Ole-Petter Riksfjord Hamnvik, M.D.
Endocrinology, Diabetes & Metabolism Physician · Boston, MA
Ole-Petter Riksfjord Hamnvik, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Boston, Massachusetts, and NPI 1063603678, issued on Aug 8, 2007. Check the license (Massachusetts 239696, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Ole-Petter Riksfjord Hamnvik
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- 239696 MA
Self-reported in NPPES; status is on the state search - Practice location
- 55 Fruit St, Boston, MA 02114
- Phone
- (617) 724-3782
- Enumerated
- Aug 8, 2007
- Record last updated
- Apr 2, 2026
- Medicare enrollment
- Enrolled (PECOS I20120719000449); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 522 in Massachusetts → Look up another NPI →
Also registered at 55 Fruit St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ole-Petter Riksfjord Hamnvik in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 239696Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
687 Medicare Part D claims for 105 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 35% of claims.
Most prescribed
- Levothyroxine Sodium119 claims
- Metformin Hcl49 claims
- Ozempic49 claims
- Atorvastatin Calcium46 claims
- Jardiance38 claims
- Hydrocortisone32 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: $250.00
1 payment: consulting fee; the largest payer was Merck Sharp & Dohme LLC. The 5,661 providers of this specialty with any payment received $5,742.15 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.
Bills Medicare through one group practice
- Brigham And Womens Physicians Organization IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ole-Petter Riksfjord Hamnvik among 522 endocrinology, diabetes & metabolism physician records in Massachusetts
Ole-Petter Riksfjord Hamnvik, M.D. is one of 522 endocrinology, diabetes & metabolism physician records with a practice address in Massachusetts. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 48% of them.
- NPI issued2007 · 48% of these records are older, 40% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2005 · median 2002 among the 378 with a school on file
- Record last updated2026 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Massachusetts
There are 522 endocrinology, diabetes & metabolism physician records in Massachusetts.
All 522 in Massachusetts → Every provider in Boston → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Joseph Avruch, MDBoston, MA 021141851381941
- Giuseppe Barbesino, MDBoston, MA 021141366432635
- Enrico Cagliero, MDBoston, MA 021141700877347
- William Crowley, MDBoston, MA 021141417947599
- Marie Demay, MDBoston, MA 021141528058153
- Steven Grinspoon, MDBoston, MA 021141457342099
- Janet Hall, MDBoston, MA 021141548251002
- Anne Klibanski, MDBoston, MA 021141518958164
Common questions
What is Ole-Petter Riksfjord Hamnvik, M.D.'s NPI number?
Ole-Petter Riksfjord Hamnvik, M.D.'s National Provider Identifier (NPI) is 1063603678, issued on Aug 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ole-Petter Riksfjord Hamnvik, M.D. located?
The NPPES record lists a practice address at 55 Fruit St, Boston, MA, 02114. Phone: (617) 724-3782. Providers update this record themselves, so call before visiting.
How can I verify Ole-Petter Riksfjord Hamnvik, M.D.'s license?
NPPES lists Massachusetts license number 239696, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ole-Petter Riksfjord Hamnvik, M.D. prescribe under Medicare Part D?
In 2024, Ole-Petter Riksfjord Hamnvik, M.D. had 687 Medicare Part D claims for 105 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.