DR. ARMIN MAREFAT D.O.
NPI 1629291000
Internal Medicine in Wilmington, DE
About Dr. Armin Marefat D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ARMIN MAREFAT D.O. (NPI 1629291000) is an individual internal medicine provider in Wilmington, Delaware, licensed in Delaware (C7-0003221) and active in the NPI registry since April 2007. He is enrolled in Medicare PECOS, is affiliated with Chester County Hospital, and is a graduate of Philadelphia College Of Osteopathic Medicine (2005).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
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
Dr. Armin Marefat D.o. 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 Armin Marefat reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hockessin, DE 19707
- Reassigned Medicare billing, Delaware enrollment
- 4 clinicians in this Medicare group
Newark, DE 19713
- Reassigned Medicare billing, Delaware enrollment
- 49 clinicians in this Medicare group
Lewes, DE 19958
- Reassigned Medicare billing, Delaware enrollment
- 382 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 10
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Chester County Hospital
Acute Care Hospitals · West Chester, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 19801 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
WILMINGTON, DE 19801
WILMINGTON, DE 19801
WILMINGTON, DE 19801
WILMINGTON, DE 19801
WILMINGTON, DE 19801
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 Armin Marefat's NPI number?
The NPI number for Armin Marefat is 1629291000. It was assigned to this individual provider in the NPPES registry on April 11, 2007.
Where is Armin Marefat located?
Armin Marefat practices at 501 W 14th St, Wilmington, DE 19801. The listed phone number is (302) 428-4411.
What is Armin Marefat's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Armin Marefat enrolled in Medicare?
Yes. Armin Marefat 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 Armin Marefat's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Armin Marefat reassigns Medicare benefits to 3 organizations: Value In Prevention Of Delaware LLC (Hockessin, DE), Ent And Allergy Of Delaware LLC (Newark, DE) and Beebe Physician Network, Inc. (Lewes, DE). 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 Armin Marefat's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Armin Marefat accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and AmeriHealth Caritas Next and 1 other insurer list Armin Marefat 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.
Is Armin Marefat affiliated with any hospitals?
According to CMS data, Armin Marefat is affiliated with Chester County Hospital.
When was this NPI record last updated?
The NPPES record for Armin Marefat was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Dr. Armin Marefat, D.O. · NPI 1629291000
Internal Medicine physician in Wilmington, Delaware. Individual provider, active in the CMS NPPES registry since April 11, 2007.
## Identity
- **NPI:** 1629291000 (Entity type: Individual)
- **Enumerated:** April 11, 2007
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** C7-0003221 (Delaware)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 501 W 14TH ST, Wilmington, DE 19801-1013
- **Phone:** (302) 428-4411
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Value In Prevention Of Delaware LLC (NPI 1295422913, Hockessin, DE); Ent And Allergy Of Delaware LLC (NPI 1386946333, Newark, DE); Beebe Physician Network, Inc. (NPI 1730133992, Lewes, DE) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Philadelphia College Of Osteopathic Medicine, class of 2005
## Record status
- **NPPES last updated:** July 8, 2007
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Source: [NPI Profile](https://npiprofile.com/npi/1629291000) · Data from the CMS NPPES public registry.