DR. MARY CATHRYN EARNHARDT MD
NPI 1164080800
Obstetrics & Gynecology in Branchburg, NJ
About Dr. Mary Cathryn Earnhardt Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARY CATHRYN EARNHARDT MD (NPI 1164080800) is an individual obstetrics & gynecology provider in Branchburg, New Jersey, licensed in New Jersey (25MA13076700) and active in the NPI registry since May 2019. She is enrolled in Medicare PECOS and is a graduate of Other (2019).
NPPES Registry Identity
Specialties & Licenses 2
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
Dr. Mary Cathryn Earnhardt 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 Mary Cathryn Earnhardt reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Brooklyn, NY 11217
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Goncharov Medical PC
- 29 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 08876 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Mary Cathryn Earnhardt's NPI number?
The NPI number for Mary Cathryn Earnhardt is 1164080800. It was assigned to this individual provider in the NPPES registry on May 29, 2019.
Where is Mary Cathryn Earnhardt located?
Mary Cathryn Earnhardt practices at 3322 Us Highway 22 W Ste 1302, Branchburg, NJ 08876. The listed phone number is (908) 526-0700.
What is Mary Cathryn Earnhardt's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Mary Cathryn Earnhardt enrolled in Medicare?
Yes. Mary Cathryn Earnhardt 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 Mary Cathryn Earnhardt's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Cathryn Earnhardt reassigns Medicare benefits to Goncharov Medical, P.C. (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 Mary Cathryn Earnhardt'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 Mary Cathryn Earnhardt was last updated on October 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 days 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.
# Dr. Mary Cathryn Earnhardt, MD · NPI 1164080800
Obstetrics & Gynecology physician in Branchburg, New Jersey. Individual provider, active in the CMS NPPES registry since May 29, 2019.
## Identity
- **NPI:** 1164080800 (Entity type: Individual)
- **Enumerated:** May 29, 2019
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 25MA13076700 (New Jersey)
- **Sole proprietor:** No
## Practice location
- **Address:** 3322 US HIGHWAY 22 W STE 1302, Branchburg, NJ 08876-4409
- **Phone:** (908) 526-0700
## 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:** Goncharov Medical, P.C. (NPI 1831580091, Brooklyn, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2019
## Record status
- **NPPES last updated:** October 13, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1164080800) · Data from the CMS NPPES public registry.