MARTHA KARETNY MD
NPI 1306806419
Internal Medicine in Brooklyn, NY
About Martha Karetny Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARTHA KARETNY MD (NPI 1306806419) is an individual internal medicine provider in Brooklyn, New York, licensed in New York (204060) and active in the NPI registry since March 2006. She is enrolled in Medicare PECOS and is a graduate of Other (1985).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 4
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
Martha Karetny 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 Reassignment
Medicare enrollment records show Martha Karetny reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Brooklyn, NY 11223
- Reassigned Medicare billing, New York enrollment
- 2 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 8
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 11223 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 4
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BROOKLYN, NY 11223
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 Martha Karetny's NPI number?
The NPI number for Martha Karetny is 1306806419. It was assigned to this individual provider in the NPPES registry on March 23, 2006.
Where is Martha Karetny located?
Martha Karetny practices at 726 Avenue Z Suite 2, Brooklyn, NY 11223. The listed phone number is (718) 872-7373.
What is Martha Karetny's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Martha Karetny enrolled in Medicare?
Yes. Martha Karetny 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 organization bills Medicare for Martha Karetny's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Martha Karetny reassigns Medicare benefits to Hope And Health Medical Care PC (Brooklyn, NY). The 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 Martha Karetny'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 Martha Karetny was last updated on August 21, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Martha Karetny, MD · NPI 1306806419
Internal Medicine physician in Brooklyn, New York. Individual provider, active in the CMS NPPES registry since March 23, 2006.
## Identity
- **NPI:** 1306806419 (Entity type: Individual)
- **Enumerated:** March 23, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 204060 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 726 AVENUE Z, SUITE 2, Brooklyn, NY 11223-6322
- **Phone:** (718) 872-7373 · **Fax:** (718) 872-6772
## 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:** Hope And Health Medical Care PC (NPI 1467405969, Brooklyn, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1985
## Record status
- **NPPES last updated:** August 21, 2008
- **Other identifiers:** Medicaid 01694715 (NY); Medicare ID-Type Unspecified 18N16-1 (NY); Medicare UPIN G41141 (NY); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1306806419) · Data from the CMS NPPES public registry.