Nathan Mesfin, M.D.
NPI 1417305400 · Pulmonary Disease Physician · Boston, MA
Enrolled with Medicare as Practitioner - Pulmonary Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathan Mesfin, M.D. is a Pulmonary Disease Physician provider in Boston, MA (NPI 1417305400).
Provider details
- NPI number
- 1417305400
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 279103 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
10 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
80 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) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 53 | $189 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 27 | $110 |
Typical Medicare-allowed amounts for these services range $110–$189 (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)
- 1650 W Harrison St466 AtriumChicago, IL 60612-3800Phone: (312) 942-5000Fax: (312) 942-5727
Registry dates
- Enumerated
- 2016-05-31
- Last updated
- 2019-07-22
Frequently asked questions
- What is Nathan Mesfin's NPI number?
- Nathan Mesfin's National Provider Identifier (NPI) is 1417305400, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathan Mesfin's specialty?
- Nathan Mesfin is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Nathan Mesfin located?
- Nathan Mesfin's practice location on file with NPPES is 72 E Concord St # R304, Boston, MA 02118-2642.
- What is Nathan Mesfin's phone number?
- The practice phone number listed in the NPPES registry for Nathan Mesfin is (617) 358-2800.
- Does Nathan Mesfin accept Medicare?
- Nathan Mesfin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathan Mesfin's NPI active?
- Yes — Nathan Mesfin's NPI (1417305400) is active in the NPPES registry as of the last update on 2019-07-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.