Jonathan Johnson
Jonathan Johnson is an Occupational Therapy Assistant in Baltimore, MD, registered under NPI 1003030909. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Baltimore, based on OpenStreetMap data collected Aug 31, 2026. Parking is available about 0.48 mi away at Theatre Parking. There is EV charging 429 ft from the office (eVgo) — useful if you are driving in from out of town. The nearest transit stop is 538 ft away, served by 25th Street - Northbound. A pharmacy sits 0.28 mi from the entrance (Midtown Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.33 mi away.
Getting here and what is nearby
Parking 135 ft ~1 min
Restaurant Rita’s Place 144 ft ~1 min
Restaurant Patro's Pizza 150 ft ~1 min
Grocery Safeway 198 ft ~1 min
2401 North Charles Street, Baltimore 21218
Mo-Su 06:00-22:00
Restaurant American Wings & Pizza 327 ft ~2 min
Transit Saint Paul Street & 24th Street Southbound 373 ft ~2 min
EV charging eVgo 429 ft ~2 min
Transit Charles Street & 25th Street Northbound 492 ft ~2 min
Transit 25th Street - Northbound 538 ft ~3 min
Coffee Green House Juice Cafe 540 ft ~3 min
2433 Saint Paul Street, Baltimore 21218
Coffee Sophomore Coffee 561 ft ~3 min
Convenience Charles Village Discount Mart 681 ft ~3 min
2201 North Charles Street, Baltimore 21218
Pharmacy CVS Pharmacy 697 ft ~3 min
2504 North Charles Street, Baltimore 21218
09:00-22:00 "Different pharmacy hours"
Convenience Carroll's 831 ft ~4 min
Gas station Sunoco 896 ft ~4 min
Convenience Baltimore Halal Meat & Grocery 0.22 mi ~5 min
Gas station Exxon 0.23 mi ~5 min
2500 North Howard Street, Baltimore 21218
Parking Homewood Garage 0.26 mi ~6 min
2614 North Charles Street, Baltimore 21218
Pharmacy Midtown Pharmacy 0.28 mi ~6 min
2014 Maryland Avenue, Baltimore 21218
Coffee Carpet Cafe 0.33 mi ~7 min
100 E North Ave, Baltimore 21218
Mo 08:00-16:00; Tu-We off; Th-Fr 08:00-16:00; Sa 09:00-17:00; Su 09:00-16:00
Hotel Motel 6 0.35 mi ~7 min
Gas station Marathon 0.43 mi ~9 min
1801 North Charles Street, Baltimore 21201
Parking Theatre Parking 0.48 mi ~10 min
1714 North Charles Street, Baltimore 21201
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| AOO558 | MD | Occupational Therapy Assistant primary |
This provider holds licence AOO558 issued in MD. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Occupational Therapy Assistant covers
An occupational therapy assistant is a person who has graduated from an occupational therapy assistant program accredited by the Accreditation Council for Occupational Therapy Education (ACOTE) or predecessor organizations, has successfully completed a period of supervised fieldwork experience required by the accredited occupational therapy assistant program, has passed a nationally recognized entry-level examination for occupational therapy assistants, and fulfills state requirements for licensure, certification, or registration. An occupational therapy assistant provides interventions under the supervision of an occupational therapist which emphasize the therapeutic use of everyday life activities (i.e., occupations) with individuals or groups for the purpose of facilitating participation in roles and situations and in home, school, workplace, community and other settings. Occupational therapy services are provided for the purpose of promoting health and wellness and are provided to those who have or are at risk for developing an illness, injury, disease, disorder, condition, impairment, disability, activity limitation, or participation restriction. Occupational therapy assistants address the physical, cognitive, psychosocial, sensory, and other aspects of occupational performance in a variety of contexts to support engagement in everyday life activities that affect health, well-being, and quality of life. NUCC Health Care Provider Taxonomy, code 224Z00000X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003030909 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 12, 2007 |
| Last updated | Jul 8, 2007 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Practice address |
2327 N CHARLES ST Baltimore, MD 21218 (410) 889-8500 Fax (410) 889-0696 |
| Mailing address |
45 STONEWAY PL Baltimore, MD 21236 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 0 | 3 | 0 | 9 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 3 | 0 | 9 | 0 |
Sum = 41 · next multiple of 10 = 50 · check digit = 9 · actual last digit = 9
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.