Mark L. Su, M.D.
Family Medicine Physician · Newburyport, MA
Mark L. Su, M.D. is a family medicine physician with a practice address in Newburyport, Massachusetts, and NPI 1609871946, issued on Jun 14, 2005. Check the license (Massachusetts 216973, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Mark L. Su
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 216973 MA
Self-reported in NPPES; status is on the state search - Practice location
- 255 Low St Ste 202, Newburyport, MA 01950
- Phone
- (978) 225-0378
- Enumerated
- Jun 14, 2005
- Record last updated
- Oct 11, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicaid ID
- 2011450 MA
- Medicare enrollment
- Enrolled (PECOS I20061018000105); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 2000
- 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 255 Low St Ste 202
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Katelyn KennyRegistered Nurse1740800838
Verify Mark L. Su in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 216973Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% fewer Medicare Part D claims than the average family medicine physician in 2024
1,893 Medicare Part D claims for 100 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. 119 claims were for opioids.
Most prescribed
- Levothyroxine Sodium76 claims
- Oxycodone Hcl72 claims
- Fluconazole59 claims
- Gabapentin59 claims
- Clonazepam48 claims
- Dextroamphetamine-Amphetamine38 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: $1,459.85
2 payments; by number, the most common kind was consulting fee; the largest payer was Alnylam Pharmaceuticals 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.
Mark L. Su among 2,265 family medicine physician records in Massachusetts
Mark L. Su, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 86% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2000 · median 2006 among the 1,529 with a school on file
- Record last updated2019 · 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).
9 family medicine physician records list a practice address in Newburyport
They are 9 of the 558 NPPES records with a practice address in Newburyport, and 2,265 family medicine physician records in Massachusetts.
All 2,265 in Massachusetts → Every provider in Newburyport → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Kevin Lanphear, D.O.Newburyport, MA 019501992872626
- Michael Levitz, D.O.Newburyport, MA 019501417498379
- Judiann McGhee, M.D.Newburyport, MA 019501902801780
- Alon Sitzer, M.DNewburyport, MA 019501801115860
- Kirubakaran Siva, DONewburyport, MA 019501649657594
- Aaron Thomas, D.O.Newburyport, MA 019501902997885
- Richard Traister, M.D.Newburyport, MA 019501023018298
- Paul Turnquist, M.D.Newburyport, MA 019501013917376
Common questions
What is Mark L. Su, M.D.'s NPI number?
Mark L. Su, M.D.'s National Provider Identifier (NPI) is 1609871946, issued on Jun 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark L. Su, M.D. located?
The NPPES record lists a practice address at 255 Low St Ste 202, Newburyport, MA, 01950. Phone: (978) 225-0378. Providers update this record themselves, so call before visiting.
How can I verify Mark L. Su, M.D.'s license?
NPPES lists Massachusetts license number 216973, 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 Mark L. Su, M.D. prescribe under Medicare Part D?
In 2024, Mark L. Su, M.D. had 1,893 Medicare Part D claims for 100 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.