Karla J. Gesslein, PA
Physician Assistant · Bay Shore, NY
Karla J. Gesslein, PA is a physician assistant with a practice address in Bay Shore, New York, and NPI 1558395400, issued on Jul 10, 2006. Check the license (New York 002465, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karla J. Gesslein
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 002465 NY
Self-reported in NPPES; status is on the state search - Practice location
- 301 E Main St, Bay Shore, NY 11706
- Phone
- (631) 968-3000
- Enumerated
- Jul 10, 2006
- Record last updated
- Oct 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 15,555 in New York → Look up another NPI →
Also registered at 301 E Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Karla J. Gesslein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this profession
Search for license 002465Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 91.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Karla J. Gesslein among 15,555 physician assistant records in New York
Karla J. Gesslein, PA is one of 15,555 physician assistant records with a practice address in New York. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 1% of them.
- NPI issued2006 · 1% of these records are older, 87% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 52% of these records are
- Record last updated2007 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
142 physician assistant records list a practice address in Bay Shore
They are 142 of the 1,931 NPPES records with a practice address in Bay Shore, and 15,555 physician assistant records in New York.
All 15,555 in New York → Every provider in Bay Shore → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Gayle Bergner-Carey, PABay Shore, NY 117061982657821
- Amy Contino-Garrett, PABay Shore, NY 117061336167584
- Cynthia Coons, PABay Shore, NY 117061518985712
- Deborah Crossman, PABay Shore, NY 117061588682736
- Michele Crowell, PABay Shore, NY 117061366476202
- Donna Digregorio, PABay Shore, NY 117061093762064
- John Hallowell, PA-C, MBABay Shore, NY 117061629066303
- Kathleen Makarius, PABay Shore, NY 117061851325476
Common questions
What is Karla J. Gesslein, PA's NPI number?
Karla J. Gesslein, PA's National Provider Identifier (NPI) is 1558395400, issued on Jul 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Karla J. Gesslein, PA located?
The NPPES record lists a practice address at 301 E Main St, Bay Shore, NY, 11706. Phone: (631) 968-3000. Providers update this record themselves, so call before visiting.
How can I verify Karla J. Gesslein, PA's license?
NPPES lists New York license number 002465, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
What is Karla J. Gesslein, PA's MIPS final score?
The 2023 MIPS final score is 91.3 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.