DR. DONNA LESSER D.O.
NPI 1932209053
Internal Medicine - Infectious Disease in Smithtown, NY
About Dr. Donna Lesser D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. DONNA LESSER D.O. (NPI 1932209053) is an individual infectious disease provider in Smithtown, New York, licensed in New York (00188835) and active in the NPI registry since September 2006. She is enrolled in Medicare PECOS, is affiliated with St Catherine Of Siena Hospital Medical Center, and is a graduate of College Of Osteo Med Of The Pacific At Pomona (1989).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
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
Dr. Donna Lesser D.o. 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 Reassignment
Medicare enrollment records show Donna Lesser reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
West Sayville, NY 11796
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Chs Physician Partners PC
- 944 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 7
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.
St Catherine Of Siena Hospital Medical Center
Acute Care Hospitals · Smithtown, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11787 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.
SMITHTOWN, NY 11787
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 Donna Lesser's NPI number?
The NPI number for Donna Lesser is 1932209053. It was assigned to this individual provider in the NPPES registry on September 25, 2006.
Where is Donna Lesser located?
Donna Lesser practices at 48 Route 25A Suite 308, Smithtown, NY 11787. The listed phone number is (631) 864-6111.
What is Donna Lesser's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.
Is Donna Lesser enrolled in Medicare?
Yes. Donna Lesser 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 organization bills Medicare for Donna Lesser's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Donna Lesser reassigns Medicare benefits to Chs Physician Partners, P.C (West Sayville, NY). The 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 Donna Lesser's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Donna Lesser affiliated with any hospitals?
According to CMS data, Donna Lesser is affiliated with St Catherine Of Siena Hospital Medical Center.
When was this NPI record last updated?
The NPPES record for Donna Lesser was last updated on April 4, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Dr. Donna Lesser, D.O. · NPI 1932209053
Infectious Disease physician in Smithtown, New York. Individual provider, active in the CMS NPPES registry since September 25, 2006.
## Identity
- **NPI:** 1932209053 (Entity type: Individual)
- **Enumerated:** September 25, 2006
- **Primary specialty:** Internal Medicine - Infectious Disease · taxonomy 207RI0200X
- **State license:** 00188835 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 48 ROUTE 25A, SUITE 308, Smithtown, NY 11787-3233
- **Phone:** (631) 864-6111
## 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:** Chs Physician Partners, P.C (NPI 1679823512, West Sayville, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** College Of Osteo Med Of The Pacific At Pomona, class of 1989
## Record status
- **NPPES last updated:** April 4, 2018
- **Other identifiers:** Medicaid 02154052 (NY)
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Source: [NPI Profile](https://npiprofile.com/npi/1932209053) · Data from the CMS NPPES public registry.