DOREEN CHEN MD
NPI 1760802011
Internal Medicine in Rockville, MD
About Doreen Chen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DOREEN CHEN MD (NPI 1760802011) is an individual internal medicine provider in Rockville, Maryland, licensed in Maryland (D85407) and active in the NPI registry since April 2014. She is enrolled in Medicare PECOS, is affiliated with Adventist Healthcare Shady Grove Medical Center, and is a graduate of Other (2010).
NPPES Registry Identity
Specialties & Licenses
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
Doreen Chen 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
4Medicare enrollment records show Doreen Chen reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Rockville, MD 20850
- Reassigned Medicare billing, District of Columbia enrollment
Rockville, MD 20852
- Reassigned Medicare billing, District of Columbia enrollment
- 58 clinicians in this Medicare group
Frederick, MD 21701
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 204 clinicians in this Medicare group
Elkton, MD 21921
- Reassigned Medicare billing, District of Columbia enrollment
- 347 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.
Adventist Healthcare Shady Grove Medical Center
Acute Care Hospitals · Rockville, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20850 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.
ROCKVILLE, MD 20850
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 Doreen Chen's NPI number?
The NPI number for Doreen Chen is 1760802011. It was assigned to this individual provider in the NPPES registry on April 24, 2014.
Where is Doreen Chen located?
Doreen Chen practices at 9901 Medical Center Dr, Rockville, MD 20850. The listed phone number is (240) 826-7435.
What is Doreen Chen's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Doreen Chen enrolled in Medicare?
Yes. Doreen Chen 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 Doreen Chen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Doreen Chen reassigns Medicare benefits to 4 organizations: Omnia Health (Rockville, MD), Elliot R Goldstein MD & Joel R Schulman MD PA (Rockville, MD), Hospitalist Medicine Physicians Of Maryland PC (Frederick, MD) and Usacs Integrated Acute Care Services Of Maryland, LLC (Elkton, 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 Doreen Chen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Doreen Chen affiliated with any hospitals?
According to CMS data, Doreen Chen is affiliated with Adventist Healthcare Shady Grove Medical Center.
When was this NPI record last updated?
The NPPES record for Doreen Chen was last updated on December 3, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Doreen Chen, MD · NPI 1760802011
Internal Medicine physician in Rockville, Maryland. Individual provider, active in the CMS NPPES registry since April 24, 2014.
## Identity
- **NPI:** 1760802011 (Entity type: Individual)
- **Enumerated:** April 24, 2014
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** D85407 (Maryland)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 9901 MEDICAL CENTER DR, Rockville, MD 20850-3357
- **Phone:** (240) 826-7435
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Omnia Health (NPI 1841028115, Rockville, MD); Elliot R Goldstein MD & Joel R Schulman MD PA (NPI 1164488300, Rockville, MD); Hospitalist Medicine Physicians Of Maryland PC (NPI 1992945471, Frederick, MD); Usacs Integrated Acute Care Services Of Maryland, LLC (NPI 1922598929, Elkton, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2010
## Record status
- **NPPES last updated:** December 3, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1760802011) · Data from the CMS NPPES public registry.