JOHN MACK
NPI 1619346004
Social Worker - Clinical in Rochester, MN
About John Mack NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN MACK (NPI 1619346004) is an individual clinical provider in Rochester, Minnesota, licensed in Minnesota (22002) and active in the NPI registry since September 2015. He is enrolled in Medicare PECOS and is a graduate of Other (2012).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
John Mack is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
6Medicare enrollment records show John Mack reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Rochester, MN 55905
- Reassigned Medicare billing, Minnesota enrollment
- 6,534 clinicians in this Medicare group
Lake City, MN 55041
- Reassigned Medicare billing, Minnesota enrollment
- Also billed through NPI 1164463659 (Minnesota)
- 675 clinicians in this Medicare group
Red Wing, MN 55066
- Reassigned Medicare billing, Minnesota enrollment
- Also billed through NPI 1063435410 (Minnesota)
- 1,571 clinicians in this Medicare group
Waseca, MN 56093
- Reassigned Medicare billing, Minnesota enrollment
- Also billed through NPI 1740256668 (Minnesota), NPI 1124035282 (Minnesota)
- 1,572 clinicians in this Medicare group
Fairmont, MN 56031
- Reassigned Medicare billing, Minnesota enrollment
- 806 clinicians in this Medicare group
Saint James, MN 56081
- Reassigned Medicare billing, Minnesota enrollment
- Also billed through NPI 1023177730 (Minnesota)
- 390 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 55905 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ROCHESTER, MN 55905
ROCHESTER, MN 55905
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is John Mack's NPI number?
The NPI number for John Mack is 1619346004. It was assigned to this individual provider in the NPPES registry on September 16, 2015.
Where is John Mack located?
John Mack practices at 200 1st St SW, Rochester, MN 55905. The listed phone number is (507) 284-2511.
What is John Mack's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is John Mack enrolled in Medicare?
Yes. John Mack is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for John Mack's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Mack reassigns Medicare benefits to 6 organizations: Mayo Clinic (Rochester, MN), Mayo Clinic Health System-Lake City (Lake City, MN), Mayo Clinic Health System-Southeast Minnesota Region (Red Wing, MN), Mayo Clinic Health System-Southwest Minnesota Region (Waseca, MN), Mayo Clinic Health System-Fairmont (Fairmont, MN) and 1 more organization, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Mack's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for John Mack was last updated on August 27, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# John Mack · NPI 1619346004
Clinical provider in Rochester, Minnesota. Individual provider, active in the CMS NPPES registry since September 16, 2015.
## Identity
- **NPI:** 1619346004 (Entity type: Individual)
- **Enumerated:** September 16, 2015
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **State license:** 22002 (Minnesota)
- **Sole proprietor:** No
## Practice location
- **Address:** 200 1ST ST SW, Rochester, MN 55905-0001
- **Phone:** (507) 284-2511
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 6 organizations under Medicare reassignment (form CMS-855R): Mayo Clinic (NPI 1114343860, Rochester, MN); Mayo Clinic Health System-Lake City (NPI 1538113022, Lake City, MN); Mayo Clinic Health System-Southeast Minnesota Region (NPI 1114453883, Red Wing, MN); Mayo Clinic Health System-Southwest Minnesota Region (NPI 1518494251, Waseca, MN); Mayo Clinic Health System-Fairmont (NPI 1366410862, Fairmont, MN); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2012
## Record status
- **NPPES last updated:** August 27, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1619346004) · Data from the CMS NPPES public registry.