ISAAC SMITH MD
NPI 1154778769
Internal Medicine in Boston, MA
About Isaac Smith Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ISAAC SMITH MD (NPI 1154778769) is an individual internal medicine provider in Boston, Massachusetts, licensed in Massachusetts (268033) and active in the NPI registry since May 2016. He is enrolled in Medicare PECOS, is affiliated with Duke University Hospital, and is a graduate of Wake Forest University School Of Medicine (2016).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Isaac Smith Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Isaac Smith reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Durham, NC 27704
- Reassigned Medicare billing, North Carolina enrollment
- 1,482 clinicians in this Medicare group
Raleigh, NC 27609
- Reassigned Medicare billing, North Carolina enrollment
- 3,671 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Duke University Hospital
Acute Care Hospitals · Durham, NCPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02114 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Isaac Smith's NPI number?
The NPI number for Isaac Smith is 1154778769. It was assigned to this individual provider in the NPPES registry on May 24, 2016.
Where is Isaac Smith located?
Isaac Smith practices at Massachusetts General Hospital 55 Fruit St., Boston, MA 02114. The listed phone number is (617) 643-0596.
What is Isaac Smith's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Isaac Smith enrolled in Medicare?
Yes. Isaac Smith is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Isaac Smith's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Isaac Smith reassigns Medicare benefits to 2 organizations: Duke University Health System, Inc. (Durham, NC) and Duke Health Integrated Practice, Inc (Raleigh, NC). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Isaac Smith's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Isaac Smith accept?
Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of North Carolina, Ambetter of Tennessee and Cigna Healthcare list Isaac Smith as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Isaac Smith affiliated with any hospitals?
According to CMS data, Isaac Smith is affiliated with Duke University Hospital.
When was this NPI record last updated?
The NPPES record for Isaac Smith was last updated on May 24, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Isaac Smith, MD · NPI 1154778769
Internal Medicine physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since May 24, 2016.
## Identity
- **NPI:** 1154778769 (Entity type: Individual)
- **Enumerated:** May 24, 2016
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 268033 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** MASSACHUSETTS GENERAL HOSPITAL, 55 FRUIT ST., Boston, MA 02114
- **Phone:** (617) 643-0596
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Duke University Health System, Inc. (NPI 1962721308, Durham, NC); Duke Health Integrated Practice, Inc (NPI 1780374884, Raleigh, NC) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Wake Forest University School Of Medicine, class of 2016
## Record status
- **NPPES last updated:** May 24, 2016
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Source: [NPI Profile](https://npiprofile.com/npi/1154778769) · Data from the CMS NPPES public registry.