NIELS RATHLEV MD
NPI 1164494365
Emergency Medicine in Springfield, MA
About Niels Rathlev Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NIELS RATHLEV MD (NPI 1164494365) is an individual emergency medicine provider in Springfield, Massachusetts, licensed in Massachusetts (49782) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS, is affiliated with Baystate Medical Center, and is a graduate of Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University (1980).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
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
Niels Rathlev 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 Niels Rathlev reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Springfield, MA 01199
- Reassigned Medicare billing, Massachusetts enrollment
- 1,537 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Baystate Medical Center
Acute Care Hospitals · Springfield, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 01199 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.
SPRINGFIELD, MA 01199
SPRINGFIELD, MA 01199
SPRINGFIELD, MA 01199
SPRINGFIELD, MA 01199
SPRINGFIELD, MA 01199
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 Niels Rathlev's NPI number?
The NPI number for Niels Rathlev is 1164494365. It was assigned to this individual provider in the NPPES registry on February 2, 2006.
Where is Niels Rathlev located?
Niels Rathlev practices at 759 Chestnut St, Springfield, MA 01199. The listed phone number is (413) 794-3233.
What is Niels Rathlev's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Niels Rathlev enrolled in Medicare?
Yes. Niels Rathlev 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 Niels Rathlev's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Niels Rathlev reassigns Medicare benefits to Baystate Medical Practices, Inc (Springfield, MA). 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 Niels Rathlev's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Niels Rathlev accept?
Health plans from Taro Health list Niels Rathlev as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Niels Rathlev affiliated with any hospitals?
According to CMS data, Niels Rathlev is affiliated with Baystate Medical Center.
When was this NPI record last updated?
The NPPES record for Niels Rathlev was last updated on February 28, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Niels Rathlev, MD · NPI 1164494365
Emergency Medicine physician in Springfield, Massachusetts. Individual provider, active in the CMS NPPES registry since February 2, 2006.
## Identity
- **NPI:** 1164494365 (Entity type: Individual)
- **Enumerated:** February 2, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 49782 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 759 CHESTNUT ST, Springfield, MA 01199-1619
- **Phone:** (413) 794-3233
## 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:** Baystate Medical Practices, Inc (NPI 1548205909, Springfield, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University, class of 1980
## Record status
- **NPPES last updated:** February 28, 2011
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Source: [NPI Profile](https://npiprofile.com/npi/1164494365) · Data from the CMS NPPES public registry.