DR. MICHELLE A BAUM MD
NPI 1104897925
Pediatrics - Pediatric Nephrology in Boston, MA
About Dr. Michelle A Baum Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MICHELLE A BAUM MD (NPI 1104897925) is an individual pediatric nephrology provider in Boston, Massachusetts, licensed in Massachusetts (77307) and active in the NPI registry since January 2006. She is enrolled in Medicare PECOS, is affiliated with Boston Children's Hospital, and is a graduate of Northwestern University Feinberg Medical School (1989).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 3
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
Dr. Michelle A Baum 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 Michelle Baum reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 1,358 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Boston Children's Hospital
Childrens · Boston, MAOther 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 02115
BOSTON, MA 02115
BOSTON, MA 02115
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 Michelle Baum's NPI number?
The NPI number for Michelle Baum is 1104897925. It was assigned to this individual provider in the NPPES registry on January 30, 2006.
Where is Michelle Baum located?
Michelle Baum practices at 300 Longwood Ave, Boston, MA 02115. The listed phone number is (617) 355-6129.
What is Michelle Baum's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Nephrology, with taxonomy code 2080P0210X.
Is Michelle Baum enrolled in Medicare?
Yes. Michelle Baum 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 Michelle Baum's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michelle Baum reassigns Medicare benefits to Children's Hospital Pediatric Associates, Inc (Boston, 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 Michelle Baum's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Michelle Baum accept?
Health plans from Anthem Blue Cross and Blue Shield and Taro Health list Michelle Baum 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 Michelle Baum affiliated with any hospitals?
According to CMS data, Michelle Baum is affiliated with Boston Children's Hospital.
When was this NPI record last updated?
The NPPES record for Michelle Baum was last updated on April 28, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Dr. Michelle A Baum, MD · NPI 1104897925
Pediatric Nephrology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since January 30, 2006.
## Identity
- **NPI:** 1104897925 (Entity type: Individual)
- **Enumerated:** January 30, 2006
- **Primary specialty:** Pediatrics - Pediatric Nephrology · taxonomy 2080P0210X
- **State license:** 77307 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 LONGWOOD AVE, Boston, MA 02115-5724
- **Phone:** (617) 355-6129 · **Fax:** (617) 730-0569
## 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:** Children's Hospital Pediatric Associates, Inc (NPI 1457306664, Boston, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Northwestern University Feinberg Medical School, class of 1989
## Record status
- **NPPES last updated:** April 28, 2014
- **Other identifiers:** Medicare ID-Type Unspecified A21604; Medicare UPIN F35741; Medicaid 3153290 (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1104897925) · Data from the CMS NPPES public registry.