Lynn Marcus, M.S.
NPI 1225128549 · Marriage & Family Therapist · Castro Valley, CA
Lynn Marcus, M.S. is a Marriage & Family Therapist provider in Castro Valley, CA (NPI 1225128549).
Provider details
- NPI number
- 1225128549
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- M.S.
- Sex
- Female
- Sole proprietor
- Yes
- License
- MFC30429 (CA)
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
100% 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
- 2006-10-15
- Last updated
- 2020-03-16
- Certified
- 2020-03-16
Frequently asked questions
- What is Lynn Marcus's NPI number?
- Lynn Marcus's National Provider Identifier (NPI) is 1225128549, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lynn Marcus's specialty?
- Lynn Marcus is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Lynn Marcus located?
- Lynn Marcus's practice location on file with NPPES is 20200 Redwood Rd, Castro Valley, CA 94546-4313.
- What is Lynn Marcus's phone number?
- The practice phone number listed in the NPPES registry for Lynn Marcus is (510) 632-2244.
- Is Lynn Marcus's NPI active?
- Yes — Lynn Marcus's NPI (1225128549) is active in the NPPES registry as of the last update on 2020-03-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.