Calvin Schaffer, MD
NPI 1083317853 · Pediatrics Physician · Portland, ME
Enrolled with Medicare as Order and Referring Only - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Calvin Schaffer, MD is a Pediatrics Physician provider in Portland, ME (NPI 1083317853).
Provider details
- NPI number
- 1083317853
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 111 Michigan Ave Nw Ste M-4800Washington, DC 20010-2916Phone: (888) 884-2327
Registry dates
- Enumerated
- 2023-03-22
- Last updated
- 2026-04-20
- Certified
- 2026-04-20
Frequently asked questions
- What is Calvin Schaffer's NPI number?
- Calvin Schaffer's National Provider Identifier (NPI) is 1083317853, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Calvin Schaffer's specialty?
- Calvin Schaffer is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Calvin Schaffer located?
- Calvin Schaffer's practice location on file with NPPES is 22 Bramhall St, Portland, ME 04102-3175.
- What is Calvin Schaffer's phone number?
- The practice phone number listed in the NPPES registry for Calvin Schaffer is (207) 662-0111.
- Does Calvin Schaffer accept Medicare?
- Calvin Schaffer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Calvin Schaffer's NPI active?
- Yes — Calvin Schaffer's NPI (1083317853) is active in the NPPES registry as of the last update on 2026-04-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.