What is Markel Johnson's NPI number?

Markel Johnson's National Provider Identifier (NPI) is 1215860994, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Markel Johnson's specialty?

Markel Johnson is listed in the NPPES registry with a primary specialty of Behavior Technician (Behavioral Health & Social Service Providers).

Where is Markel Johnson located?

Markel Johnson's practice location on file with NPPES is 1517 Reisterstown Rd Ste 211, Baltimore, MD 21208-4325.

What is Markel Johnson's phone number?

The practice phone number listed in the NPPES registry for Markel Johnson is (410) 541-1316.

Is Markel Johnson's NPI active?

Yes — Markel Johnson's NPI (1215860994) is active in the NPPES registry as of the last update on 2026-06-04.

IndividualActive

Markel Johnson

NPI 1215860994 · Behavior Technician · Baltimore, MD

Markel Johnson is a Behavior Technician provider in Baltimore, MD (NPI 1215860994).

Provider details

NPI number: 1215860994
Entity type: Individual
Primary specialty: Behavior TechnicianBehavioral Health & Social Service Providers
Sex: Female
Sole proprietor: No

Specialties & taxonomies

Behavior TechnicianPrimary106S00000X
Behavioral Health & Social Service Providers

Profile Score

Basic profile(46/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
Under 1 yr in registry
Profile completeness38% of score
83% 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

1517 Reisterstown Rd Ste 211

Baltimore, MD 21208-4325

Phone: (410) 541-1316

Street-level locationGet directions

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Mailing address