NPPES file of Aug 9, 2026

Mark Barbour Constantian, M.D.

Plastic Surgery Physician · Nashua, NH

Mark Barbour Constantian, M.D. is a plastic surgery physician with a practice address in Nashua, New Hampshire, and NPI 1184789323, issued on Dec 27, 2006. Check the license (New Hampshire 5913, as entered in NPPES) on the New Hampshire Board of Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1184789323
Name
Mark Barbour Constantian
Credential
M.D.
Primary taxonomy
Plastic Surgery Physician 208200000X
License number
5913 NH
Self-reported in NPPES; status is on the state search
Practice location
19 Tyler St, Nashua, NH 03060
Phone
(603) 880-7700
Enumerated
Dec 27, 2006
Record last updated
Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(603) 880-6660
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 19 Tyler St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Vladimir Avramov, M.D.Internal Medicine Physician1821400243
  2. Cheryl Boise, RDHDental Hygienist1609327766
  3. Rebecca Cooper-Piela, ARNPAdult Health Nurse Practitioner1902995848
  4. Debra Couyou, CNMAdvanced Practice Midwife1295776938
  5. Julie Doyle, LCMHCMental Health Counselor1518331636
  6. Karen Flaherty, ARNPWomen's Health Nurse Practitioner1417056581

Verify Mark Barbour Constantian in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNew Hampshire Board of Medicine
    Search for license 5913
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the New Hampshire license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Industry payments in 2024: $50.92

1 payment: food and beverage; the largest payer was Musculoskeletal Transplant Foundation Inc. The 3,683 providers of this specialty with any payment received $5,316.31 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Mark Constantian$50.92
  2. Specialty average$5,316.31

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Mark Barbour Constantian among 24 plastic surgery physician records in New Hampshire

Mark Barbour Constantian, M.D. is one of 24 plastic surgery physician records with a practice address in New Hampshire. 63% 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 17% of them.

  • NPI issued2006 · 17% of these records are older, 29% newer
  • In a Medicare fileYes · 63% of these records are
  • In the CMS Doctors and Clinicians fileNo · 54% of these records are
  • Record last updated2007 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208200000X and a New Hampshire practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Plastic Surgery Physician providers in New Hampshire

There are 24 plastic surgery physician records in New Hampshire.

The 8 plastic surgery physician records with the nearest ZIP codes

  1. Donna Mayo, L.P.N.Nashua, NH 030601376608521
  2. Jeremy Waldman, M.D.Nashua, NH 030621437129665
  3. Jeffrey Abboud, M.D.Salem, NH 030791124857107
  4. John Mallen, MDSalem, NH 030791427037951
  5. Emese Kalnoki-Kis, MDManchester, NH 031011336345362
  6. Adam Vernadakis, M.D.Manchester, NH 031011134188659
  7. Robert Feins, M.D.Manchester, NH 031031689667768
  8. Peter Pacik, M.D.Manchester, NH 031041861621443

Common questions

What is Mark Barbour Constantian, M.D.'s NPI number?

Mark Barbour Constantian, M.D.'s National Provider Identifier (NPI) is 1184789323, issued on Dec 27, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mark Barbour Constantian, M.D. located?

The NPPES record lists a practice address at 19 Tyler St, Nashua, NH, 03060. Phone: (603) 880-7700. Providers update this record themselves, so call before visiting.

How can I verify Mark Barbour Constantian, M.D.'s license?

NPPES lists New Hampshire license number 5913, 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.

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.