Marissa Weiss, MD
NPI 1477895951 · Reproductive Endocrinology Physician · Philadelphia, PA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marissa Weiss, MD is a Reproductive Endocrinology Physician provider in Philadelphia, PA (NPI 1477895951).
Provider details
- NPI number
- 1477895951
- Entity type
- Individual
- Primary specialty
- Reproductive Endocrinology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 4301501956 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 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
- 2013-03-21
- Last updated
- 2022-08-09
- Certified
- 2022-08-09
Frequently asked questions
- What is Marissa Weiss's NPI number?
- Marissa Weiss's National Provider Identifier (NPI) is 1477895951, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marissa Weiss's specialty?
- Marissa Weiss is listed in the NPPES registry with a primary specialty of Reproductive Endocrinology Physician (Allopathic & Osteopathic Physicians).
- Where is Marissa Weiss located?
- Marissa Weiss's practice location on file with NPPES is 3701 Market St., Philadelphia, PA 19104-5502.
- What is Marissa Weiss's phone number?
- The practice phone number listed in the NPPES registry for Marissa Weiss is (215) 662-6100.
- Does Marissa Weiss accept Medicare?
- Marissa Weiss is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marissa Weiss's NPI active?
- Yes — Marissa Weiss's NPI (1477895951) is active in the NPPES registry as of the last update on 2022-08-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.