Mary Margaret Johnson, DO
NPI 1356978563 · Family Medicine Physician · Troy, AL
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Margaret Johnson, DO is a Family Medicine Physician provider in Troy, AL (NPI 1356978563).
Provider details
- NPI number
- 1356978563
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- DO.3336 (AL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 77 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 157 | 37 |
| Atorvastatin Calcium | 136 | 35 |
| Levothyroxine Sodium | 126 | 20 |
| Donepezil Hcl | 118 | 16 |
| Losartan Potassium | 80 | 14 |
| Memantine Hcl | 65 | — |
| Famotidine | 59 | 16 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-03-26
- Last updated
- 2025-01-13
- Certified
- 2025-01-13
Frequently asked questions
- What is Mary Margaret Johnson's NPI number?
- Mary Margaret Johnson's National Provider Identifier (NPI) is 1356978563, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Margaret Johnson's specialty?
- Mary Margaret Johnson is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Margaret Johnson located?
- Mary Margaret Johnson's practice location on file with NPPES is 801 S Franklin Dr, Troy, AL 36081-3838.
- What is Mary Margaret Johnson's phone number?
- The practice phone number listed in the NPPES registry for Mary Margaret Johnson is (334) 566-9800.
- Does Mary Margaret Johnson accept Medicare?
- Mary Margaret Johnson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Margaret Johnson's NPI active?
- Yes — Mary Margaret Johnson's NPI (1356978563) is active in the NPPES registry as of the last update on 2025-01-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.