Olayinka Johnson, M.D.
NPI 1093923229 · Geriatric Psychiatry Physician · Linthicum, MD
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Olayinka Johnson, M.D. is a Geriatric Psychiatry Physician provider in Linthicum, MD (NPI 1093923229).
Provider details
- NPI number
- 1093923229
- Entity type
- Individual
- Primary specialty
- Geriatric Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- D0055180 (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
19 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.
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 |
|---|---|---|
| Quetiapine Fumarate | 45 | — |
| Bupropion Hclbrand: Bupropion Xl | 40 | — |
| Trazodone Hcl | 39 | 12 |
| Aripiprazole | 29 | — |
| Sertraline Hcl | 29 | — |
| Mirtazapine | 28 | — |
| Fluoxetine Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-20
- Last updated
- 2011-11-21
Frequently asked questions
- What is Olayinka Johnson's NPI number?
- Olayinka Johnson's National Provider Identifier (NPI) is 1093923229, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Olayinka Johnson's specialty?
- Olayinka Johnson is listed in the NPPES registry with a primary specialty of Geriatric Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Olayinka Johnson located?
- Olayinka Johnson's practice location on file with NPPES is 809 N Hammonds Ferry Rd, Linthicum, MD 21090-1301.
- What is Olayinka Johnson's phone number?
- The practice phone number listed in the NPPES registry for Olayinka Johnson is (410) 789-2500.
- Does Olayinka Johnson accept Medicare?
- Olayinka Johnson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Olayinka Johnson's NPI active?
- Yes — Olayinka Johnson's NPI (1093923229) is active in the NPPES registry as of the last update on 2011-11-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.