Carl Johnson, MD
NPI 1144237215 · Internal Medicine Physician · Topsfield, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Carl Johnson, MD is a Internal Medicine Physician provider in Topsfield, MA (NPI 1144237215).
Provider details
- NPI number
- 1144237215
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 46917 (MA)
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
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
738 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) |
|---|---|---|
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, at Least 10 Minutes99307 | 433 | $40 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 157 | $74 |
| Initial Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, 50 Minutes Or More99306 | 97 | $181 |
| Nursing Facility Discharge Day Management, 30 Minutes Or Less99315 | 51 | $81 |
Typical Medicare-allowed amounts for these services range $40–$181 (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 · 74 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Warfarin Sodium | 231 | — |
| Apixabanbrand: Eliquis | 188 | 17 |
| Atorvastatin Calcium | 162 | 25 |
| Furosemide | 139 | 14 |
| Trazodone Hcl | 133 | 12 |
| Metoprolol Succinate | 101 | 19 |
| Levothyroxine Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-02
- Last updated
- 2023-02-07
- Certified
- 2023-02-07
Frequently asked questions
- What is Carl Johnson's NPI number?
- Carl Johnson's National Provider Identifier (NPI) is 1144237215, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Carl Johnson's specialty?
- Carl Johnson is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Carl Johnson located?
- Carl Johnson's practice location on file with NPPES is 123 High St, Topsfield, MA 01983-1921.
- What is Carl Johnson's phone number?
- The practice phone number listed in the NPPES registry for Carl Johnson is (978) 921-1392.
- Does Carl Johnson accept Medicare?
- Carl Johnson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Carl Johnson's NPI active?
- Yes — Carl Johnson's NPI (1144237215) is active in the NPPES registry as of the last update on 2023-02-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.