Gregory W. Dy, AMFT
Marriage & Family Therapist · San Leandro, CA
Gregory W. Dy, AMFT is a marriage & family therapist with a practice address in San Leandro, California, and NPI 1720568959, issued on Aug 16, 2018. Check the license (California 119004, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Gregory W. Dy
- Credential
- AMFT
- Primary taxonomy
- Marriage & Family Therapist 106H00000X
- License number
- 119004 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2401 Merced St, San Leandro, CA 94577
- Phone
- (510) 907-0186
- Enumerated
- Aug 16, 2018
- Record last updated
- Feb 11, 2022
- Entity
- Type 1 · individual
8 nearest marriage & family therapist records → All 59,889 in California → Look up another NPI →
Also registered at 2401 Merced St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Gregory W. Dy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 119004Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Gregory W. Dy among 59,889 marriage & family therapist records in California
Gregory W. Dy, AMFT is one of 59,889 marriage & family therapist records with a practice address in California. 4% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2018, is newer than 61% of them.
- NPI issued2018 · 61% of these records are older, 34% newer
- In a Medicare fileNo · 4% of these records are
- In the CMS Doctors and Clinicians fileNo · 8% of these records are
- Record last updated2022 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 106H00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
322 marriage & family therapist records list a practice address in San Leandro
They are 322 of the 4,976 NPPES records with a practice address in San Leandro, and 59,889 marriage & family therapist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 59,889 in California → Every provider in San Leandro → Marriage & Family Therapist nationwide →
The 8 marriage & family therapist records with the nearest ZIP codes
- Jessica Barber, MASan Leandro, CA 945771134258494
- Amy Bunn, M.A.San Leandro, CA 945771073639720
- Vanessa GarciaSan Leandro, CA 945771528196904
- Michael Green, MFTSan Leandro, CA 945771467589275
- Shandra Guzman Park, LMFTSan Leandro, CA 945771003975855
- Dayna Hunt, M.S., MFTSan Leandro, CA 945771629104567
- Aaron Leavy, MFT-INTERNSan Leandro, CA 945771053448126
- Dennis Newlin, MFTSan Leandro, CA 945771093833485
Common questions
What is Gregory W. Dy, AMFT's NPI number?
Gregory W. Dy, AMFT's National Provider Identifier (NPI) is 1720568959, issued on Aug 16, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Gregory W. Dy, AMFT located?
The NPPES record lists a practice address at 2401 Merced St, San Leandro, CA, 94577. Phone: (510) 907-0186. Providers update this record themselves, so call before visiting.
How can I verify Gregory W. Dy, AMFT's license?
NPPES lists California license number 119004, as entered by the provider. Search the California 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.