Joseph Marcus, MD
NPI 1669447496 · Anatomic Pathology & Clinical Pathology Physician · Saint Louis, MO
Joseph Marcus, MD is a Anatomic Pathology & Clinical Pathology Physician provider in Saint Louis, MO (NPI 1669447496).
Provider details
- NPI number
- 1669447496
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- R8544 (MO)
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
- 2006-02-23
- Last updated
- 2007-10-17
Frequently asked questions
- What is Joseph Marcus's NPI number?
- Joseph Marcus's National Provider Identifier (NPI) is 1669447496, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Marcus's specialty?
- Joseph Marcus is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Joseph Marcus located?
- Joseph Marcus's practice location on file with NPPES is 3015 N Ballas Rd, Saint Louis, MO 63131-2329.
- What is Joseph Marcus's phone number?
- The practice phone number listed in the NPPES registry for Joseph Marcus is (314) 996-4285.
- Is Joseph Marcus's NPI active?
- Yes — Joseph Marcus's NPI (1669447496) is active in the NPPES registry as of the last update on 2007-10-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.