Michael Chatham
NPI 1811021850 · Addiction (Substance Use Disorder) Counselor · Santa Rosa, CA
Michael Chatham is a Addiction (Substance Use Disorder) Counselor provider in Santa Rosa, CA (NPI 1811021850).
Provider details
- NPI number
- 1811021850
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-14
- Last updated
- 2007-07-08
Frequently asked questions
- What is Michael Chatham's NPI number?
- Michael Chatham's National Provider Identifier (NPI) is 1811021850, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Chatham's specialty?
- Michael Chatham is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Michael Chatham located?
- Michael Chatham's practice location on file with NPPES is 1430 Neotomas Ave, Santa Rosa, CA 95405-7575.
- What is Michael Chatham's phone number?
- The practice phone number listed in the NPPES registry for Michael Chatham is (707) 565-7450.
- Is Michael Chatham's NPI active?
- Yes — Michael Chatham's NPI (1811021850) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.