Marta Onyskiv, M.D.
Family Medicine Physician · Boston, MA
Marta Onyskiv, M.D. is a family medicine physician with a practice address in Boston, Massachusetts, and NPI 1619081510, issued on Aug 18, 2006. Check the license (Massachusetts 226897, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Marta Onyskiv
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 226897 MA
Self-reported in NPPES; status is on the state search - Practice location
- 800 Washington Street, Boston, MA 02111
- Phone
- (617) 636-5000
- Enumerated
- Aug 18, 2006
- Record last updated
- Sep 4, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicaid ID
- 110074033A MA
- Medicare enrollment
- Enrolled (PECOS I20060908000146); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,265 in Massachusetts → Look up another NPI →
Also registered at 800 Washington Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Marta Onyskiv in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 226897Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average family medicine physician in 2024
7,563 Medicare Part D claims for 678 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 69 claims were for opioids.
Most prescribed
- Atorvastatin Calcium605 claims
- Lisinopril362 claims
- Omeprazole339 claims
- Levothyroxine Sodium292 claims
- Amlodipine Besylate277 claims
- Metoprolol Succinate212 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: $108.70
5 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 55,478 providers of this specialty with any payment received $902.55 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 2 group practices
- Revere Medical OF Massachusetts PCMiddleboro, MA
- Steward Medical Group IncNorwood, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marta Onyskiv among 2,265 family medicine physician records in Massachusetts
Marta Onyskiv, M.D. is one of 2,265 family medicine physician records with a practice address in Massachusetts. 80% 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 14% of them.
- NPI issued2006 · 14% of these records are older, 55% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1989 · median 2006 among the 1,529 with a school on file
- Record last updated2013 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Family Medicine Physician providers in Massachusetts
There are 2,265 family medicine physician records in Massachusetts.
All 2,265 in Massachusetts → Every provider in Boston → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Xiangxin Chen, M.D.Boston, MA 021111023279379
- Richard Glickman-Simon, M.D.Boston, MA 021111598955692
- Kevin Hui, M.D.Boston, MA 021111619303153
- Julia Murphy, M.D.Boston, MA 021111699712653
- Wei Wang, M.D.Boston, MA 021111447415948
- Nicole Badie, M.D.Boston, MA 021091215188149
- Spencer Blackman, MDBoston, MA 021091205914884
- Marcelo Campos, MDBoston, MA 021091790770121
Common questions
What is Marta Onyskiv, M.D.'s NPI number?
Marta Onyskiv, M.D.'s National Provider Identifier (NPI) is 1619081510, issued on Aug 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marta Onyskiv, M.D. located?
The NPPES record lists a practice address at 800 Washington Street, Boston, MA, 02111. Phone: (617) 636-5000. Providers update this record themselves, so call before visiting.
How can I verify Marta Onyskiv, M.D.'s license?
NPPES lists Massachusetts license number 226897, 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 Marta Onyskiv, M.D. prescribe under Medicare Part D?
In 2024, Marta Onyskiv, M.D. had 7,563 Medicare Part D claims for 678 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.