What is Susan Sieber's NPI number?

Susan Sieber's National Provider Identifier (NPI) is 1619856754, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Susan Sieber's specialty?

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

Where is Susan Sieber located?

Susan Sieber's practice location on file with NPPES is 8908 Riggs Rd, Adelphi, MD 20783-1632.

What is Susan Sieber's phone number?

The practice phone number listed in the NPPES registry for Susan Sieber is (301) 431-5630.

Is Susan Sieber's NPI active?

Yes — Susan Sieber's NPI (1619856754) is active in the NPPES registry as of the last update on 2025-09-02.

IndividualActive

Susan Sieber

NPI 1619856754 · Psychologist · Adelphi, MD

Susan Sieber is a Psychologist provider in Adelphi, MD (NPI 1619856754).

Provider details

NPI number: 1619856754
Entity type: Individual
Primary specialty: PsychologistBehavioral Health & Social Service Providers
Sole proprietor: Yes
License: 4345 (MD)

Specialties & taxonomies

PsychologistPrimary103T00000XLicense 4345 (MD)
Behavioral Health & Social Service Providers

Profile Score

Established profile(54/100 index)

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

Registry tenure38% of score
Under 1 yr in registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

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.

Practice location

8908 Riggs Rd

Adelphi, MD 20783-1632

Phone: (301) 431-5630

Street-level locationGet directions

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Mailing address