AASHISH DEWAN MD
NPI 1619506979
Family Medicine in Olney, MD
About Aashish Dewan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
AASHISH DEWAN MD (NPI 1619506979) is an individual family medicine provider in Olney, Maryland, licensed in Maryland (D98444) and active in the NPI registry since April 2020. He is enrolled in Medicare PECOS, is affiliated with Frederick Health Hospital, and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 3
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
Aashish Dewan 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 Aashish Dewan reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Wheaton, MD 20902
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 309 clinicians in this Medicare group
Washington, DC 20010
- Reassigned Medicare billing, District of Columbia enrollment
- 3,530 clinicians in this Medicare group
Frederick, MD 21701
- Reassigned Medicare billing, Maryland enrollment
- 270 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 7
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.
Frederick Health Hospital
Acute Care Hospitals · Frederick, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20832 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
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 Aashish Dewan's NPI number?
The NPI number for Aashish Dewan is 1619506979. It was assigned to this individual provider in the NPPES registry on April 7, 2020.
Where is Aashish Dewan located?
Aashish Dewan practices at 18109 Prince Philip Dr Ste B200, Olney, MD 20832. The listed phone number is (240) 883-9791.
What is Aashish Dewan's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Aashish Dewan enrolled in Medicare?
Yes. Aashish Dewan 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 Aashish Dewan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Aashish Dewan reassigns Medicare benefits to 3 organizations: Medstar Urgent Care, LLC (Wheaton, MD), Medstar Medical Group II LLC (Washington, DC) and Hospitalist Medicine Physicians Of Maryland PC (Frederick, MD). 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 Aashish Dewan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Aashish Dewan affiliated with any hospitals?
According to CMS data, Aashish Dewan is affiliated with Frederick Health Hospital.
When was this NPI record last updated?
The NPPES record for Aashish Dewan was last updated on April 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Aashish Dewan, MD · NPI 1619506979
Family Medicine physician in Olney, Maryland. Individual provider, active in the CMS NPPES registry since April 7, 2020.
## Identity
- **NPI:** 1619506979 (Entity type: Individual)
- **Enumerated:** April 7, 2020
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** D98444 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 18109 PRINCE PHILIP DR STE B200, Olney, MD 20832-1591
- **Phone:** (240) 883-9791
## 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): Medstar Urgent Care, LLC (NPI 1871843409, Wheaton, MD); Medstar Medical Group II LLC (NPI 1023836137, Washington, DC); Hospitalist Medicine Physicians Of Maryland PC (NPI 1992945471, Frederick, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Toledo College Of Medicine, class of 2020
## Record status
- **NPPES last updated:** April 11, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1619506979) · Data from the CMS NPPES public registry.