DR. MELANIE ALTHOLTZ NATHAN MD
NPI 1861655821
Obstetrics & Gynecology - Obstetrics in Danvers, MA
About Dr. Melanie Altholtz Nathan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MELANIE ALTHOLTZ NATHAN MD (NPI 1861655821) is an individual obstetrics provider in Danvers, Massachusetts, licensed in Massachusetts (251702) and active in the NPI registry since July 2008. She is enrolled in Medicare PECOS, is affiliated with North Shore Medical Center -, and is a graduate of Other (2008).
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. Melanie Altholtz Nathan 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
2Medicare enrollment records show Melanie Nathan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Salem, MA 01970
- Reassigned Medicare billing, Massachusetts enrollment
- 994 clinicians in this Medicare group
Lynn, MA 01901
- Reassigned Medicare billing, Massachusetts enrollment
- 178 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 4
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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
North Shore Medical Center -
Acute Care Hospitals · Salem, MAMassachusetts General Hospital
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 01923 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 Melanie Nathan's NPI number?
The NPI number for Melanie Nathan is 1861655821. It was assigned to this individual provider in the NPPES registry on July 9, 2008.
Where is Melanie Nathan located?
Melanie Nathan practices at 1 Hutchinson Dr Ste 1, Danvers, MA 01923. The listed phone number is (978) 739-6950.
What is Melanie Nathan's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Obstetrics, with taxonomy code 207VX0000X.
Is Melanie Nathan enrolled in Medicare?
Yes. Melanie Nathan 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 Melanie Nathan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Melanie Nathan reassigns Medicare benefits to 2 organizations: Mass General Brigham Medical Group Northern Massachusetts Inc (Salem, MA) and Lynn Community Health, Inc. (Lynn, MA). 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 Melanie Nathan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Melanie Nathan affiliated with any hospitals?
According to CMS data, Melanie Nathan is affiliated with North Shore Medical Center - and Massachusetts General Hospital.
When was this NPI record last updated?
The NPPES record for Melanie Nathan was last updated on February 13, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.