Mark Johnson, M.D.
NPI 1811375249 · Emergency Medicine Physician · East Point, GA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Johnson, M.D. is a Emergency Medicine Physician provider in East Point, GA (NPI 1811375249).
Provider details
- NPI number
- 1811375249
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 80598 (GA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
11 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
423 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 | 283 | $169 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 120 | $115 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 20 | $68 |
Typical Medicare-allowed amounts for these services range $68–$169 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methocarbamol | 98 | 94 |
| Prednisone | 84 | 82 |
| Ketorolac Tromethamine | 75 | 74 |
| Cephalexin | 64 | 64 |
| Diclofenac Sodium | 51 | 47 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 51 | 51 |
| Ondansetronbrand: Ondansetron Odt | 47 | 44 |
Practice location
Mailing address
Additional practice locations (1)
- 171 Ashley AveCharleston, SC 29425-8908Phone: (843) 792-2300
Registry dates
- Enumerated
- 2015-05-18
- Last updated
- 2018-08-09
Frequently asked questions
- What is Mark Johnson's NPI number?
- Mark Johnson's National Provider Identifier (NPI) is 1811375249, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Johnson's specialty?
- Mark Johnson is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Johnson located?
- Mark Johnson's practice location on file with NPPES is 1170 Cleveland Ave, East Point, GA 30344-3615.
- What is Mark Johnson's phone number?
- The practice phone number listed in the NPPES registry for Mark Johnson is (404) 466-1600.
- Does Mark Johnson accept Medicare?
- Mark Johnson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Johnson's NPI active?
- Yes — Mark Johnson's NPI (1811375249) is active in the NPPES registry as of the last update on 2018-08-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.