MARK A WEISSMAN MD
NPI 1003875691
General Practice in Naples, FL
About Mark A Weissman Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK A WEISSMAN MD (NPI 1003875691) is an individual general practice provider in Naples, Florida, licensed in Florida (ME136346) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in Buffalo.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mark A Weissman Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
6Medicare enrollment records show Mark Weissman reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Naples, FL 34110
- Reassigned Medicare billing, Florida enrollment
- 683 clinicians in this Medicare group
Buffalo, NY 14220
- Reassigned Medicare billing, New York enrollment
- 499 clinicians in this Medicare group
Cheektowaga, NY 14225
- Reassigned Medicare billing, New York enrollment
- 515 clinicians in this Medicare group
Kenmore, NY 14217
- Reassigned Medicare billing, New York enrollment
- 271 clinicians in this Medicare group
Kenmore, NY 14217
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Bartels,powalski & Weissman, Mds,pc
- 8 clinicians in this Medicare group
Lewiston, NY 14092
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Mount St. Marys Hospital Of Niagara Falls
- 289 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.
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 Mark Weissman's NPI number?
The NPI number for Mark Weissman is 1003875691. It was assigned to this individual provider in the NPPES registry on March 21, 2006.
Where is Mark Weissman located?
Mark Weissman practices at 3325 Beck Boulevard Suite 721, Naples, FL 34114. The listed phone number is (716) 861-0055.
What is Mark Weissman's specialty?
The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.
Is Mark Weissman enrolled in Medicare?
Yes. Mark Weissman is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Mark Weissman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Weissman reassigns Medicare benefits to 6 organizations: Ob Hospitalist Group LLC (Naples, FL), Mercy Hospital Of Buffalo (Buffalo, NY), Sisters Of Charity Hospital Of Buffalo New York (Cheektowaga, NY), Kenmore Mercy Hospital (Kenmore, NY), Bartels, Powalski & Weissman, MD PC (Kenmore, NY) and 1 more organization, listed in the Medicare section above. 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 Mark Weissman'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 Mark Weissman was last updated on August 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.
# Mark A Weissman, MD · NPI 1003875691
General Practice physician in Naples, Florida. Individual provider, active in the CMS NPPES registry since March 21, 2006.
## Identity
- **NPI:** 1003875691 (Entity type: Individual)
- **Enumerated:** March 21, 2006
- **Primary specialty:** General Practice · taxonomy 208D00000X
- **State license:** ME136346 (Florida)
- **Sole proprietor:** No
## Practice location
- **Address:** 3325 BECK BOULEVARD, SUITE 721, Naples, FL 34114
- **Phone:** (716) 861-0055
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Ob Hospitalist Group LLC (NPI 1811652704, Naples, FL); Mercy Hospital Of Buffalo (NPI 1144262908, Buffalo, NY); Sisters Of Charity Hospital Of Buffalo New York (NPI 1043455199, Cheektowaga, NY); Kenmore Mercy Hospital (NPI 1770598104, Kenmore, NY); Bartels, Powalski & Weissman, MD PC (NPI 1326060369, Kenmore, NY); and 1 more · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 6, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1003875691) · Data from the CMS NPPES public registry.