Charles Ruby
NPI 1649310715 · Clinical Psychologist · Waldorf, MD
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Ruby is a Clinical Psychologist provider in Waldorf, MD (NPI 1649310715).
Provider details
- NPI number
- 1649310715
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 3372 (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
- 2007-02-07
- Last updated
- 2007-07-08
Frequently asked questions
- What is Charles Ruby's NPI number?
- Charles Ruby's National Provider Identifier (NPI) is 1649310715, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Ruby's specialty?
- Charles Ruby is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Charles Ruby located?
- Charles Ruby's practice location on file with NPPES is 603 Post Office Rd, Waldorf, MD 20602-1914.
- What is Charles Ruby's phone number?
- The practice phone number listed in the NPPES registry for Charles Ruby is (301) 705-7593.
- Does Charles Ruby accept Medicare?
- Charles Ruby is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Ruby's NPI active?
- Yes — Charles Ruby's NPI (1649310715) 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.