Darby, PAPenn Presbyterian Medical Center
Acute Care Hospitals · Philadelphia, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 19023 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.
DARBY, PA 19023
DARBY, PA 19023
DARBY, PA 19023
DARBY, PA 19023
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 Ayman Seifin's NPI number?
The NPI number for Ayman Seifin is 1659923266. It was assigned to this individual provider in the NPPES registry on July 13, 2019.
Where is Ayman Seifin located?
Ayman Seifin practices at 1500 Lansdowne Ave, Darby, PA 19023. The listed phone number is (610) 237-4000.
What is Ayman Seifin's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Ayman Seifin enrolled in Medicare?
Yes. Ayman Seifin is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Ayman Seifin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ayman Seifin reassigns Medicare benefits to 3 organizations: Trinity Health Mid-Atlantic Medical Group (Darby, PA), Galen Inpatient Physicians PC (Darby, PA) and Abington Memorial Hospital (Abington, 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 Ayman Seifin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Ayman Seifin affiliated with any hospitals?
According to CMS data, Ayman Seifin is affiliated with Mercy Catholic Medical Center- Mercy Fitzgerald and Penn Presbyterian Medical Center.
When was this NPI record last updated?
The NPPES record for Ayman Seifin was last updated on January 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Ayman Seifin, MD · NPI 1659923266
Hospitalist physician in Darby, Pennsylvania. Individual provider, active in the CMS NPPES registry since July 13, 2019.
## Identity
- **NPI:** 1659923266 (Entity type: Individual)
- **Enumerated:** July 13, 2019
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** MD478418 (Pennsylvania)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1500 LANSDOWNE AVE, Darby, PA 19023-1200
- **Phone:** (610) 237-4000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Trinity Health Mid-Atlantic Medical Group (NPI 1083138770, Darby, PA); Galen Inpatient Physicians PC (NPI 1235016593, Darby, PA); Abington Memorial Hospital (NPI 1770508319, Abington, PA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1996
## Record status
- **NPPES last updated:** January 16, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1659923266) · Data from the CMS NPPES public registry.