SI SI HAN PHD, ABPP
NPI 1104305218
Psychologist - Clinical in Ellicott City, MD
About Si Si Han Phd, Abpp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SI SI HAN PHD, ABPP (NPI 1104305218) is an individual clinical provider in Ellicott City, Maryland, licensed in Maryland (06921) and active in the NPI registry since August 2018. She is enrolled in Medicare PECOS and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
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
Si Si Han Phd, Abpp 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 Si Si Han reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Ellicott City, MD 21043
- Reassigned Medicare billing, Maryland enrollment
Gaithersburg, MD 20877
- Reassigned Medicare billing, District of Columbia enrollment
- 20 clinicians in this Medicare group
Winchester, VA 22602
- Reassigned Medicare billing, Virginia enrollment
- 756 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 6
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21043 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 2
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 Si Si Han's NPI number?
The NPI number for Si Si Han is 1104305218. It was assigned to this individual provider in the NPPES registry on August 9, 2018.
Where is Si Si Han located?
Si Si Han practices at 3300 N Ridge Rd Ste 230, Ellicott City, MD 21043. The listed phone number is (410) 988-2192.
What is Si Si Han's specialty?
The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.
Is Si Si Han enrolled in Medicare?
Yes. Si Si Han 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 Si Si Han's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Si Si Han reassigns Medicare benefits to 3 organizations: Brain & Behavior Care LLC (Ellicott City, MD), Chinese Culture And Community Service Center, Inc. (Gaithersburg, MD) and Winchester Medical Center (Winchester, VA). 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 Si Si Han's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Si Si Han accept?
Health plans from CareSource list Si Si Han as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Si Si Han was last updated on December 31, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Si Si Han, PHD, ABPP · NPI 1104305218
Clinical provider in Ellicott City, Maryland. Individual provider, active in the CMS NPPES registry since August 9, 2018.
## Identity
- **NPI:** 1104305218 (Entity type: Individual)
- **Enumerated:** August 9, 2018
- **Primary specialty:** Psychologist - Clinical · taxonomy 103TC0700X
- **State license:** 06921 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 3300 N RIDGE RD STE 230, Ellicott City, MD 21043-3387
- **Phone:** (410) 988-2192 · **Fax:** (410) 988-2927
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Brain & Behavior Care LLC (NPI 1780376731, Ellicott City, MD); Chinese Culture And Community Service Center, Inc. (NPI 1033509591, Gaithersburg, MD); Winchester Medical Center (NPI 1689463671, Winchester, VA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** December 31, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1104305218) · Data from the CMS NPPES public registry.