Margaret Hartmann, LMSW
NPI 1831554740 · Social Worker · Kalkaska, MI
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Hartmann, LMSW is a Social Worker provider in Kalkaska, MI (NPI 1831554740).
Provider details
- NPI number
- 1831554740
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Credential
- LMSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- 6801098412 (MI)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 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
Mailing address
Registry dates
- Enumerated
- 2015-12-18
- Last updated
- 2022-12-13
- Certified
- 2022-12-13
Frequently asked questions
- What is Margaret Hartmann's NPI number?
- Margaret Hartmann's National Provider Identifier (NPI) is 1831554740, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Hartmann's specialty?
- Margaret Hartmann is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Margaret Hartmann located?
- Margaret Hartmann's practice location on file with NPPES is 2469 Beebe Rd, Kalkaska, MI 49646-8919.
- What is Margaret Hartmann's phone number?
- The practice phone number listed in the NPPES registry for Margaret Hartmann is (231) 676-7913.
- Does Margaret Hartmann accept Medicare?
- Margaret Hartmann is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Hartmann's NPI active?
- Yes — Margaret Hartmann's NPI (1831554740) is active in the NPPES registry as of the last update on 2022-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.