Ryan Zantow, MD
NPI 1821044892 · Occupational Medicine Physician · Oshkosh, WI
Enrolled with Medicare as Practitioner - Physical Medicine and Rehabilitation · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ryan Zantow, MD is a Occupational Medicine Physician provider in Oshkosh, WI (NPI 1821044892).
Provider details
- NPI number
- 1821044892
- Entity type
- Individual
- Primary specialty
- Occupational Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 44776-020 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
3 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 (2)
- 820 E Grant StAppleton, WI 54911-3483Phone: (920) 831-5050Fax: (920) 738-6400
- 3509 Dewey StManitowoc, WI 54220-5813Phone: (920) 686-5732Fax: (920) 686-5726
Registry dates
- Enumerated
- 2006-05-25
- Last updated
- 2026-03-03
- Certified
- 2026-03-03
Frequently asked questions
- What is Ryan Zantow's NPI number?
- Ryan Zantow's National Provider Identifier (NPI) is 1821044892, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ryan Zantow's specialty?
- Ryan Zantow is listed in the NPPES registry with a primary specialty of Occupational Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ryan Zantow located?
- Ryan Zantow's practice location on file with NPPES is 855 N Westhaven Dr, Oshkosh, WI 54904-7668.
- What is Ryan Zantow's phone number?
- The practice phone number listed in the NPPES registry for Ryan Zantow is (833) 986-2170.
- Does Ryan Zantow accept Medicare?
- Ryan Zantow is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ryan Zantow's NPI active?
- Yes — Ryan Zantow's NPI (1821044892) is active in the NPPES registry as of the last update on 2026-03-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.