Thomas Andrew Zarka, M.D.
Obstetrics & Gynecology Physician · Derry, NH
Thomas Andrew Zarka, M.D. is an obstetrics & gynecology physician with a practice address in Derry, New Hampshire, and NPI 1972587913, issued on Dec 2, 2005. Check the license (New Hampshire 12251, as entered in NPPES) on the New Hampshire Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Thomas Andrew Zarka
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 12251 NH
Self-reported in NPPES; status is on the state search - Practice location
- 44 Birch St, Derry, NH 03038
- Phone
- (603) 421-2526
- Enumerated
- Dec 2, 2005
- Record last updated
- Jan 18, 2022
- Fax
- (603) 421-2568
- Medicaid ID
- 3080793 NH
- Medicare enrollment
- Enrolled (PECOS I20040426001009); accepts Medicare assignment
- Medical or professional school
- St. Louis College Of Physicians And Surgeons, 1997
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 240 in New Hampshire → Look up another NPI →
Also registered at 44 Birch St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Thomas Antisdel, MDObstetrics & Gynecology Physician1396701769
- Alphonse Baluta, MDInternal Medicine Physician1437116225
- Corinne Chaar, RD CDEMetabolic Nutrition Registered Dietitian1215267711
- Edward Chibaro, M.D.Urology Physician1861451239
- Sandra Cullinan, CCC-SLPSpeech-Language Pathologist1346421260
- Candace Delisio, CNMMidwife1720017619
Verify Thomas Andrew Zarka in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Hampshire Board of Medicine
Search for license 12251Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
159 Medicare Part D claims for 46 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. 14 claims were for opioids.
Most prescribed
- Medroxyprogesterone Acetate22 claims
- Estradiol (Once Weekly)14 claims
- Estradiol13 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.
Bills Medicare through one group practice
- Parkland Physician Services IncDerry, NH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas Andrew Zarka among 240 obstetrics & gynecology physician records in New Hampshire
Thomas Andrew Zarka, M.D. is one of 240 obstetrics & gynecology physician records with a practice address in New Hampshire. 74% 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, 83% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1997 · median 2006 among the 157 with a school on file
- Record last updated2022 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a New Hampshire practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in New Hampshire
There are 240 obstetrics & gynecology physician records in New Hampshire.
All 240 in New Hampshire → Every provider in Derry → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Thomas Antisdel, MDDerry, NH 030381396701769
- Marianne Fleischman, M.D.Goffstown, NH 030451245603596
- Babs Levenstein, MDLondonberry, NH 030531649264375
- Peggy Bleezarde, M.D.Merrimack, NH 030541639391899
- Karin Commeret, MDMerrimack, NH 030541790911360
- Bettina Costello, MDMerrimack, NH 030541639163785
- Jack Faraci, M.D.Merrimack, NH 030541063498111
- Jeffrey Nathan, M.D.Merrimack, NH 030541760468813
Common questions
What is Thomas Andrew Zarka, M.D.'s NPI number?
Thomas Andrew Zarka, M.D.'s National Provider Identifier (NPI) is 1972587913, issued on Dec 2, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Andrew Zarka, M.D. located?
The NPPES record lists a practice address at 44 Birch St, Derry, NH, 03038. Phone: (603) 421-2526. Providers update this record themselves, so call before visiting.
How can I verify Thomas Andrew Zarka, M.D.'s license?
NPPES lists New Hampshire license number 12251, 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.
How much does Thomas Andrew Zarka, M.D. prescribe under Medicare Part D?
In 2024, Thomas Andrew Zarka, M.D. had 159 Medicare Part D claims for 46 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.