Frederick a Grassin, D.O.
NPI 1770753790 · Family Medicine Physician · New Port Richey, FL
Frederick a Grassin, D.O. is a Family Medicine Physician organization in New Port Richey, FL (NPI 1770753790).
Provider details
- NPI number
- 1770753790
- Entity type
- Organization
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Frederick Grassin, Owner(727) 849-5445
- License
- OS1108 (FL)
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
18 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
- 2008-03-05
- Last updated
- 2008-03-05
Frequently asked questions
- What is Frederick a Grassin, D.O.'s NPI number?
- Frederick a Grassin, D.O.'s National Provider Identifier (NPI) is 1770753790, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Frederick a Grassin, D.O.?
- Frederick a Grassin, D.O. is classified in the NPPES registry as Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Frederick a Grassin, D.O. located?
- Frederick a Grassin, D.O.'s practice location on file with NPPES is 5901 Main St, New Port Richey, FL 34652-2713.
- What is Frederick a Grassin, D.O.'s phone number?
- The practice phone number listed in the NPPES registry for Frederick a Grassin, D.O. is (727) 849-5445.
- Who is the authorized official for Frederick a Grassin, D.O.?
- The authorized official listed on Frederick a Grassin, D.O.'s NPPES record is Frederick Grassin, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Frederick a Grassin, D.O.'s NPI active?
- Yes — Frederick a Grassin, D.O.'s NPI (1770753790) is active in the NPPES registry as of the last update on 2008-03-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.