Ronald Mark Korwald, ADDICTIONOLOGIST
Addiction (Substance Use Disorder) Counselor · Belmont, CA
Ronald Mark Korwald, ADDICTIONOLOGIST is an addiction (substance use disorder) counselor with a practice address in Belmont, California, and NPI 1275769879, issued on Jun 9, 2009. Check the license with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Ronald Mark Korwald
- Credential
- ADDICTIONOLOGIST
- Primary taxonomy
- Addiction (Substance Use Disorder) Counselor 101YA0400X
- Practice location
- 400 Harbor Blvd, Belmont, CA 94002
- Phone
- (650) 802-6429
- Enumerated
- Jun 9, 2009
- Record last updated
- Jun 9, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (650) 802-6440
- Entity
- Type 1 · individual
Also registered at 400 Harbor Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Elisabeth MeisterStudent in an Organized Health Care Education/Training Program1043591621
- Denise MoselyBehavior Analyst1093061186
- Adrianna MuckelBehavior Analyst1558617647
- David MurrietaSchool Counselor1669749719
Verify Ronald Mark Korwald in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
14 addiction (substance use disorder) counselor records list a practice address in Belmont
They are 14 of the 324 NPPES records with a practice address in Belmont, 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 14 in Belmont → All 27,741 in California → Every provider in Belmont →
Other addiction (substance use disorder) counselor records in California
- Sean A Jerome, CADCIICosta Mesa, CA1831884550
- Carrie AamodtVisalia, CA1932661311
- Emory Aaron, CCAPP C4321214Los Angeles, CA1073980801
- Lisa Aaron, CASACCulver City, CA1356090849
- Michael Abacherli, JD, RADTSan Jacinto, CA1235826983
- Victor AbadEl Cajon, CA1205562238
- Sean AbairTaft, CA1174084347
- Maira AbalosDelano, CA1508452038
- Jazmine AbanicoVentura, CA1851964613
- Israel Abarca, CAADESan Francisco, CA1114126950
Common questions
What is Ronald Mark Korwald, ADDICTIONOLOGIST's NPI number?
Ronald Mark Korwald, ADDICTIONOLOGIST's National Provider Identifier (NPI) is 1275769879, issued on Jun 9, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Ronald Mark Korwald, ADDICTIONOLOGIST located?
The NPPES record lists a practice address at 400 Harbor Blvd, Belmont, CA, 94002. Phone: (650) 802-6429. Providers update this record themselves, so call before visiting.
How can I verify Ronald Mark Korwald, ADDICTIONOLOGIST's license?
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.