G. Grant Holtzberg, PH.D.
Psychologist · West Hartford, CT
G. Grant Holtzberg, PH.D. is a psychologist with a practice address in West Hartford, Connecticut, and NPI 1710900741, issued on Jul 25, 2006. Check the license (Connecticut 1538, as entered in NPPES) with the Connecticut board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- G. Grant Holtzberg
- Credential
- PH.D.
- Primary taxonomy
- Psychologist 103T00000X
- License number
- 1538 CT
Self-reported in NPPES; status is on the state search - Practice location
- 345 N Main St, West Hartford, CT 06117
- Phone
- (860) 233-9772
- Enumerated
- Jul 25, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (860) 236-9402
- Entity
- Type 1 · individual
Also registered at 345 N Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maria BastoneBehavior Technician1871366799
- Karen Benjamin, L.C.S.W.Clinical Social Worker1750304861
- Jeryl Brown, MSW, LCSWClinical Social Worker1417970310
- Lucretia ButlerBehavior Analyst1801669049
- Eva Carignan, MDObstetrics & Gynecology Physician1245421114
- Claudia Coplein, DO, MPH, MBA, CPEPreventive Medicine/Occupational Environmental Medicine Physician1851554844
Verify G. Grant Holtzberg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
Search for license 1538Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
34 psychologist records list a practice address in West Hartford
They are 34 of the 1,653 NPPES records with a practice address in West Hartford, and 649 psychologist records in Connecticut. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 34 in West Hartford → All 649 in Connecticut → Every provider in West Hartford →
Other psychologist records in Connecticut
- David Abrams, PSY.D.Guilford, CT1427231752
- Joshua Acocella-Stollerman, PSY.D.East Haddam, CT1043515356
- Harry Adamakos, PH.D.Bridgeport, CT1225172786
- Ragne Adams, M. A.New Haven, CT1922260306
- Thomas Adams, PHDNew Haven, CT1639683188
- Jessica Addington, PSY.D.Glastonbury, CT1881817013
- Frederic Agate, PHDDarien, CT1699501353
- Rosemary AielloPlainville, CT1649318304
- Maysa AkbarNew Haven, CT1720056864
- Eguono Akpoduado, PSY.D.Groton, CT1245956978
Common questions
What is G. Grant Holtzberg, PH.D.'s NPI number?
G. Grant Holtzberg, PH.D.'s National Provider Identifier (NPI) is 1710900741, issued on Jul 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is G. Grant Holtzberg, PH.D. located?
The NPPES record lists a practice address at 345 N Main St, West Hartford, CT, 06117. Phone: (860) 233-9772. Providers update this record themselves, so call before visiting.
How can I verify G. Grant Holtzberg, PH.D.'s license?
NPPES lists Connecticut license number 1538, as entered by the provider. Search the Connecticut board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.