Isaac Smith, MD
NPI 1154778769 · Internal Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Isaac Smith, MD is a Internal Medicine Physician provider in Boston, MA (NPI 1154778769).
Provider details
- NPI number
- 1154778769
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 268033 (MA)
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
10 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
179 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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 44 | $15 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 42 | $74 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 31 | $87 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 26 | $130 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 22 | $111 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 95 | 30 |
| Hydroxychloroquine Sulfate | 63 | 21 |
| Methotrexate Sodiumbrand: Methotrexate | 49 | 17 |
| Mycophenolate Mofetil | 20 | — |
| Azathioprine | 19 | — |
| Leflunomide | 19 | — |
| Alendronate Sodium | 18 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-05-24
- Last updated
- 2016-05-24
Frequently asked questions
- What is Isaac Smith's NPI number?
- Isaac Smith's National Provider Identifier (NPI) is 1154778769, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Isaac Smith's specialty?
- Isaac Smith is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Isaac Smith located?
- Isaac Smith's practice location on file with NPPES is Massachusetts General Hospital, Boston, MA 02114.
- What is Isaac Smith's phone number?
- The practice phone number listed in the NPPES registry for Isaac Smith is (617) 643-0596.
- Does Isaac Smith accept Medicare?
- Isaac Smith is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Isaac Smith's NPI active?
- Yes — Isaac Smith's NPI (1154778769) is active in the NPPES registry as of the last update on 2016-05-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.