Mark A. Chag, M.D.
Obstetrics & Gynecology Physician · Portsmouth, NH
Mark A. Chag, M.D. is an obstetrics & gynecology physician with a practice address in Portsmouth, New Hampshire, and NPI 1336179878, issued on Jul 3, 2006. Check the license (New Hampshire 6723, as entered in NPPES) on the New Hampshire Board of Medicine; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mark A. Chag
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 6723 NH
Self-reported in NPPES; status is on the state search - Practice location
- Harbour Women's Health, Portsmouth, NH 03801
- Phone
- (603) 431-6011
- Enumerated
- Jul 3, 2006
- Record last updated
- Mar 7, 2023
- Fax
- (603) 431-6227
- Medicaid ID
- 82163118 NH
- Entity
- Type 1 · individual
Also registered at Harbour Women's Health
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joann Demuth, CNMAdvanced Practice Midwife1699718346
- Albert Lantinen, M.D.Obstetrics & Gynecology Physician1679515837
- Catherine McLaughlin-Hills, CNM, MSNAdvanced Practice Midwife1235172958
- Patricia Yauch, ARNPObstetrics & Gynecology Nurse Practitioner1336183557
Verify Mark A. Chag in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Hampshire Board of Medicine
Search for license 6723Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Obstetrics & Gynecology Physician providers in New Hampshire
There are 240 obstetrics & gynecology physician records in New Hampshire. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
Other obstetrics & gynecology physician records in New Hampshire
- Danielle Albushies, M.D.Bedford, NH1730187055
- Fatima Ali, DOLebanon, NH1578128583
- Emily Amarosa, MDPortsmouth, NH1336466564
- Thomas Antisdel, MDDerry, NH1396701769
- Sergio Arambulo, M.D.Bedford, NH1790930444
- Colene Arnold, M.D.Lee, NH1295767580
- Rebecca Banaski, D.O.Dover, NH1952500225
- Mark Banister, MDPlymouth, NH1316955990
- Kristen Bannister, M.D.Bedford, NH1649278961
- Colleen Barber, M.D.Bedford, NH1467487116
Common questions
What is Mark A. Chag, M.D.'s NPI number?
Mark A. Chag, M.D.'s National Provider Identifier (NPI) is 1336179878, issued on Jul 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark A. Chag, M.D. located?
The NPPES record lists a practice address at Harbour Women's Health, Portsmouth, NH, 03801. Phone: (603) 431-6011. Providers update this record themselves, so call before visiting.
How can I verify Mark A. Chag, M.D.'s license?
NPPES lists New Hampshire license number 6723, 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. 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.