John Bernard O'Brien
Marriage & Family Therapist · Modesto, CA
John Bernard O'Brien is a marriage & family therapist with a practice address in Modesto, California, and NPI 1558488437, issued on Mar 23, 2007. Check the license (California 138808, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John Bernard O'Brien
- Primary taxonomy
- Marriage & Family Therapist 106H00000X
- License numbers
- 138808 CA
C051710318 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2516 Maestro Way, Modesto, CA 95355
- Phone
- (209) 505-3900
- Enumerated
- Mar 23, 2007
- Record last updated
- Nov 17, 2023
- Medicare enrollment
- Enrolled (PECOS I20250924000978); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest marriage & family therapist records → All 59,889 in California → Look up another NPI →
Verify John Bernard O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 138808Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Sud Specialty Group - CASanta Clara, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Bernard O'Brien among 59,889 marriage & family therapist records in California
John Bernard O'Brien 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. Its NPI, issued in 2007, is newer than 7% of them.
- NPI issued2007 · 7% of these records are older, 77% newer
- In a Medicare fileYes · 4% of these records are
- In the CMS Doctors and Clinicians fileYes · 8% of these records are
- Graduated2019 · median 2013 among the 4,574 with a school on file
- Record last updated2023 · 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).
321 marriage & family therapist records list a practice address in Modesto
They are 321 of the 9,262 NPPES records with a practice address in Modesto, and 59,889 marriage & family therapist records in California.
All 59,889 in California → Every provider in Modesto → Marriage & Family Therapist nationwide →
The 8 marriage & family therapist records with the nearest ZIP codes
- Sonia AndalonModesto, CA 953551427186303
- Marla Arata, M.F.TModesto, CA 953551740381904
- Michele Corgiat, MFTModesto, CA 953551275563124
- Wess Ferguson, M.F.T.Modesto, CA 953551922027382
- Ronald Gilbert, LMFTModesto, CA 953551295852168
- Kathleen Grisez, MFTModesto, CA 953551538287289
- Kenneth HuntleyModesto, CA 953551508983685
- John Quinones, M.A., M.F.T.Modesto, CA 953551386663045
Common questions
What is John Bernard O'Brien's NPI number?
John Bernard O'Brien's National Provider Identifier (NPI) is 1558488437, issued on Mar 23, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John Bernard O'Brien located?
The NPPES record lists a practice address at 2516 Maestro Way, Modesto, CA, 95355. Phone: (209) 505-3900. Providers update this record themselves, so call before visiting.
How can I verify John Bernard O'Brien's license?
NPPES lists California license number 138808, 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. Medicare files from data.cms.gov. 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.