Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Ayan De

Individual provider Internal Medicine Physician · NPI 1881139517

Ayan De practises Sleep Medicine in Parkville, Maryland. Qualified in 2014, 12 years ago. Practices with Wellspan Medical Group, a 2,342-clinician group, works from 6 locations, accepts Medicare assignment and offers telehealth. Licensed in Maryland and Pennsylvania.

Years since qualifying
12
Licensed in
MD, PA
In the registry since
2017
Specialties on file
3
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Practice location Address checks out

8901 Clement Ave
Parkville, MD 21234-2603
Phone: (410) 661-4670
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (5)

  • 254 Easton Ave, New Brunswick, NJ 08901-1766 — (732) 745-8600
  • 9500 Euclid Ave, Cleveland, OH 44195-1766 — (216) 444-5539
  • 601 Norland Ave Ste 100, Chambersburg, PA 17201-4235 — (717) 264-1600
  • 40 V Twin Dr, Gettysburg, PA 17325-7878 — (717) 339-2790
  • 2350 Freedom Way Ste 202, York, PA 17402-8202 — (717) 851-2465

Specialties & licences

Sleep Medicine (Internal Medicine) Physician (primary) Taxonomy 207RS0012X · Licence MD485817 (PA)
Internal Medicine Physician Taxonomy 207R00000X · Licence D0088416 (MD)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1881139517
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedJanuary 4, 2017
Last updated in NPPESDecember 10, 2024
Certification dateDecember 10, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtySLEEP MEDICINE
Medical schoolOTHER
Graduated 2014 (12 years in practice)
Group practice Wellspan Medical Group — 2342 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients266
Services billed 1,600 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $95 2 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Wellspan Medical Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2342 clinicians in the practice; 12 are shown here.

Other providers in Parkville