Mary-Helene Massullo, DO
NPI 1649348343 · Surgery Physician · Fostoria, OH
Mary-Helene Massullo, DO is a Surgery Physician provider in Fostoria, OH (NPI 1649348343).
Provider details
- NPI number
- 1649348343
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 34004036 (OH)
Specialties & taxonomies
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
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
- 2006-12-01
- Last updated
- 2015-05-19
Frequently asked questions
- What is Mary-Helene Massullo's NPI number?
- Mary-Helene Massullo's National Provider Identifier (NPI) is 1649348343, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary-Helene Massullo's specialty?
- Mary-Helene Massullo is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Mary-Helene Massullo located?
- Mary-Helene Massullo's practice location on file with NPPES is 501 Van Buren St, Fostoria, OH 44830-1534.
- What is Mary-Helene Massullo's phone number?
- The practice phone number listed in the NPPES registry for Mary-Helene Massullo is (419) 436-1035.
- Is Mary-Helene Massullo's NPI active?
- Yes — Mary-Helene Massullo's NPI (1649348343) is active in the NPPES registry as of the last update on 2015-05-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.