Donald Mackler, MD
NPI 1013983188 · Gastroenterology Physician · Chattanooga, TN
Donald Mackler, MD is a Gastroenterology Physician provider in Chattanooga, TN (NPI 1013983188).
Provider details
- NPI number
- 1013983188
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 0000011215 (TN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
- 2006-02-27
- Last updated
- 2026-04-26
Frequently asked questions
- What is Donald Mackler's NPI number?
- Donald Mackler's National Provider Identifier (NPI) is 1013983188, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donald Mackler's specialty?
- Donald Mackler is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Donald Mackler located?
- Donald Mackler's practice location on file with NPPES is 721 Glenwood Dr, Chattanooga, TN 37404-1106.
- What is Donald Mackler's phone number?
- The practice phone number listed in the NPPES registry for Donald Mackler is (423) 629-6258.
- Is Donald Mackler's NPI active?
- Yes — Donald Mackler's NPI (1013983188) is active in the NPPES registry as of the last update on 2026-04-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.