Mariah Johnson, M.D.
NPI 1578975991 · Dermatology Physician · Portland, OR
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mariah Johnson, M.D. is a Dermatology Physician provider in Portland, OR (NPI 1578975991).
Provider details
- NPI number
- 1578975991
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 187670 (OR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,696 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Removal and Microscopic Exam of Growth of Head, Neck, Hands, Feet, Or Genitals, 1-5 Tissue Blocks17311 | 414 | $555 |
| Removal and Microscopic Exam of Growth of Head, Neck, Hands, Feet, Or Genitals, Each Additional Stage, 1-5 Tissue Blocks17312 | 237 | $396 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 128 | $55 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 125 | $41 |
| Intermediate Repair of Wound of Face, Ears, Eyelids, Nose, Lips, Or Mouth, 2.6-5.0 Cm12052 | 61 | $169 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Doxycycline Monohydrate | 55 | 50 |
| Cephalexin | 35 | 33 |
| Tretinoin | 26 | 12 |
| Doxycycline Hyclate | 25 | 23 |
| Fluorouracil | 20 | 19 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 19 | 19 |
| Clobetasol Propionate | 11 | — |
| Valacyclovir Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$18 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-05-21
- Last updated
- 2018-08-27
Frequently asked questions
- What is Mariah Johnson's NPI number?
- Mariah Johnson's National Provider Identifier (NPI) is 1578975991, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mariah Johnson's specialty?
- Mariah Johnson is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Mariah Johnson located?
- Mariah Johnson's practice location on file with NPPES is 3303 Sw Bond Ave # 16d, Portland, OR 97239.
- What is Mariah Johnson's phone number?
- The practice phone number listed in the NPPES registry for Mariah Johnson is (503) 418-3376.
- Does Mariah Johnson accept Medicare?
- Mariah Johnson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mariah Johnson's NPI active?
- Yes — Mariah Johnson's NPI (1578975991) is active in the NPPES registry as of the last update on 2018-08-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.