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John Siegner, D.O.
NPI 1588741045 · General Practice Physician · Caro, MI
John Siegner, D.O. is a General Practice Physician provider in Caro, MI (NPI 1588741045).
Provider details
- NPI number
- 1588741045
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 5101005281 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
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
220 E Frank St
Caro, MI 48723-1635
Phone: (989) 673-4126
Fax: (989) 673-4502
Street-level locationGet directions
Mailing address
220 E Frank St
Caro, MI 48723-1635
Registry dates
- Enumerated
- 2006-11-01
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Siegner's NPI number?
- John Siegner's National Provider Identifier (NPI) is 1588741045, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Siegner's specialty?
- John Siegner is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is John Siegner located?
- John Siegner's practice location on file with NPPES is 220 E Frank St, Caro, MI 48723-1635.
- What is John Siegner's phone number?
- The practice phone number listed in the NPPES registry for John Siegner is (989) 673-4126.
- Is John Siegner's NPI active?
- Yes — John Siegner's NPI (1588741045) 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.