John Cierzan, MD
NPI 1609813997 · Internal Medicine Physician · Rochester, MN
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Cierzan, MD is a Internal Medicine Physician provider in Rochester, MN (NPI 1609813997).
Provider details
- NPI number
- 1609813997
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036503 (MN)
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
20 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
- 2006-06-02
- Last updated
- 2017-01-31
Frequently asked questions
- What is John Cierzan's NPI number?
- John Cierzan's National Provider Identifier (NPI) is 1609813997, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Cierzan's specialty?
- John Cierzan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Cierzan located?
- John Cierzan's practice location on file with NPPES is 210 9th St Se, Rochester, MN 55904-6425.
- What is John Cierzan's phone number?
- The practice phone number listed in the NPPES registry for John Cierzan is (507) 288-3443.
- Does John Cierzan accept Medicare?
- John Cierzan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Cierzan's NPI active?
- Yes — John Cierzan's NPI (1609813997) is active in the NPPES registry as of the last update on 2017-01-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.