AYAN DE
NPI 1881139517
Internal Medicine - Sleep Medicine in Parkville, MD
About Ayan De NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
AYAN DE (NPI 1881139517) is an individual sleep medicine provider in Parkville, Maryland, licensed in Pennsylvania (MD485817) and active in the NPI registry since January 2017. He is enrolled in Medicare PECOS, is affiliated with Wellspan York Hospital, and maintains 5 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Locations 5
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
Ayan De 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
2Medicare enrollment records show Ayan De reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Baltimore, MD 21234
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- Medicare enrollment name: Maryland Medical First PA
- 24 clinicians in this Medicare group
Shrewsbury, PA 17361
- Reassigned Medicare billing, Pennsylvania and Maryland enrollments
- Also billed through NPI 1467158923 (Maryland)
- 3,080 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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Wellspan York Hospital
Acute Care Hospitals · York, PAGettysburg Hospital
Acute Care Hospitals · Gettysburg, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21234 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.
Referred Medical Equipment & Supplies CMS DME claims 9
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 18
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Ayan De's NPI number?
The NPI number for Ayan De is 1881139517. It was assigned to this individual provider in the NPPES registry on January 4, 2017.
Where is Ayan De located?
Ayan De practices at 8901 Clement Ave, Parkville, MD 21234. The listed phone number is (410) 661-4670.
What is Ayan De's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Sleep Medicine, with taxonomy code 207RS0012X.
Is Ayan De enrolled in Medicare?
Yes. Ayan De 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 Ayan De's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ayan De reassigns Medicare benefits to 2 organizations: Maryland Medical First P.A. (Baltimore, MD) and Wellspan Medical Group (Shrewsbury, 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 Ayan De's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Ayan De affiliated with any hospitals?
According to CMS data, Ayan De is affiliated with Wellspan York Hospital and Gettysburg Hospital.
When was this NPI record last updated?
The NPPES record for Ayan De was last updated on December 10, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 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.
# Ayan De · NPI 1881139517
Sleep Medicine physician in Parkville, Maryland. Individual provider, active in the CMS NPPES registry since January 4, 2017.
## Identity
- **NPI:** 1881139517 (Entity type: Individual)
- **Enumerated:** January 4, 2017
- **Primary specialty:** Internal Medicine - Sleep Medicine · taxonomy 207RS0012X
- **State license:** MD485817 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 8901 CLEMENT AVE, Parkville, MD 21234-2603
- **Phone:** (410) 661-4670
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Maryland Medical First P.A. (NPI 1013005016, Baltimore, MD); Wellspan Medical Group (NPI 1003229626, Shrewsbury, PA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** December 10, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1881139517) · Data from the CMS NPPES public registry.