Mark Gustafson, D.O.
NPI 1851667000 · Emergency Medicine Physician · Charleston, WV
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Gustafson, D.O. is a Emergency Medicine Physician provider in Charleston, WV (NPI 1851667000).
Provider details
- NPI number
- 1851667000
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 2723 (WV)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
14 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
130 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) |
|---|---|---|
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 72 | $121 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 30 | $72 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 28 | $178 |
Typical Medicare-allowed amounts for these services range $72–$178 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$21 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
- 2012-03-31
- Last updated
- 2016-12-16
Frequently asked questions
- What is Mark Gustafson's NPI number?
- Mark Gustafson's National Provider Identifier (NPI) is 1851667000, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Gustafson's specialty?
- Mark Gustafson is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Gustafson located?
- Mark Gustafson's practice location on file with NPPES is 3110 Maccorkle Ave Se, Charleston, WV 25304-1210.
- What is Mark Gustafson's phone number?
- The practice phone number listed in the NPPES registry for Mark Gustafson is (304) 388-7170.
- Does Mark Gustafson accept Medicare?
- Mark Gustafson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Gustafson's NPI active?
- Yes — Mark Gustafson's NPI (1851667000) is active in the NPPES registry as of the last update on 2016-12-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.