DAN MICHAEL DRZYMALSKI M.D.
NPI 1437448149
Anesthesiology in Boston, MA
About Dan Michael Drzymalski M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DAN MICHAEL DRZYMALSKI M.D. (NPI 1437448149) is an individual anesthesiology provider in Boston, Massachusetts, licensed in Massachusetts (261995) and active in the NPI registry since April 2011. He is enrolled in Medicare PECOS, is affiliated with Tufts Medical Center, and is a graduate of Harvard Medical School (2011).
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
Dan Michael Drzymalski M.d. 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 Dan Drzymalski 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
- 246 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
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.
Tufts Medical Center
Acute Care Hospitals · 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
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 Dan Drzymalski's NPI number?
The NPI number for Dan Drzymalski is 1437448149. It was assigned to this individual provider in the NPPES registry on April 4, 2011.
Where is Dan Drzymalski located?
Dan Drzymalski practices at 75 Francis St, Boston, MA 02115. The listed phone number is (617) 732-8210.
What is Dan Drzymalski's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Dan Drzymalski enrolled in Medicare?
Yes. Dan Drzymalski 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 Dan Drzymalski's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Dan Drzymalski reassigns Medicare benefits to Pratt Anesthesiology 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 Dan Drzymalski's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Dan Drzymalski accept?
Health plans from Taro Health list Dan Drzymalski 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 Dan Drzymalski affiliated with any hospitals?
According to CMS data, Dan Drzymalski is affiliated with Tufts Medical Center.
When was this NPI record last updated?
The NPPES record for Dan Drzymalski was last updated on November 16, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Dan Michael Drzymalski, M.D. · NPI 1437448149
Anesthesiology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since April 4, 2011.
## Identity
- **NPI:** 1437448149 (Entity type: Individual)
- **Enumerated:** April 4, 2011
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 261995 (Massachusetts)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 75 FRANCIS ST, Boston, MA 02115-6110
- **Phone:** (617) 732-8210
## 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 Anesthesiology Associates, Inc (NPI 1326085390, Boston, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Harvard Medical School, class of 2011
## Record status
- **NPPES last updated:** November 16, 2015
---
Source: [NPI Profile](https://npiprofile.com/npi/1437448149) · Data from the CMS NPPES public registry.