John Mahlmann, PH.D., LCSW-C
NPI 1083835524 · Clinical Social Worker · Rockville, MD
John Mahlmann, PH.D., LCSW-C is a Clinical Social Worker provider in Rockville, MD (NPI 1083835524).
Provider details
- NPI number
- 1083835524
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- PH.D., LCSW-C
- Sex
- Male
- Sole proprietor
- Yes
- License
- 07157 (MD)
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
- 2007-05-01
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Mahlmann's NPI number?
- John Mahlmann's National Provider Identifier (NPI) is 1083835524, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Mahlmann's specialty?
- John Mahlmann is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is John Mahlmann located?
- John Mahlmann's practice location on file with NPPES is 414 Hungerford Dr, Rockville, MD 20850-4125.
- What is John Mahlmann's phone number?
- The practice phone number listed in the NPPES registry for John Mahlmann is (301) 452-2486.
- Is John Mahlmann's NPI active?
- Yes — John Mahlmann's NPI (1083835524) 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.