Physician Profile
Unclaimed ProfileAbout DREFFER
Douglas R Dreffer, M.D. practices family practice in Derry, NH. Douglas is a 1997 graduate of Ohio State University College of Medicine. Douglas is also listed as specializing in family medicine. According to Medicare claims data, Douglas cared for 1,779 Medicare patients across 2,318 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (603) 537-1300
- Email not available
Practice Locations
6 TSIENNETO RD STE 100
Derry, NH 03038
Procedures Most Often Billed to Medicare
2,318 services · 1,779 patients · 25 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Screening mammography | Imaging | 77067 |
39 |
| Screening 3d breast mammography | Imaging | 77063 |
39 |
| X-ray of chest, 2 views | Imaging | 71046 |
20 |
| Dxa bone density measurement of hip, pelvis, spine | Imaging | 77080 |
16 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
61 |
| Influenza vaccine split virus, preservative free | Treatment | 90662 |
49 |
| Sarscv2 vac 30mcg trs-suc im | Treatment | 91320 |
20 |
| Admn sarscov2 vacc 1 dose | Treatment | 90480 |
20 |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | Treatment | 93306 |
16 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
704 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other family practices at this location 4
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other family practices in Derry 5
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Ohio State University College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1997 at Ohio State University College of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Screening mammography 8
Providers in NH who bill this service to Medicare most often.
Common questions
What does Dr. Dreffer specialize in?
Dr. Dreffer is a family practice in Derry, NH. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “FAMILY PRACTICE”.
NPI registry
Where is Dr. Dreffer located?
Dr. Dreffer is listed at 6 TSIENNETO RD STE 100, Derry, NH 03038. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Dreffer's phone number?
The number on file is (603) 537-1300. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Dreffer's NPI number?
Dr. Dreffer's National Provider Identifier is 1316940802. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Dreffer go to medical school?
Dr. Dreffer attended Ohio State University College of Medicine, graduating in 1997. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Dreffer been practicing?
Dr. Dreffer has 29 years experience. Calculated from a graduation year of 1997, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Dreffer do most often?
According to Medicare billing data, Dr. Dreffer performs imaging including screening mammography and screening 3d breast mammography; provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report and influenza vaccine split virus, preservative free, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Dreffer confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Dreffer. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.