Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Marc Sadovnic, MD
Nephrology Physician in Geneva, NY · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1245313899
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Registry record
Entity type Individual (Type 1)
Name Marc Sadovnic
Credential MD
Sex Male
Practice address 200 North St, Suite 101, Geneva, NY, 14456
Phone (315) 787-5100
Fax (315) 787-5108
Enumeration date Oct 24, 2006
Last updated in NPPES Jun 28, 2010
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| P00003459 | Other | NY | R.R. MEDICARE |
| P010190338 | Other | NY | BLUE SHIELD |
| 101434BJ | Other | NY | PREFERRED CARE |
| 190338-4 | Other | NY | WORKER'S COMP |
| 3399647 | Other | NY | GHI |
| 1372976 | Medicaid | NY | - |
| P010190338 | Other | NY | BLUE CHOICE |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Marc Sadovnic?
Marc Sadovnic is registered in NPPES with the primary taxonomy of Nephrology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → William Welbourne Internal Medicine Physician · Geneva, NY NPI 1053309633 Henderson'S Drug Store, Inc. Pharmacy · Geneva, NY NPI 1639135809 M A Rachel Cormier Otolaryngology Physician · Geneva, NY NPI 1275556656 Marie-Anne Cormier Otolaryngology Physician · Geneva, NY NPI 1477576866 Michael Decicco Otolaryngology Physician · Geneva, NY NPI 1255355202 Dora Pita-Acevedo Internal Medicine Physician · Geneva, NY NPI 1548370679 Mark Ryan Internal Medicine Physician · Geneva, NY NPI 1679667513 Richard Kasulke Urology Physician · Geneva, NY NPI 1093898652
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-06-28.