Natalie Grantner, MSW
NPI 1578607834 · Clinical Social Worker · Merrillville, IN
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Natalie Grantner, MSW is a Clinical Social Worker provider in Merrillville, IN (NPI 1578607834).
Provider details
- NPI number
- 1578607834
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- MSW
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Counselor101Y00000X
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
19 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 158 North Main StreetCrown Point, IN 46307Phone: (219) 663-0888Fax: (219) 663-0887
Registry dates
- Enumerated
- 2007-02-19
- Last updated
- 2019-09-03
Frequently asked questions
- What is Natalie Grantner's NPI number?
- Natalie Grantner's National Provider Identifier (NPI) is 1578607834, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Natalie Grantner's specialty?
- Natalie Grantner is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Natalie Grantner located?
- Natalie Grantner's practice location on file with NPPES is 9111 Broadway Ste D, Merrillville, IN 46410-7092.
- What is Natalie Grantner's phone number?
- The practice phone number listed in the NPPES registry for Natalie Grantner is (219) 281-2335.
- Does Natalie Grantner accept Medicare?
- Natalie Grantner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Natalie Grantner's NPI active?
- Yes — Natalie Grantner's NPI (1578607834) is active in the NPPES registry as of the last update on 2019-09-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.