Frederick Ludwig, M.D.
NPI 1992877989 · Surgery Physician · Sault Sainte Marie, MI
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Frederick Ludwig, M.D. is a Surgery Physician provider in Sault Sainte Marie, MI (NPI 1992877989).
Provider details
- NPI number
- 1992877989
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 43010227693 (MI)
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
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
- 2006-11-14
- Last updated
- 2007-07-08
Frequently asked questions
- What is Frederick Ludwig's NPI number?
- Frederick Ludwig's National Provider Identifier (NPI) is 1992877989, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Frederick Ludwig's specialty?
- Frederick Ludwig is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Frederick Ludwig located?
- Frederick Ludwig's practice location on file with NPPES is 550 Osborn Blvd, Sault Sainte Marie, MI 49783-1899.
- What is Frederick Ludwig's phone number?
- The practice phone number listed in the NPPES registry for Frederick Ludwig is (906) 632-3753.
- Does Frederick Ludwig accept Medicare?
- Frederick Ludwig is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Frederick Ludwig's NPI active?
- Yes — Frederick Ludwig's NPI (1992877989) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.