DR. DAVID LAWRENCE MASLAK MD
NPI 1477916179
Internal Medicine in Derby, CT
About Dr. David Lawrence Maslak Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. DAVID LAWRENCE MASLAK MD (NPI 1477916179) is an individual internal medicine provider in Derby, Connecticut, licensed in Connecticut (62720) and active in the NPI registry since March 2016. He is enrolled in Medicare PECOS, is affiliated with Putnam Hospital Center, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
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. David Lawrence Maslak 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
14Medicare enrollment records show David Maslak reassigns Medicare billing to 14 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Derby, CT 06418
- Reassigned Medicare billing, Connecticut enrollment
- 190 clinicians in this Medicare group
Danbury, CT 06810
- Reassigned Medicare billing, Connecticut enrollment
- 818 clinicians in this Medicare group
Meriden, CT 06451
- Reassigned Medicare billing, Connecticut enrollment
- 505 clinicians in this Medicare group
Port Jefferson, NY 11777
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Port Emergency Medical Services PC
- 90 clinicians in this Medicare group
New Britain, CT 06052
- Reassigned Medicare billing, Connecticut enrollment
- 745 clinicians in this Medicare group
Middletown, CT 06457
- Reassigned Medicare billing, Connecticut enrollment
- 178 clinicians in this Medicare group
Torrington, CT 06790
- Reassigned Medicare billing, Connecticut enrollment
- 374 clinicians in this Medicare group
Hartford, CT 06106
- Reassigned Medicare billing, Connecticut enrollment
- 1,921 clinicians in this Medicare group
Manchester, CT 06040
- Reassigned Medicare billing, Connecticut enrollment
- 130 clinicians in this Medicare group
Poughkeepsie, NY 12601
- Reassigned Medicare billing, New York enrollment
- 638 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 7
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.
Putnam Hospital Center
Acute Care Hospitals · Carmel, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 06418 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
DERBY, CT 06418
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 David Maslak's NPI number?
The NPI number for David Maslak is 1477916179. It was assigned to this individual provider in the NPPES registry on March 30, 2016.
Where is David Maslak located?
David Maslak practices at 130 Division St, Derby, CT 06418. The listed phone number is (203) 732-1330.
What is David Maslak's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is David Maslak enrolled in Medicare?
Yes. David Maslak 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 David Maslak's services?
According to the CMS Revalidation Reassignment List (October 2026 release), David Maslak reassigns Medicare benefits to 14 organizations: Griffin Faculty Physicians, Inc. (Derby, CT), Nuvance Health Medical Practice Ct, Inc. (Danbury, CT), Midstate Medical Center (Meriden, CT), Port Emergency Medical Services, P.C. (Port Jefferson, NY), The Hospital Of Central Connecticut At New Britain General And Bradley (New Britain, CT) and 9 more organizations, listed in the Medicare section above. 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 David Maslak's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does David Maslak accept?
Health plans from Anthem Blue Cross and Blue Shield list David Maslak 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 David Maslak affiliated with any hospitals?
According to CMS data, David Maslak is affiliated with Putnam Hospital Center.
When was this NPI record last updated?
The NPPES record for David Maslak was last updated on November 27, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 months 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. David Lawrence Maslak, MD · NPI 1477916179
Internal Medicine physician in Derby, Connecticut. Individual provider, active in the CMS NPPES registry since March 30, 2016.
## Identity
- **NPI:** 1477916179 (Entity type: Individual)
- **Enumerated:** March 30, 2016
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 62720 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 130 DIVISION ST, Derby, CT 06418-1326
- **Phone:** (203) 732-1330 · **Fax:** (203) 732-1332
## 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:** 14 organizations under Medicare reassignment (form CMS-855R): Griffin Faculty Physicians, Inc. (NPI 1598755605, Derby, CT); Nuvance Health Medical Practice Ct, Inc. (NPI 1407898117, Danbury, CT); Midstate Medical Center (NPI 1154425288, Meriden, CT); Port Emergency Medical Services, P.C. (NPI 1912988395, Port Jefferson, NY); The Hospital Of Central Connecticut At New Britain General And Bradley (NPI 1053477075, New Britain, CT); and 9 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2016
## Record status
- **NPPES last updated:** November 27, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1477916179) · Data from the CMS NPPES public registry.