Dr. Don Greif PHD
About this NPIWhat this record shows.
NPI 1275733271 is registered to Dr. Don Greif PHD, a Clinical Psychologist practising at 603 West 111th St, Suite 5e in New York, New York. Clinical Psychologist is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Dr. Don Greif PHD has been enumerated in the National Provider Identifier (NPI) registry since 2007.
Your brand here.
Medicare enrollment
This provider holds a Medicare enrollment on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
Practitioner
- I20080211000302Clinical PsychologistNY
Source: CMS PECOS public enrollment file.
Insurance & acceptsHow to confirm coverage.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans Dr. Don Greif PHD accepts. To confirm in-network status with your specific health plan, contact Dr. Don Greif PHD directly at (212) 666-3550.
Frequently asked
Yes. NPI 1275733271 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Clinical Psychologist is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (212) 666-3550.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. Dr. Don Greif PHD is a Type-1 individual NPI.