What is Jan Griessmann's NPI number?

Jan Griessmann's National Provider Identifier (NPI) is 1619819869, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Jan Griessmann's specialty?

Jan Griessmann is listed in the NPPES registry with a primary specialty of Home Health Aide (Nursing Service Related Providers).

Where is Jan Griessmann located?

Jan Griessmann's practice location on file with NPPES is 28175 Haggerty Rd, Novi, MI 48377-2903.

What is Jan Griessmann's phone number?

The practice phone number listed in the NPPES registry for Jan Griessmann is (734) 201-4846.

Is Jan Griessmann's NPI active?

Yes — Jan Griessmann's NPI (1619819869) is active in the NPPES registry as of the last update on 2026-04-07.

IndividualActive

Jan Griessmann

NPI 1619819869 · Home Health Aide · Novi, MI

Jan Griessmann is a Home Health Aide provider in Novi, MI (NPI 1619819869).

Provider details

NPI number: 1619819869
Entity type: Individual
Primary specialty: Home Health AideNursing Service Related Providers
Sex: Male
Sole proprietor: Yes

Specialties & taxonomies

Home Health AidePrimary374U00000X
Nursing Service Related Providers

Profile Score

Basic profile(46/100 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
83% 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

28175 Haggerty Rd

Novi, MI 48377-2903

Phone: (734) 201-4846

Street-level locationGet directions

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Mailing address