John R. Melnick, M. D. & Associates
NPI 1427139351 · Internal Medicine Physician · Gaithersburg, MD
John R. Melnick, M. D. & Associates is a Internal Medicine Physician organization in Gaithersburg, MD (NPI 1427139351).
Provider details
- NPI number
- 1427139351
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- John Melnick, Owner/Manager(301) 258-0944
- License
- D0019294 (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
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
- 2006-10-18
- Last updated
- 2008-03-03
Frequently asked questions
- What is John R. Melnick, M. D. & Associates's NPI number?
- John R. Melnick, M. D. & Associates's National Provider Identifier (NPI) is 1427139351, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is John R. Melnick, M. D. & Associates?
- John R. Melnick, M. D. & Associates is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John R. Melnick, M. D. & Associates located?
- John R. Melnick, M. D. & Associates's practice location on file with NPPES is 911 Russell Ave, Gaithersburg, MD 20879-3266.
- What is John R. Melnick, M. D. & Associates's phone number?
- The practice phone number listed in the NPPES registry for John R. Melnick, M. D. & Associates is (301) 258-0944.
- Who is the authorized official for John R. Melnick, M. D. & Associates?
- The authorized official listed on John R. Melnick, M. D. & Associates's NPPES record is John Melnick, Owner/Manager. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is John R. Melnick, M. D. & Associates's NPI active?
- Yes — John R. Melnick, M. D. & Associates's NPI (1427139351) is active in the NPPES registry as of the last update on 2008-03-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.