Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Miss Karen Josette Greer, M.D.
Pediatrics Physician in Bronx, NY · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1891779351
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Registry record
Entity type Individual (Type 1)
Name Miss Karen Josette Greer
Credential M.D.
Sex Female
Practice address 4422 3rd Ave, Mills Building, 4th Floor, Bronx, NY, 10457
Phone (718) 960-9131
Fax (718) 960-3792
Enumeration date Nov 30, 2005
Last updated in NPPES Mar 30, 2011
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 |
|---|---|---|---|
| 01986103 | Medicaid | NY | - |
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
Where does Karen Greer practice?
The practice location on file with NPPES is in Bronx, NY. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Karen Greer?
The National Provider Identifier (NPI) for Karen Greer is 1891779351, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Juan Acosta Emergency Medicine Physician · Bronx, NY NPI 1316940968 Barry Katzen Orthodontics and Dentofacial Orthopedics Dentistry · Bronx, NY NPI 1295726388 David Rubin Pediatric Emergency Medicine (Pediatrics) Physician · Bronx, NY NPI 1518958636 Bhawesh Patel Internal Medicine Physician · Bronx, NY NPI 1679557193 Mary Crocco Advanced Practice Midwife · Bronx, NY NPI 1285605949 Manisha Kulshreshtha Internal Medicine Physician · Bronx, NY NPI 1144295007 Hai Jung Rhim Pediatrics Physician · Bronx, NY NPI 1982670311 Jitendra Barmecha Internal Medicine Physician · Bronx, NY NPI 1336115567
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-03-30.