Jeffrey Karsdon, M.D.
NPI 1689843088 · Neonatal-Perinatal Medicine Physician · Baldwin, NY
Jeffrey Karsdon, M.D. is a Neonatal-Perinatal Medicine Physician provider in Baldwin, NY (NPI 1689843088).
Provider details
- NPI number
- 1689843088
- Entity type
- Individual
- Primary specialty
- Neonatal-Perinatal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 176309 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-02-29
- Last updated
- 2013-11-19
Frequently asked questions
- What is Jeffrey Karsdon's NPI number?
- Jeffrey Karsdon's National Provider Identifier (NPI) is 1689843088, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jeffrey Karsdon's specialty?
- Jeffrey Karsdon is listed in the NPPES registry with a primary specialty of Neonatal-Perinatal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jeffrey Karsdon located?
- Jeffrey Karsdon's practice location on file with NPPES is 908 Northern Blvd, Baldwin, NY 11510-4936.
- What is Jeffrey Karsdon's phone number?
- The practice phone number listed in the NPPES registry for Jeffrey Karsdon is (516) 223-7915.
- Is Jeffrey Karsdon's NPI active?
- Yes — Jeffrey Karsdon's NPI (1689843088) is active in the NPPES registry as of the last update on 2013-11-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.