JOHN J GUERIN M.D.
NPI 1740391432
Internal Medicine - Cardiovascular Disease in Falmouth, MA
About John J Guerin M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN J GUERIN M.D. (NPI 1740391432) is an individual cardiovascular disease provider in Falmouth, Massachusetts, licensed in Massachusetts (79325) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 17
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
John J Guerin M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show John Guerin reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Falmouth, MA 02540
- Reassigned Medicare billing, Massachusetts enrollment
- 238 clinicians in this Medicare group
Hyannis, MA 02601
- Reassigned Medicare billing, Massachusetts enrollment
- 423 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02540 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 12
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FALMOUTH, MA 02540
FALMOUTH, MA 02540
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 John Guerin's NPI number?
The NPI number for John Guerin is 1740391432. It was assigned to this individual provider in the NPPES registry on August 31, 2006.
Where is John Guerin located?
John Guerin practices at 90 Ter Heun Dr Suite 300, Falmouth, MA 02540. The listed phone number is (508) 540-0604.
What is John Guerin's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is John Guerin enrolled in Medicare?
Yes. John Guerin is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for John Guerin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Guerin reassigns Medicare benefits to 2 organizations: Physicians Of Falmouth Hospital (Falmouth, MA) and Medical Affiliates Of Cape Cod, Inc. (Hyannis, MA). 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 John Guerin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for John Guerin was last updated on March 18, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.
# John J Guerin, M.D. · NPI 1740391432
Cardiovascular Disease physician in Falmouth, Massachusetts. Individual provider, active in the CMS NPPES registry since August 31, 2006.
## Identity
- **NPI:** 1740391432 (Entity type: Individual)
- **Enumerated:** August 31, 2006
- **Primary specialty:** Internal Medicine - Cardiovascular Disease · taxonomy 207RC0000X
- **State license:** 79325 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 90 TER HEUN DR, SUITE 300, Falmouth, MA 02540-2533
- **Phone:** (508) 540-0604 · **Fax:** (508) 457-0129
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): Physicians Of Falmouth Hospital (NPI 1821363698, Falmouth, MA); Medical Affiliates Of Cape Cod, Inc. (NPI 1770534927, Hyannis, MA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 18, 2009
- **Other identifiers:** Other 754160 (MA); Other 25-00648 (MA); Medicare UPIN E45926; and 14 more
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Source: [NPI Profile](https://npiprofile.com/npi/1740391432) · Data from the CMS NPPES public registry.