WALTER J CHWALS MD
NPI 1497771141
Surgery - Pediatric Surgery in Boston, MA
About Walter J Chwals Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WALTER J CHWALS MD (NPI 1497771141) is an individual pediatric surgery provider in Boston, Massachusetts, licensed in Massachusetts (54706) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1980).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 12
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
Walter J Chwals 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 Walter Chwals reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Boston, MA 02111
- Reassigned Medicare billing, Massachusetts enrollment
- 202 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.
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.
BOSTON, MA 02111
BOSTON, MA 02111
BOSTON, MA 02111
BOSTON, MA 02111
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 Walter Chwals's NPI number?
The NPI number for Walter Chwals is 1497771141. It was assigned to this individual provider in the NPPES registry on July 14, 2006.
Where is Walter Chwals located?
Walter Chwals practices at 800 Washington St, Boston, MA 02111. The listed phone number is (617) 636-5000.
What is Walter Chwals's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Pediatric Surgery, with taxonomy code 2086S0120X.
Is Walter Chwals enrolled in Medicare?
Yes. Walter Chwals 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 Walter Chwals's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Walter Chwals reassigns Medicare benefits to Pratt 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 Walter Chwals's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Walter Chwals accept?
Health plans from Anthem Blue Cross and Blue Shield, Taro Health and WellSense Health Plan list Walter Chwals 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.
When was this NPI record last updated?
The NPPES record for Walter Chwals was last updated on January 29, 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.
# Walter J Chwals, MD · NPI 1497771141
Pediatric Surgery physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since July 14, 2006.
## Identity
- **NPI:** 1497771141 (Entity type: Individual)
- **Enumerated:** July 14, 2006
- **Primary specialty:** Surgery - Pediatric Surgery · taxonomy 2086S0120X
- **State license:** 54706 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 800 WASHINGTON ST, Boston, MA 02111-1552
- **Phone:** (617) 636-5000
## 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:** Pratt Pediatric Associates Inc (NPI 1477590511, Boston, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1980
## Record status
- **NPPES last updated:** January 29, 2014
- **Other identifiers:** Other 1012234150001 (PA); Other 2319539 (OH); Other 5904683; and 9 more
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Source: [NPI Profile](https://npiprofile.com/npi/1497771141) · Data from the CMS NPPES public registry.