Louis Diamond, MD
NPI 1962775502 · Internal Medicine Physician · Rockville, MD
Enrolled with Medicare as Order and Referring Only - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Louis Diamond, MD is a Internal Medicine Physician provider in Rockville, MD (NPI 1962775502).
Provider details
- NPI number
- 1962775502
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- D0014930 (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
14 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
- 2012-02-13
- Last updated
- 2012-02-13
Frequently asked questions
- What is Louis Diamond's NPI number?
- Louis Diamond's National Provider Identifier (NPI) is 1962775502, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Louis Diamond's specialty?
- Louis Diamond is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Louis Diamond located?
- Louis Diamond's practice location on file with NPPES is 5809 Nicholson Ln, Rockville, MD 20852-5701.
- What is Louis Diamond's phone number?
- The practice phone number listed in the NPPES registry for Louis Diamond is (301) 468-1166.
- Does Louis Diamond accept Medicare?
- Louis Diamond is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Louis Diamond's NPI active?
- Yes — Louis Diamond's NPI (1962775502) is active in the NPPES registry as of the last update on 2012-02-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.