What is Si Si Han's NPI number?

Si Si Han's National Provider Identifier (NPI) is 1104305218, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Si Si Han's specialty?

Si Si Han is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).

Where is Si Si Han located?

Si Si Han's practice location on file with NPPES is 3300 N Ridge Rd Ste 230, Ellicott City, MD 21043-3387.

What is Si Si Han's phone number?

The practice phone number listed in the NPPES registry for Si Si Han is (410) 988-2192.

Does Si Si Han accept Medicare?

Si Si Han is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Si Si Han's NPI active?

Yes — Si Si Han's NPI (1104305218) is active in the NPPES registry as of the last update on 2025-12-31.

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Si Si Han, PHD, ABPP

NPI 1104305218 · Clinical Psychologist · Ellicott City, MD

Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Si Si Han, PHD, ABPP is a Clinical Psychologist provider in Ellicott City, MD (NPI 1104305218).

Provider details

NPI number: 1104305218
Entity type: Individual
Primary specialty: Clinical PsychologistBehavioral Health & Social Service Providers
Credential: PHD, ABPP
Sex: Female
Sole proprietor: No
License: 06921 (MD)

Specialties & taxonomies

Clinical PsychologistPrimary103TC0700XLicense 06921 (MD)
Behavioral Health & Social Service Providers
Clinical Psychologist103TC0700XLicense 0810006276 (VA)
Behavioral Health & Social Service Providers

Profile Score

Established profile(66/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure28% of score
7 yrs in NPPES registry
Profile completeness28% of score
100% of core fields populated
Practice footprint17% of score
1 documented practice location
Medicare service volume (vs. specialty peers)28% of score
630 Medicare services, 2024 (ranked within specialty)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Administration of Psychological Or Neuropsychological Test, Each Additional 30 Minutes96137	203	$39
Psychotherapy, 1 Hour90837	200	$155
Evaluation of Neuropsychological Test, Each Additional Hour96133	139	$95
Exam of Neurobehavioral Status, First Hour96116	30	$91
Evaluation of Neuropsychological Test, First Hour96132	30	$127
Administration of Psychological Or Neuropsychological Test, First 30 Minutes96136	28	$43

Typical Medicare-allowed amounts for these services range $39–$155 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.

Practice location

3300 N Ridge Rd Ste 230

Ellicott City, MD 21043-3387

Phone: (410) 988-2192

Fax: (410) 988-2927

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Mailing address