Michael Johnston, MD
NPI 1487698361 · Emergency Medicine Physician · Nashville, TN
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Johnston, MD is a Emergency Medicine Physician provider in Nashville, TN (NPI 1487698361).
Provider details
- NPI number
- 1487698361
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 41119 (TN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
220 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 140 | $160 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 40 | $113 |
| Critical Care, First 30-74 Minutes99291 | 40 | $200 |
Typical Medicare-allowed amounts for these services range $113–$200 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (3)
- 1411 W Baddour PkwyLebanon, TN 37087-2513Phone: (615) 875-6415
- 2835 Highway 231 NShelbyville, TN 37160-7327Phone: (615) 875-6415
- 1801 N Jackson StTullahoma, TN 37388-2201Phone: (615) 875-6415
Registry dates
- Enumerated
- 2006-06-15
- Last updated
- 2025-04-24
- Certified
- 2025-04-24
Frequently asked questions
- What is Michael Johnston's NPI number?
- Michael Johnston's National Provider Identifier (NPI) is 1487698361, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Johnston's specialty?
- Michael Johnston is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Johnston located?
- Michael Johnston's practice location on file with NPPES is 1313 21st Ave South, Nashville, TN 37232-4700.
- What is Michael Johnston's phone number?
- The practice phone number listed in the NPPES registry for Michael Johnston is (615) 936-0087.
- Does Michael Johnston accept Medicare?
- Michael Johnston is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Johnston's NPI active?
- Yes — Michael Johnston's NPI (1487698361) is active in the NPPES registry as of the last update on 2025-04-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.