Mark O'Callaghan, M.D.
NPI 1023180890 · Neuroradiology Physician · Tacoma, WA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark O'Callaghan, M.D. is a Neuroradiology Physician provider in Tacoma, WA (NPI 1023180890).
Provider details
- NPI number
- 1023180890
- Entity type
- Individual
- Primary specialty
- Neuroradiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD00047091 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
41 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| X-Ray of Lower and Sacral Spine, 2-3 Views72100 | 21 | $14 |
| X-Ray of Chest, 2 Views71046 | 20 | $16 |
Typical Medicare-allowed amounts for these services range $14–$16 (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.
Practice location
Mailing address
Additional practice locations (1)
- 1959 Ne Pacific StSeattle, WA 98195-0001Phone: (206) 598-3300
Registry dates
- Enumerated
- 2006-11-15
- Last updated
- 2021-04-28
- Certified
- 2021-04-28
Frequently asked questions
- What is Mark O'Callaghan's NPI number?
- Mark O'Callaghan's National Provider Identifier (NPI) is 1023180890, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark O'Callaghan's specialty?
- Mark O'Callaghan is listed in the NPPES registry with a primary specialty of Neuroradiology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark O'Callaghan located?
- Mark O'Callaghan's practice location on file with NPPES is 209 Martin Luther King Jr Way, Tacoma, WA 98405-4265.
- What is Mark O'Callaghan's phone number?
- The practice phone number listed in the NPPES registry for Mark O'Callaghan is (253) 596-3300.
- Does Mark O'Callaghan accept Medicare?
- Mark O'Callaghan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark O'Callaghan's NPI active?
- Yes — Mark O'Callaghan's NPI (1023180890) is active in the NPPES registry as of the last update on 2021-04-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.