Martha Johnston, MD
NPI 1558348714 · Family Medicine Physician · Miamisburg, OH
Martha Johnston, MD is a Family Medicine Physician provider in Miamisburg, OH (NPI 1558348714).
Provider details
- NPI number
- 1558348714
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 35.050078 (OH)
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
- 2005-12-29
- Last updated
- 2021-01-20
- Certified
- 2021-01-20
Frequently asked questions
- What is Martha Johnston's NPI number?
- Martha Johnston's National Provider Identifier (NPI) is 1558348714, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Martha Johnston's specialty?
- Martha Johnston is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Martha Johnston located?
- Martha Johnston's practice location on file with NPPES is 415 Byers Rd, Miamisburg, OH 45342-3684.
- What is Martha Johnston's phone number?
- The practice phone number listed in the NPPES registry for Martha Johnston is (937) 866-2494.
- Is Martha Johnston's NPI active?
- Yes — Martha Johnston's NPI (1558348714) is active in the NPPES registry as of the last update on 2021-01-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.