NPPES file of Aug 9, 2026

Brian Greenwald, CADC II

Addiction (Substance Use Disorder) Counselor · Newport Beach, CA

Brian Greenwald, CADC II is an addiction (substance use disorder) counselor with a practice address in Newport Beach, California, and NPI 1164000667, issued on Mar 29, 2021. Check the license (California A046300917, 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.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1164000667
Name
Brian Greenwald
Credential
CADC II
Primary taxonomy
Addiction (Substance Use Disorder) Counselor 101YA0400X
License number
A046300917 CA
Self-reported in NPPES; status is on the state search
Practice location
20051 SW Birch St, Newport Beach, CA 92660
Phone
(213) 924-6442
Enumerated
Mar 29, 2021
Record last updated
Apr 20, 2021 (not updated in 5 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest addiction (substance use disorder) counselor records → All 27,741 in California → Look up another NPI →

Also registered at 20051 SW Birch St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. George Brouillet, AMFTMarriage & Family Therapist1104692524
  2. Brooke Buccola, PSYD, LMFTMarriage & Family Therapist1952677890
  3. Andrew Delgaudio, RADTAddiction (Substance Use Disorder) Counselor1164184602
  4. Ryan DillAddiction (Substance Use Disorder) Counselor1720669799
  5. Alexi Farmer, CADT-IIAddiction (Substance Use Disorder) Counselor1659147064
  6. Bryan Johnson, AMFTMarriage & Family Therapist1811763220

Verify Brian Greenwald in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license A046300917    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

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Brian Greenwald among 27,741 addiction (substance use disorder) counselor records in California

Brian Greenwald, CADC II is one of 27,741 addiction (substance use disorder) counselor records with a practice address in California. under 1% 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 2021, is newer than 64% of them.

  • NPI issued2021 · 64% of these records are older, 30% newer
  • In a Medicare fileNo · under 1% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2021 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 101YA0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

51 addiction (substance use disorder) counselor records list a practice address in Newport Beach

They are 51 of the 4,414 NPPES records with a practice address in Newport Beach, and 27,741 addiction (substance use disorder) counselor records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 27,741 in California → Every provider in Newport Beach → Addiction (Substance Use Disorder) Counselor nationwide →

The 8 addiction (substance use disorder) counselor records with the nearest ZIP codes

  1. Arlene Billson, MSNewport Beach, CA 926601336423557
  2. Erica Campos Rogers, CATC 197173 INewport Beach, CA 926601265969976
  3. Aja ChavezNewport Beach, CA 926601811539794
  4. Allyson FluorNewport Beach, CA 926601669945556
  5. William GoddenNewport Beach, CA 926601073199907
  6. Melissa Hasin, LMFTNewport Beach, CA 926601033696786
  7. William Kyriakakos, CADC II A054100319Newport Beach, CA 926601174023832
  8. Rolando Navarro, CADC-CASNewport Beach, CA 926601376721431

Common questions

What is Brian Greenwald, CADC II's NPI number?

Brian Greenwald, CADC II's National Provider Identifier (NPI) is 1164000667, issued on Mar 29, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Brian Greenwald, CADC II located?

The NPPES record lists a practice address at 20051 SW Birch St, Newport Beach, CA, 92660. Phone: (213) 924-6442. Providers update this record themselves, so call before visiting.

How can I verify Brian Greenwald, CADC II's license?

NPPES lists California license number A046300917, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.