Mark Mollenhauer, M.D.
NPI 1851366264 · Psychiatry Physician · Bethesda, MD
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Mollenhauer, M.D. is a Psychiatry Physician provider in Bethesda, MD (NPI 1851366264).
Provider details
- NPI number
- 1851366264
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- D42846 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
- 2006-02-20
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mark Mollenhauer's NPI number?
- Mark Mollenhauer's National Provider Identifier (NPI) is 1851366264, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Mollenhauer's specialty?
- Mark Mollenhauer is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Mollenhauer located?
- Mark Mollenhauer's practice location on file with NPPES is 5415 W Cedar Ln, Bethesda, MD 20814-1515.
- What is Mark Mollenhauer's phone number?
- The practice phone number listed in the NPPES registry for Mark Mollenhauer is (301) 897-8779.
- Does Mark Mollenhauer accept Medicare?
- Mark Mollenhauer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Mollenhauer's NPI active?
- Yes — Mark Mollenhauer's NPI (1851366264) 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.