DR. DOUGLAS R DREFFER M.D.
NPI 1316940802
Family Medicine in Derry, NH
About Dr. Douglas R Dreffer M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. DOUGLAS R DREFFER M.D. (NPI 1316940802) is an individual family medicine provider in Derry, New Hampshire, licensed in New Hampshire (10861) and active in the NPI registry since May 2005. He is enrolled in Medicare PECOS, is affiliated with Concord Hospital, and is a graduate of Ohio State University College Of Medicine (1997).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 13
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. Douglas R Dreffer 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 Douglas Dreffer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Derry, NH 03038
- Reassigned Medicare billing, New Hampshire enrollment
- 80 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 26
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Concord Hospital
Acute Care Hospitals · Concord, NHElliot Hospital
Acute Care Hospitals · Manchester, NHCatholic Medical Center
Acute Care Hospitals · Manchester, NHPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 03038 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 8
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 17
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
DERRY, NH 03038
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 Douglas Dreffer's NPI number?
The NPI number for Douglas Dreffer is 1316940802. It was assigned to this individual provider in the NPPES registry on May 27, 2005.
Where is Douglas Dreffer located?
Douglas Dreffer practices at 6 Tsienneto Rd Ste 100, Derry, NH 03038. The listed phone number is (603) 537-1300.
What is Douglas Dreffer's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Douglas Dreffer enrolled in Medicare?
Yes. Douglas Dreffer 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 Douglas Dreffer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Douglas Dreffer reassigns Medicare benefits to Derry Medical Center, PA (Derry, NH). 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 Douglas Dreffer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Douglas Dreffer accept?
Health plans from Ambetter from NH Healthy Families, Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care and Taro Health list Douglas Dreffer 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 Douglas Dreffer affiliated with any hospitals?
According to CMS data, Douglas Dreffer is affiliated with Concord Hospital, Elliot Hospital and Catholic Medical Center.
When was this NPI record last updated?
The NPPES record for Douglas Dreffer was last updated on August 8, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.