William Martell
NPI 1306300587 · Clinical Social Worker · Traverse City, MI
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Martell is a Clinical Social Worker provider in Traverse City, MI (NPI 1306300587).
Provider details
- NPI number
- 1306300587
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
- License
- 6801090714 (MI)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
7 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
- 2019-01-22
- Last updated
- 2024-11-25
- Certified
- 2024-11-25
Frequently asked questions
- What is William Martell's NPI number?
- William Martell's National Provider Identifier (NPI) is 1306300587, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Martell's specialty?
- William Martell is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is William Martell located?
- William Martell's practice location on file with NPPES is 1719 S Garfield Ave, Traverse City, MI 49686-4337.
- What is William Martell's phone number?
- The practice phone number listed in the NPPES registry for William Martell is (231) 935-0799.
- Does William Martell accept Medicare?
- William Martell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Martell's NPI active?
- Yes — William Martell's NPI (1306300587) is active in the NPPES registry as of the last update on 2024-11-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.