Mark Zimmermann, Lcsw, PLLC
NPI 1386005213 · Clinical Social Worker · Bethesda, MD
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Zimmermann, Lcsw, PLLC is a Clinical Social Worker organization in Bethesda, MD (NPI 1386005213).
Provider details
- NPI number
- 1386005213
- Entity type
- Organization
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Organization subpart
- No
- Authorized official
- Mark Zimmermann, Owner(917) 830-3463
- License
- 081845 (NY)
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
10 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
Other names (DBA / former)
- Other name
- Mark Zimmermann
Registry dates
- Enumerated
- 2016-03-20
- Last updated
- 2024-11-15
- Certified
- 2024-11-15
Frequently asked questions
- What is Mark Zimmermann, Lcsw, PLLC's NPI number?
- Mark Zimmermann, Lcsw, PLLC's National Provider Identifier (NPI) is 1386005213, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Mark Zimmermann, Lcsw, PLLC?
- Mark Zimmermann, Lcsw, PLLC is classified in the NPPES registry as Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Mark Zimmermann, Lcsw, PLLC located?
- Mark Zimmermann, Lcsw, PLLC's practice location on file with NPPES is 4710 Elm St Apt W1304, Bethesda, MD 20814-3828.
- What is Mark Zimmermann, Lcsw, PLLC's phone number?
- The practice phone number listed in the NPPES registry for Mark Zimmermann, Lcsw, PLLC is (917) 830-3463.
- Does Mark Zimmermann, Lcsw, PLLC accept Medicare?
- Mark Zimmermann, Lcsw, PLLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Mark Zimmermann, Lcsw, PLLC?
- The authorized official listed on Mark Zimmermann, Lcsw, PLLC's NPPES record is Mark Zimmermann, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Mark Zimmermann, Lcsw, PLLC's NPI active?
- Yes — Mark Zimmermann, Lcsw, PLLC's NPI (1386005213) is active in the NPPES registry as of the last update on 2024-11-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.