Luke Messac, MD
NPI 1679065197 · Emergency Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Luke Messac, MD is a Emergency Medicine Physician provider in Boston, MA (NPI 1679065197).
Provider details
- NPI number
- 1679065197
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- LP04303 (RI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
8 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
270 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 139 | $178 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 27 | $101 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 23 | $122 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 19 | $151 |
| Ultrasound of Heart, Follow-Up93308 | 16 | $26 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More |
Practice location
Mailing address
Additional practice locations (1)
- Corner of Route N12 and N7Fort Defiance, AZ 86504-0649Phone: (928) 729-8000
Registry dates
- Enumerated
- 2018-05-31
- Last updated
- 2025-04-01
- Certified
- 2025-03-28
Frequently asked questions
- What is Luke Messac's NPI number?
- Luke Messac's National Provider Identifier (NPI) is 1679065197, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Luke Messac's specialty?
- Luke Messac is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Luke Messac located?
- Luke Messac's practice location on file with NPPES is 75 Francis St, Boston, MA 02115-6110.
- What is Luke Messac's phone number?
- The practice phone number listed in the NPPES registry for Luke Messac is (617) 732-5500.
- Does Luke Messac accept Medicare?
- Luke Messac is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Luke Messac's NPI active?
- Yes — Luke Messac's NPI (1679065197) is active in the NPPES registry as of the last update on 2025-04-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.