MONICA SIM CRNP
NPI 1679441653
Nurse Practitioner - Family in Rockville, MD
About Monica Sim Crnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MONICA SIM CRNP (NPI 1679441653) is an individual family provider in Rockville, Maryland, licensed in Maryland (R263649) and active in the NPI registry since October 2025. She is enrolled in Medicare PECOS and is a graduate of Other (2025).
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
Monica Sim Crnp 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 Reassignment
Medicare enrollment records show Monica Sim reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Rockville, MD 20852
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 15 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.
Physician 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 Monica Sim's NPI number?
The NPI number for Monica Sim is 1679441653. It was assigned to this individual provider in the NPPES registry on October 29, 2025.
Where is Monica Sim located?
Monica Sim practices at 9901 Medical Center Dr, Rockville, MD 20850. The listed phone number is (240) 826-6000.
What is Monica Sim's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Monica Sim enrolled in Medicare?
Yes. Monica Sim 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 organization bills Medicare for Monica Sim's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Monica Sim reassigns Medicare benefits to Zeus Primary Care Associates LLC (Rockville, MD). The 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 Monica Sim's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Monica Sim was last updated on October 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Monica Sim, CRNP · NPI 1679441653
Family physician in Rockville, Maryland. Individual provider, active in the CMS NPPES registry since October 29, 2025.
## Identity
- **NPI:** 1679441653 (Entity type: Individual)
- **Enumerated:** October 29, 2025
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** R263649 (Maryland)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 9901 MEDICAL CENTER DR, Rockville, MD 20850-3357
- **Phone:** (240) 826-6000
## 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:** Zeus Primary Care Associates LLC (NPI 1457973026, Rockville, MD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2025
## Record status
- **NPPES last updated:** October 29, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1679441653) · Data from the CMS NPPES public registry.