Carl Johnson, M.D.
NPI 1821039108 · Orthopaedic Surgery Physician · Lutherville Timonium, MD
Carl Johnson, M.D. is a Orthopaedic Surgery Physician provider in Lutherville Timonium, MD (NPI 1821039108).
Provider details
- NPI number
- 1821039108
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- D26445 (MD)
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
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
- 2006-06-09
- Last updated
- 2013-02-08
Frequently asked questions
- What is Carl Johnson's NPI number?
- Carl Johnson's National Provider Identifier (NPI) is 1821039108, 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 Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Carl Johnson located?
- Carl Johnson's practice location on file with NPPES is 10753 Falls Rd, Lutherville Timonium, MD 21093-4535.
- What is Carl Johnson's phone number?
- The practice phone number listed in the NPPES registry for Carl Johnson is (410) 583-2727.
- Is Carl Johnson's NPI active?
- Yes — Carl Johnson's NPI (1821039108) is active in the NPPES registry as of the last update on 2013-02-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.