JOHANNES R. KRATZ MD
NPI 1619004058
Surgery in Boston, MA
About Johannes R. Kratz Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHANNES R. KRATZ MD (NPI 1619004058) is an individual surgery provider in Boston, Massachusetts, licensed in Massachusetts (L-228641) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS and is a graduate of Harvard Medical School (2006).
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
Johannes R. Kratz Md 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
3Medicare enrollment records show Johannes Kratz reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 2,112 clinicians in this Medicare group
San Francisco, CA 94122
- Reassigned Medicare billing, California enrollment
- 5,544 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 761 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 5
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 02114 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.
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
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 Johannes Kratz's NPI number?
The NPI number for Johannes Kratz is 1619004058. It was assigned to this individual provider in the NPPES registry on February 27, 2007.
Where is Johannes Kratz located?
Johannes Kratz practices at Massachusetts General Hospital 55 Fruit Street, Boston, MA 02114. The listed phone number is (617) 726-2066.
What is Johannes Kratz's specialty?
The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.
Is Johannes Kratz enrolled in Medicare?
Yes. Johannes Kratz 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 Johannes Kratz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Johannes Kratz reassigns Medicare benefits to 3 organizations: Regents Of The University Of California (San Francisco, CA), Ucsf Medical Group Business Services (San Francisco, CA) and Ucsf Dept Of Surgery (San Francisco, CA). 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 Johannes Kratz'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 Johannes Kratz was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Johannes R. Kratz, MD · NPI 1619004058
Surgery physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since February 27, 2007.
## Identity
- **NPI:** 1619004058 (Entity type: Individual)
- **Enumerated:** February 27, 2007
- **Primary specialty:** Surgery · taxonomy 208600000X
- **State license:** L-228641 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** MASSACHUSETTS GENERAL HOSPITAL, 55 FRUIT STREET, Boston, MA 02114
- **Phone:** (617) 726-2066
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Regents Of The University Of California (NPI 1235322348, San Francisco, CA); Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA); Ucsf Dept Of Surgery (NPI 1477627537, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Harvard Medical School, class of 2006
## Record status
- **NPPES last updated:** July 8, 2007
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Source: [NPI Profile](https://npiprofile.com/npi/1619004058) · Data from the CMS NPPES public registry.