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John Margolis, MD
NPI 1346231669 · Internal Medicine Physician · Laurel, MD
John Margolis, MD is a Internal Medicine Physician provider in Laurel, MD (NPI 1346231669).
Provider details
- NPI number
- 1346231669
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- License
- D25430 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
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
13952 Baltimore Avenue
Laurel, MD 20707
Phone: (301) 490-1990
Fax: (301) 490-8750
Street-level locationGet directions
Mailing address
13952 Baltimore Avenue
Laurel, MD 20707
Registry dates
- Enumerated
- 2005-11-04
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Margolis's NPI number?
- John Margolis's National Provider Identifier (NPI) is 1346231669, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Margolis's specialty?
- John Margolis is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Margolis located?
- John Margolis's practice location on file with NPPES is 13952 Baltimore Avenue, Laurel, MD 20707.
- What is John Margolis's phone number?
- The practice phone number listed in the NPPES registry for John Margolis is (301) 490-1990.
- Is John Margolis's NPI active?
- Yes — John Margolis's NPI (1346231669) 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.