Henry L. Sonneborn, MD
Hematology & Oncology Physician · Dover, NH
Henry L. Sonneborn, MD is a hematology & oncology physician with a practice address in Dover, New Hampshire, and NPI 1376508812, issued on Apr 18, 2006. Check the license (New Hampshire 6086, as entered in NPPES) on the New Hampshire Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Henry L. Sonneborn
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 6086 NH
Self-reported in NPPES; status is on the state search - Practice location
- 789 Central Ave, Dover, NH 03820
- Phone
- (603) 742-8787
- Enumerated
- Apr 18, 2006
- Record last updated
- Feb 25, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (603) 740-2446
- Medicaid IDs
- 1376508812 ME
3076000 NH - Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 76 in New Hampshire → Look up another NPI →
Also registered at 789 Central Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ali Al-Alwan, MDPulmonary Disease Physician1235320318
- Belinda Alcaraz, CRNACertified Registered Nurse Anesthetist1144207598
- Danielle Amero, OTD, OTR/L, CHTOccupational Therapist1184239493
- Cathleen Ammann, MDHospitalist Physician1821179540
- Patricia Auty, MDSurgery Physician1407073794
- Glenn Bacon, DOAnesthesiology Physician1780662262
Verify Henry L. Sonneborn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Hampshire Board of Medicine
Search for license 6086Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
151 Medicare Part D claims for 48 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 39% of claims.
Most prescribed
- Abiraterone Acetate18 claims
- Prednisone16 claims
- Eliquis12 claims
- Hydroxyurea11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $21.31
1 payment: education; the largest payer was E.R. Squibb & Sons, L.L.C. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Henry L. Sonneborn among 76 hematology & oncology physician records in New Hampshire
Henry L. Sonneborn, MD is one of 76 hematology & oncology physician records with a practice address in New Hampshire. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 45% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileNo · 70% of these records are
- Record last updated2014 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a New Hampshire practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in New Hampshire
There are 76 hematology & oncology physician records in New Hampshire.
All 76 in New Hampshire → Every provider in Dover → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Amy Bessnow, MDDover, NH 038201083766786
- Archana Bhargava, MDDover, NH 038201366457004
- Prashant Shankar, MDDover, NH 038201164453395
- Wilhelmina Cabalona, MDPortsmouth, NH 038011265691927
- Yoko Fukuda, M.D.Portsmouth, NH 038011568622801
- Elena Theodosiou, MDPortsmouth, NH 038011891730982
- Christine Wasilewski, MDPortsmouth, NH 038011376750562
- Daniel Lieber, M.D.North Conway, NH 038601356454623
Common questions
What is Henry L. Sonneborn, MD's NPI number?
Henry L. Sonneborn, MD's National Provider Identifier (NPI) is 1376508812, issued on Apr 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Henry L. Sonneborn, MD located?
The NPPES record lists a practice address at 789 Central Ave, Dover, NH, 03820. Phone: (603) 742-8787. Providers update this record themselves, so call before visiting.
How can I verify Henry L. Sonneborn, MD's license?
NPPES lists New Hampshire license number 6086, as entered by the provider. Search the New Hampshire Board of Medicine at https://www.oplc.nh.gov/board-medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Henry L. Sonneborn, MD prescribe under Medicare Part D?
In 2024, Henry L. Sonneborn, MD had 151 Medicare Part D claims for 48 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.