What is Joel Hassman's NPI number?

Joel Hassman's National Provider Identifier (NPI) is 1669433777, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Joel Hassman's specialty?

Joel Hassman is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).

Where is Joel Hassman located?

Joel Hassman's practice location on file with NPPES is 8258 Veterans Hwy Ste 13, Millersville, MD 21108-1564.

What is Joel Hassman's phone number?

The practice phone number listed in the NPPES registry for Joel Hassman is (410) 757-2077.

Is Joel Hassman's NPI active?

Yes — Joel Hassman's NPI (1669433777) is active in the NPPES registry as of the last update on 2025-06-26.

IndividualActive

Joel Hassman, M.D.

NPI 1669433777 · Psychiatry Physician · Millersville, MD

Joel Hassman, M.D. is a Psychiatry Physician provider in Millersville, MD (NPI 1669433777).

Provider details

NPI number: 1669433777
Entity type: Individual
Primary specialty: Psychiatry PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: Yes
License: D0040942 (MD)

Specialties & taxonomies

Psychiatry PhysicianPrimary2084P0800XLicense D0040942 (MD)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(91/100 index)

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

Registry tenure38% of score
20 yrs in NPPES 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

8258 Veterans Hwy Ste 13

Millersville, MD 21108-1564

Phone: (410) 757-2077

Street-level locationGet directions

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Mailing address