What is Mason Grantz's NPI number?

Mason Grantz's National Provider Identifier (NPI) is 1811653140, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mason Grantz's specialty?

Mason Grantz is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).

Where is Mason Grantz located?

Mason Grantz's practice location on file with NPPES is 1101 Kermit Dr Ste 608, Nashville, TN 37217-5110.

What is Mason Grantz's phone number?

The practice phone number listed in the NPPES registry for Mason Grantz is (615) 499-6899.

Is Mason Grantz's NPI active?

Yes — Mason Grantz's NPI (1811653140) is active in the NPPES registry as of the last update on 2025-06-10.

IndividualActive

Mason Grantz

NPI 1811653140 · Mental Health Counselor · Nashville, TN

Mason Grantz is a Mental Health Counselor provider in Nashville, TN (NPI 1811653140).

Provider details

NPI number: 1811653140
Entity type: Individual
Primary specialty: Mental Health CounselorBehavioral Health & Social Service Providers
Sex: Male
Sole proprietor: No

Specialties & taxonomies

Mental Health CounselorPrimary101YM0800X
Behavioral Health & Social Service Providers

Profile Score

Established profile(55/100 index)

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

Registry tenure38% of score
4 yrs in NPPES 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

1101 Kermit Dr Ste 608

Nashville, TN 37217-5110

Phone: (615) 499-6899

Street-level locationGet directions

More TN providers

Mailing address